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A State the branch of Biology that would be used in solving the problem of disputed parentage. 1mk b Study the diagram below and answer questions that follow i What is the name given to the apparatus shown above 1mk ii What is its use in Biological studies? 1mks 2. The diagram below shows onion cells in a field of view of a light microscope X400 Using the dark line as diameter of field of view, determine the actual diameter of one cell 3mks 3. Identify the functions of a light microscope as shown by the following diagrams 2mks a Function: . B Function 4. Name the main product of the dark stage of photosynthesis. L mark 5. State the function of muscles found in the alimentary canal of mammals. 1mks 6. A What is the function of Sodium hydrogen Carbonate that is added to test solution of non reducing sugars. 1 mark b The equation below represents a process X which is controlled by enzymes. I Name the process X and enzyme R. 2 marks Process X Biology paper 1, 2 3 www.freekcsepastpapers.com Enzyme R 7. Give two forms in which carbon IV oxide is transported in human blood. 2 marks 8. It was found that during germination of pea seeds 9.3cm3 of carbon IV oxide was produced while 9.1cm3 of oxygen was used up. A Calculate the respiratory quotient RQ of the reaction taking place. 2 marks b Identify the type of food substance being metabolized. 1 mark 9. A new respiratory virus COVID 19 was discovered in December 2019 in china. A Name the main organ affected by the virus lmark b State any two symptoms that suggest one may have the virus 2 marks c State preventive measures being employed to curb spread of COVID 19. 1 marks 10. Nitrogen in the atmosphere cannot be directly utilized by plants. State three natural ways it is made available for plant use. 3 marks 11. |
Nitrogen in the atmosphere cannot be directly utilized by plants. State three natural ways it is made available for plant use. 3 marks 11. The diagram below represents a longitudinal section of a fruit a Name structures labelled P 1 mark b Describe two adaptations of the fruit for its mode of dispersal. I Mode of dispersal 1mark ii Adaptations 2marks . 12. The diagram below shows regions of growth in a root. Study it and answer the questions that follow. A State the function of part K 1 mark b . State two characteristics of the cells found in zone C 2 marks 13. The dark variety of peppered moth is predominantly found in industrial cities while the spackled white variety is predominantly found in rural areas of Europe. I Name the phenomenon illustrated above I mark ii What is the significance of the phenomenon above to the organism. 1 mark 14. The table below shows the effect of wind, still air and stomatal opening on the rate of transpiration of a plant in milligrams of water lost per hour dm2. Study the table and answer the following questions Stomatal opening m 1 2 3 4 5 6 7 Windy 40 63 74 86 94 110 124 Still air 0 6 12 19 23 27 30 a i Compare the rates of transpiration in windy and still air conditions 1mk A B C KBiology paper 1, 2 3 www.freekcsepastpapers.com ii Explain your observation in a i above 2mks b How does stomatal opening affect transpiration rate? 1mark 15. Explain why division Pteridophyta is considered more advanced than division Bryophyta. 3mks 16. Explain why tropical forests do not have undergrowth 2marks . 17. A bone obtained from a mammal is represented by the diagram below. A Name the bone. 1mk b Which bones articulates with the bone shown in the diagram at the notch? 2mks 18. A . Two pieces of leaf petiole were cut as shown in the diagram below then each piece placed in solution of different concentration. I . |
A . Two pieces of leaf petiole were cut as shown in the diagram below then each piece placed in solution of different concentration. I . What physiological process was being investigated in this experiment? 1mark . Ii . Suggest the type of solution piece B was placed. 1mark . Iii . Explain the appearance of piece A after 15minutes. 2marks . B Explain the effect of water logging on the rate of mineral absorption. 2marks . 19. Study the diagram below and answer the questions that follow; a State the expected result at the end of the experiment 1mk b . Account for your answer in a above 2mks 20. Give two reasons why transportation of carbon IV oxide in a red blood cell is advantageous. 2mks 21. State the change that occurs in arterioles in the human skin during thermoregulation 2mks 22 a Name the fluid that is produced by sebaceous gland 1mk b . State two roles of this fluid 2mks Biology paper 1, 2 3 www.freekcsepastpapers.com 23. The diagram below illustrates the structure of bread moulds ; a Name the part labeled J 1mk b . State the functions of the structure labeled K 2mks 24. What is meant by the term biological control? 1mk 25. The diagram below represents a stage during cell division a i Identify the stage of the cell division 1mark ii . Give three reasons for your answer in a i above 3marks b . Name the structures labeled M 1marks 26. Distinguish between divergent and convergent evolution 2mks 27. State three survival values of tactic response. 3marks . 28. The diagram shows a section through part of the mammalian kidney. A Name the parts labeled 1 and 2. 2mks b State two ways in which nephrons of desert animals differ from those of man. 2mks Biology paper 1, 2 3 www.freekcsepastpapers.com WEITHAGA 231 2 BIOLOGY PAPER 2 Theory July August 2023 SECTION A 40 marks 1. A Define sex linkage. |
2mks b State two ways in which nephrons of desert animals differ from those of man. 2mks Biology paper 1, 2 3 www.freekcsepastpapers.com WEITHAGA 231 2 BIOLOGY PAPER 2 Theory July August 2023 SECTION A 40 marks 1. A Define sex linkage. 1mk b In a marriage of Jane and Otieno who are both normal for hemophiliac condition, gave birth to four children Susan, Grace, Tom and Peter. Tom the second born child was hemophilic. Later in life Tom married Alice who was normal. Their first born child was hemophiliac. Let H represent gene for normal condition. I What was the genotype of Alice. 1mk ii Work out the phenotypic ratio of F2. 4mks c How does the police force use knowledge on genetics. 1mk d What is the name given to points of contact in a pair of homologous chromosomes 1mk 2. The table below shows the approximate distribution of blood groups in a sample of 100 people in a population. Blood group Frequency Rhesus ve Rhesus -ve A 26 22 4 B 20 18 2 AB 4 3 1 O 50 43 8 a Calculate the percentage of Rhesus negative Rh-ve individuals in the population? 1 mk b Account for i The large number of blood group O individuals in a population. 2 mks ii The small number of individuals with blood group AB. 2 mks c The diagram below represents a blood smear on a glass slide. I State the importance of structure C being large numbers in the blood smear. 1mk ii Give a reason why structure C would be found in large numbers in high altitude than in low altitude. 1mk iii Name the process by which structure A would engulf structure B. 1mk A B CBiology paper 1, 2 3 www.freekcsepastpapers.com 3. The graph below represents the population of animals in a pond over a period of 9 months. The pond is situated in a country with evenly distributed rainfall throughout the year. |
1mk A B CBiology paper 1, 2 3 www.freekcsepastpapers.com 3. The graph below represents the population of animals in a pond over a period of 9 months. The pond is situated in a country with evenly distributed rainfall throughout the year. A What times of the year affect the number of the animals adversely 2mks b What is the average number of animals in the pond between April and may 2mks c Give three possible reasons for the drop in the number of animals in the pond 3mks d Give a reason to explain the events in the pond between March and April 1mks 4. A Distinguish between the terms homodont and heterodont 1mk b What is the function of carnassial teeth? 1mk c The diagram below represents the lower jaw of a mammal i Name the mode of nutrition of the mammal whose jaw is shown above 1mk ii State one structural and one functional differences between the teeth labeled J and L 2mks iii a Name the toothless gap labeled K 1mk b State the function of the gap 1mk c Name the substance that is responsible for hardening of teeth 1mk Biology paper 1, 2 3 www.freekcsepastpapers.comBiology paper 1, 2 3 www.freekcsepastpapers.com 5. The diagram below illustrates an experiment to determine the rate of respiration in a small insect. A Name the chemical compound labeled X and state its function. 2 marks Name Function b Why is it necessary to place the flask in a water bath? 1 mark c What changes would you expect to observe in the level of coloured water in the capillary tube after the experiment has run for five minutes? 1 mark d Explain the results stated in part c above. 3 marks e Suggest a control experiment that would be set up for the above experiment. 1 mark SECTION B 40 marks Answer question 6 compulsory and either question 7 or 8 in the spaces provided after question 8 6. |
1 mark d Explain the results stated in part c above. 3 marks e Suggest a control experiment that would be set up for the above experiment. 1 mark SECTION B 40 marks Answer question 6 compulsory and either question 7 or 8 in the spaces provided after question 8 6. A research was carried out to determine the trend of growth for some boys and girls. Their average mass in kilograms was taken separately for a period of 20 years and tabulated as shown in the table below. Age Average Mass of boys kg Average mass of girls kg 0 2.5 2.5 2 11.1 11.5 4 15.0 16.0 6 18.5 19.3 8 22.1 27.1 10 25.1 27.1 12 27.5 30.5 14 37.0 35.5 16 44.0 44.0 18 46.9 52.5 20 48.5 55.0 a On the same axis draw a graph of average mass of girls and of boys against the age. 7 marks b From the graph, determine the; i Mass for boys at age of 11 years. 1mark Biology paper 1, 2 3 www.freekcsepastpapers.com ii Growth rate in girls between ages 13 and 15 3 marks c Account for the change in the mass of girls during the age stated in ii above. 2 marks d Explain the trend observed in the curves for both boys and girls. 2 marks e Why do girls above 10 years require intake of food that is richer in iron than boys of the same age. 1 mark f Mention two other factors apart from the diet that affect the rate of growth in boys and girls. 2 marks g Apart from using average mass to estimate growth in human beings, name two other parameters that can be used. 2 marks 7. A Describe the adaptation of floating water lily leaf to its photosynthetic function. 10mks b Describe the activities that take place in the chloroplast of growing plants. |
2 marks 7. A Describe the adaptation of floating water lily leaf to its photosynthetic function. 10mks b Describe the activities that take place in the chloroplast of growing plants. 10mks 8. A Explain how the various components of blood cells are adapted to perform their functions. 12mks b Discuss the process of double fertilization in flowering plants. 8mks WEITHAGA 231 3 BIOLOGY PAPER 3 PRACTICAL 1. You are provided with five potato cylinders each measuring 5cm long, liquid S1 and S2, Hydrogen Peroxide, dilute Hydrochloric Acid, and test tubes labeled A,B and C. a i Place one cylinder in a beaker containing liquid labeled S1 and another in the liquid labeled S2. Allow to stand for 30 minutes, then remove the cylinders, wipe them dry using blotting paper. Measure each cylinder in centimeters and record their length and texture in the table given below. 4 marks CYLINDER LENGTH IN CM TEXTURE LIQUID S1 LIQUID S2 ii Account for the results obtained in a i above 2marks iii . Using a scalpel cut one of the cylinders into 5 parts each one centimeter long. Put the pieces into test tube A. Crush the other two using mortar and pestle into a paste. Divide the paste into two equal lots. Put one lot into test tube B and the other into test tube C. To each of the test tubes A and B add 2cm3 of hydrogen peroxide and to test tube C add 1 cm3 of dilute Hydrochloric Acid, then 2cm3 of hydrogen peroxide. Record your observation below. 3marks Test tube A Test tube B Test tube C iv Write a word equation for the reaction that occurs in the test tubes 1mark v Account for the rate of reaction in test tube A, B and C. 4 marks Biology paper 1, 2 3 www.freekcsepastpapers.com 2. |
Record your observation below. 3marks Test tube A Test tube B Test tube C iv Write a word equation for the reaction that occurs in the test tubes 1mark v Account for the rate of reaction in test tube A, B and C. 4 marks Biology paper 1, 2 3 www.freekcsepastpapers.com 2. You are provided with plant specimens labeled A, B, C, D, E and F a Using features inorder given below, construct a dichotomous key that can be used to identify the specimens provided 10marks Simple or compound leaves Leaf venation Leaf margin Arrangement of leaves on the stem Pinnate bipinnate or trifoliate nature of leaves b Give two observable differences between stem of specimen labeled E and D 2mks 3. Examine the photographs I and II of seedling specimen shown below and answer the questions that follows; a i Name the parts labelled C and D. 2mks ii Name two hormones that brings about cell division in parts labelled A 2mks b i Name the class to which the specimen belongs. Lmk ii Give two reasons, using observable features to support your answer in b i above 2mks c Give two functions of the structure labeled D. 2mks d Explain how the curvature labeled C is formed 3mks e . Name the type of germination exhibited by the seedlings. Give a reason for your answer. 2mks Type ReasonBiology paper 1, 2 3 www.freekcsepastpapers.com WEITHAGA 231 3 BIOLOGY PAPER 3 PRACTICAL CONFIDENTIAL REQUIREMENTS Each candidate will require the following. 5 Potato cylinders measuring 5cm long and a half cm 0.5 cm wide. Concentrated salt solution in a beaker labeled S2 Distilled water in a beaker labeled S1 10 ml of hydrogen peroxide in a beaker Dilute hydrochloric acid in a beaker 3 test tubes labeled A,B and C. A pair of forceps. A ruler graduated in centimeters cm A test tube rack Filter paper. |
Concentrated salt solution in a beaker labeled S2 Distilled water in a beaker labeled S1 10 ml of hydrogen peroxide in a beaker Dilute hydrochloric acid in a beaker 3 test tubes labeled A,B and C. A pair of forceps. A ruler graduated in centimeters cm A test tube rack Filter paper. 2 blackjack twig with at least two leaves labeled specimen A Accacia wattle tree twig with at least two leaves labeled specimen B Tradescentia Leaf labeled specimen C Lantana Tick berry twig with at least two leaves labeled specimen D Bougainvillea twig with at least two leaves labeled specimen E Jacaranda twig with at least two leaves labeled specimen FBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com CEKENAS END OF TERM TWO EXAM 2023 231 1 BIOLOGY PAPER 1 THEORY 1. State the name given to the study of: 2marks i Chemical changes in living organisms. Ii Insects. 2. State the category of variation into which the following traits fall. 2marks a i Skin pigmentation. Ii Blood group . B Give two possible genotypes of blood group A. 2marks 3. Give two differences between scientific names and common names. 2marks Scientific Names Common Names 4. Explain two adaptation that enable the halophytes to survive in their habitats. 2marks 5. I What is parthenogenesis. 1mark ii Monocotyledonous plants do not undergo secondary growth. Explain, 1mark 6. Name two classes of Phylum Arthropoda whose members head is fused with the thorax. 2marks 7. Name two excretory products produced by both plants and animals. 2marks 8. The shirt of a student was stained by a solution of DCPIP. A friend advised him to wash with lemon juice. Explain. 1mark 9. Two freshly cut banana peels A and B measuring 4cm long were cut, which were later placed in solutions of different concentrations in two separate beakers for 30minutes. The appearance after 30minutes is as shown below. |
1mark 9. Two freshly cut banana peels A and B measuring 4cm long were cut, which were later placed in solutions of different concentrations in two separate beakers for 30minutes. The appearance after 30minutes is as shown below. A What is the nature of the solution in which piece B was placed. 1mark b Account for the appearance of piece A. 3marks 10. I The ovum is fertilized only by one sperm yet there is millions of sperm surrounding the ovum. Explain. 1mark II Give the role of the following parts of the male reproductive system. A Epididymis 1mark b Prostate gland 1mark 11. When a person has oxygen debt the heart beat increases. Give two importance of the increase in heart beat. 2marks . BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 12. The diagram below shows part of a nephron from the human kidney. A Give two factors that lead to creation of higher pressure in the structure labelled Q. 2marks b On the diagram above label the part where the sodium ions are reabsorbed and write down the hormone involve in regulating the level of this ions 2marks Name of the hormone; 13. Explain how the following parts of a light microscope are modified to perform their function i Diaphragm 1mark ii Mirror. 1mark 14. A Explain two adaptations of cell membrane to its function. 2marks b Why is oxyhaemoglobin formation is highly preferred during transportation of oxygen in the body. 2marks 15. I Explain how smoking of tobacco lead to lung cancer. 1mark II. How does age affect the breathing rate in human? 2marks 16. In an experiment to investigate an aspect of digestion, two test tubes A and B were set as shown below. The set up was left for 30 minutes and the temperature of water was maintained at 370C. The resulting content in each test tube A and B were placed into two separate visking tubing which were then placed in a beaker containing iodine solution, for 20 minutes. A What was the observation that was made in the visking tubing containing contents of test tube A. |
The set up was left for 30 minutes and the temperature of water was maintained at 370C. The resulting content in each test tube A and B were placed into two separate visking tubing which were then placed in a beaker containing iodine solution, for 20 minutes. A What was the observation that was made in the visking tubing containing contents of test tube A. 1mark b Account for the result in visking tubing which was containing contents of test tube B. 3marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 17. During a biological excursion a group of form 4 students collected plant specimen whose reproductive organ is shown below. I Name the sub-division of the plant in which the above specimen was obtained. 1mark ii Other than the presence of the above characteristics, state two characteristics of plants in the subdivision named above. 2marks 18. Enzymes are important in various physiological processes in living things. A Differentiate between an enzyme and a hormone 1mark b Name one property of an enzyme exhibited by the lock and key hypothesis 1mark 19. I The transverse section of a young dicotyledous root was cut and iodine solution was applied. One of the part of the section turned to blue-black colour. Identify the part of the root and give a reason for your answer. Part 1mark Reason 1mark II. Distinguish between transpiration and guttation. 1mark 20. The diagram below shows a cell undergoing a stage in cell division. With a reason, identify this stage 2mark Identify Reason . 21. A Define the term immunity. 1mark b Identify one immunizable disease in Kenya 1mark c State two ways in which lymphocytes kill disease causing microorganism. 2marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 22. Study the diagram below and answer the questions that follow. I With an arrow, indicate on the diagram the direction of the impulse through the neuron. 1mark ii State the function of the parts labelled P 1mark 23. Name the type of response exhibited by; i Sperm cell when it swims towards the ovum. |
I With an arrow, indicate on the diagram the direction of the impulse through the neuron. 1mark ii State the function of the parts labelled P 1mark 23. Name the type of response exhibited by; i Sperm cell when it swims towards the ovum. 1mark ii Leaves of Mimosa pudica when they fold their leaves after being touched. 1mark 24. A Distinguish between hypogeal and epigeal germination. 1mark b State two internal factors necessary for germination 2marks 25. A Give two importance of divergent evolution to animals 2marks b Explain two limitations of fossil record as an evidence for evolution 2marks 26. What causes the following diseases? A Diabetes mellitus 1mark b Diabetes inspidus 1mark 27. Study the diagram below and answer the questions that follows. A Identify the tooth. 1mark b Give a reason for your answer in 27 a above 1mark c State two mineral ions deposited on the bones to harden them. 2marks 28. I. The following is food chain that was presented by a student in class. Grasshopper Lizard Chicken Hawk State two errors that are made in the food chain 2marks II. Give a reason why pyramid of biomass is considered to be more accurate over the pyramid of numbers. 1mark 29. Below are cross section of diagrams of fruits. Identify the type of placentation present in the three diagrams 3marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com CEKENAS END OF TERM TWO EXAM 2023 231 2 BIOLOGY PAPER 2 THEORY JULY AUGUST 2023 SECTION A: 40 MARKS 1. The figure below shows the teeth in the lower jaw of an adult human a i Name the teeth labelled X and Z 2marks ii Describe the functions of teeth Y and Z 2marks b Name one mineral and one vitamin that are essential for the healthy development of teeth 1mark c The figure below shows a section through a tooth. I Tooth decay is caused by bacteria getting into the dentine. |
Identify the type of placentation present in the three diagrams 3marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com CEKENAS END OF TERM TWO EXAM 2023 231 2 BIOLOGY PAPER 2 THEORY JULY AUGUST 2023 SECTION A: 40 MARKS 1. The figure below shows the teeth in the lower jaw of an adult human a i Name the teeth labelled X and Z 2marks ii Describe the functions of teeth Y and Z 2marks b Name one mineral and one vitamin that are essential for the healthy development of teeth 1mark c The figure below shows a section through a tooth. I Tooth decay is caused by bacteria getting into the dentine. Explain how bacteria can enter the dentine 2marks ii List one action you could take to reduce the risk of tooth decay 1mark 2. A What are the analogous structure as used in evolution 1mark b How do disease causing micro-organisms become resistant to drugs 3mark c The diagram below represents a bone of a mammalBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com i Identify the bone 1mark ii Name the bone that articulate at the point labelled F 1mark iii Explain two adaptations of the bone identified in i above 2marks 3. Study the flow chart below of a process that takes place in both plants and animals a Name the above process 1mark b i In the above process name the chemical reaction represented by X 1mark ii Name the part of the cell where the enzyme controlled reactions in b i above takes place 1mark c Name the product Z in i Plants 1mark ii Animals 1mark d What would be the fate of pyruvic Acid if oxygen supply is availed in the mitochondria of an animal cell 2marks e What is meant by the term oxygen debt 1mark 4. |
Explain how bacteria can enter the dentine 2marks ii List one action you could take to reduce the risk of tooth decay 1mark 2. A What are the analogous structure as used in evolution 1mark b How do disease causing micro-organisms become resistant to drugs 3mark c The diagram below represents a bone of a mammalBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com i Identify the bone 1mark ii Name the bone that articulate at the point labelled F 1mark iii Explain two adaptations of the bone identified in i above 2marks 3. Study the flow chart below of a process that takes place in both plants and animals a Name the above process 1mark b i In the above process name the chemical reaction represented by X 1mark ii Name the part of the cell where the enzyme controlled reactions in b i above takes place 1mark c Name the product Z in i Plants 1mark ii Animals 1mark d What would be the fate of pyruvic Acid if oxygen supply is availed in the mitochondria of an animal cell 2marks e What is meant by the term oxygen debt 1mark 4. A Differentiate between the following terms i Dominant gene and recessive gene 1mark ii Continuous variation and discontinuous variation 1mark b In Drosophila melanogaster the gene for eye colour is sex linked. The gene for red eye is dominant. A cross was made between homozygous red eyed female and a white eyed male. Work out the phenotypic ration of the F1 generation. Use R to represent the gene for red eyes 4marks c Suggest two reasons to explain why Drosophila melanogaster is most preferred for studies in modern genetics. 2marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 5. |
A Tie one end of the visking tubing tightly using a thread. Put 10ml of solution K and 1 ml of solution M3 into the visking tubing. Tie the other end of the visking tubing. Place the visking tubing in a beaker half filled with iodine solution. Take a second visking tubing and repeat the same using M4. Place the beakers containing the visking tubing in a water bath maintained between 35 38 0C. Allow the setups to stand for 30minutes. Then after 30 minutes remove the visking tubings and test their contents and those of the beakers. SAMPLE 1 K M3 6 MARKS CONTENTS IN TEST OBSERVATION CONCLUSION VISKING TUBING Iodine test Benedict s test Biuret s test BEAKER Iodine test Benedict s test Biuret s test SAMPLE 2 K M4 6MARKS CONTENTS IN TEST OBSERVATION CONCLUSION VISKING TUBING Iodine test Benedict s test Biuret s test BEAKER Iodine test Benedict s test Biuret s test b Account for the results in: i Table 1 1mark ii Table 2 2marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 2. You have been provided with specimen labelled X. The specimen and the photograph of Y are obtained from the same animal. Use them to answer the question that follow. A Giving two reasons identify Y. i Identity 1mark ii Reasons 2marks b Give two adaptations of the specimen labelled X 2marks c State two observable differences between X and Y 2marks d Make a drawing showing the anterior view of X and label all the parts 4marks e The photograph below shows bones from another animalBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com i Which part of the body was H obtained from 1mark ii Identify G2 1mark iii With a reason name the type of joint at the proximal end of specimen H 2marks 3. |
Use them to answer the question that follow. A Giving two reasons identify Y. i Identity 1mark ii Reasons 2marks b Give two adaptations of the specimen labelled X 2marks c State two observable differences between X and Y 2marks d Make a drawing showing the anterior view of X and label all the parts 4marks e The photograph below shows bones from another animalBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com i Which part of the body was H obtained from 1mark ii Identify G2 1mark iii With a reason name the type of joint at the proximal end of specimen H 2marks 3. Study the photographs below and answer the questions that follow a Name the type of relationship in: i Photograph W 1mark ii Photograph M 1mark b Explain your answer in a ii above 2marks c What is the importance of the relationship taking place in the photograph W 1mark d Using observable feature only explain two ways in which the flower is adapted for the activity taking place in photograph M 2marks e . I Give the biological term used to refer to the phenomenon captured in photograph W between organisms A and B towards C 1mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com ii State two implications of the phenomenon mentioned in d i above 2marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com CEKENAS END OF TERM TWO EXAM 2023 231 3 BIOLOGY PAPER 3 PRACTICAL CONFIDENTIAL INSTRUCTIONS These instructions are to enable the head of institution and the teacher in charge of biology to make adequate preparations for 231 3 Biology Practical No one else should have access to this information either directly or indirectly. |
I Identity 1mark ii Reasons 2marks b Give two adaptations of the specimen labelled X 2marks c State two observable differences between X and Y 2marks d Make a drawing showing the anterior view of X and label all the parts 4marks e The photograph below shows bones from another animalBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com i Which part of the body was H obtained from 1mark ii Identify G2 1mark iii With a reason name the type of joint at the proximal end of specimen H 2marks 3. Study the photographs below and answer the questions that follow a Name the type of relationship in: i Photograph W 1mark ii Photograph M 1mark b Explain your answer in a ii above 2marks c What is the importance of the relationship taking place in the photograph W 1mark d Using observable feature only explain two ways in which the flower is adapted for the activity taking place in photograph M 2marks e . I Give the biological term used to refer to the phenomenon captured in photograph W between organisms A and B towards C 1mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com ii State two implications of the phenomenon mentioned in d i above 2marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com CEKENAS END OF TERM TWO EXAM 2023 231 3 BIOLOGY PAPER 3 PRACTICAL CONFIDENTIAL INSTRUCTIONS These instructions are to enable the head of institution and the teacher in charge of biology to make adequate preparations for 231 3 Biology Practical No one else should have access to this information either directly or indirectly. Each candidate requires the following 30 ml of solution K mixture of starch and albumin 3 ml of solution M3 enzyme diastase 3 ml of solution M4 boiled enzyme diastase Iodine solution 100ml 6 test tubes in a test tube rack Specimen X Thoracic vertebrae Test tube holder Means of timing Thermometer Water bath to hold two 100ml beakers simultaneously Two visking tubings each 6cm long and threads to tie their ends Two 100 ml beakers Access to Means of heating Sodium hydroxide solution 10 Copper II sulphate solution 1 Iodine solution Benedict s solutionBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com GATUNDU SOUTH JOINT EXAMINATIONS 2023 231 1 BIOLOGY PAPER 1 Theory 1. |
Study the photographs below and answer the questions that follow a Name the type of relationship in: i Photograph W 1mark ii Photograph M 1mark b Explain your answer in a ii above 2marks c What is the importance of the relationship taking place in the photograph W 1mark d Using observable feature only explain two ways in which the flower is adapted for the activity taking place in photograph M 2marks e . I Give the biological term used to refer to the phenomenon captured in photograph W between organisms A and B towards C 1mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com ii State two implications of the phenomenon mentioned in d i above 2marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com CEKENAS END OF TERM TWO EXAM 2023 231 3 BIOLOGY PAPER 3 PRACTICAL CONFIDENTIAL INSTRUCTIONS These instructions are to enable the head of institution and the teacher in charge of biology to make adequate preparations for 231 3 Biology Practical No one else should have access to this information either directly or indirectly. Each candidate requires the following 30 ml of solution K mixture of starch and albumin 3 ml of solution M3 enzyme diastase 3 ml of solution M4 boiled enzyme diastase Iodine solution 100ml 6 test tubes in a test tube rack Specimen X Thoracic vertebrae Test tube holder Means of timing Thermometer Water bath to hold two 100ml beakers simultaneously Two visking tubings each 6cm long and threads to tie their ends Two 100 ml beakers Access to Means of heating Sodium hydroxide solution 10 Copper II sulphate solution 1 Iodine solution Benedict s solutionBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com GATUNDU SOUTH JOINT EXAMINATIONS 2023 231 1 BIOLOGY PAPER 1 Theory 1. The diagram below shows an apparatus used during collection of specimen a Identify the apparatus 1mk b What is the use of the apparatus named above 1 mk 2. |
I Give the biological term used to refer to the phenomenon captured in photograph W between organisms A and B towards C 1mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com ii State two implications of the phenomenon mentioned in d i above 2marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com CEKENAS END OF TERM TWO EXAM 2023 231 3 BIOLOGY PAPER 3 PRACTICAL CONFIDENTIAL INSTRUCTIONS These instructions are to enable the head of institution and the teacher in charge of biology to make adequate preparations for 231 3 Biology Practical No one else should have access to this information either directly or indirectly. Each candidate requires the following 30 ml of solution K mixture of starch and albumin 3 ml of solution M3 enzyme diastase 3 ml of solution M4 boiled enzyme diastase Iodine solution 100ml 6 test tubes in a test tube rack Specimen X Thoracic vertebrae Test tube holder Means of timing Thermometer Water bath to hold two 100ml beakers simultaneously Two visking tubings each 6cm long and threads to tie their ends Two 100 ml beakers Access to Means of heating Sodium hydroxide solution 10 Copper II sulphate solution 1 Iodine solution Benedict s solutionBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com GATUNDU SOUTH JOINT EXAMINATIONS 2023 231 1 BIOLOGY PAPER 1 Theory 1. The diagram below shows an apparatus used during collection of specimen a Identify the apparatus 1mk b What is the use of the apparatus named above 1 mk 2. Students at Handege secondary school observed that when sodium chloride was poured onto grass the grass dried up. Explain this observation? 2mks 3. Explain why food is stored in an insoluble form in the cells of living things. 2mks 4. A Name the blood vessel that connects arteries to vein. |
Explain how blood sugar level is maintained constant in human blood 2mks 15. A During a field trip a plant that had flowers drew the attention of a student. Name the division of the plant. 1mk b Students observed an animal with the following features Dorsoventrally flattened body One pair of legs per segment Poison claws on the head i Name the class to which the animal belongs. 1mk ii State the mode of feeding of the animal 1mk 16. How is mammalian skin adapted for excretion 3mks 17. The paddles of whales and the fins of fish adapt these organisms to aquatic habitats. A Name the evolutionary process that may have given rise to these structures. 1mk b What is the name given to such structures? 1mk 18. A patient with blood group A was involved in a road accident and required urgent blood transfusion. His relatives were invited to donate blood. A Name the compatible blood groups 2 marks b State why other blood groups were not compatible 2 marks 19. A . State two effects of Gibberellins on shoots of plants. 2mks b . Account for loss in dry weight of cotyledons in a germinating bean seed. 1mk . 20. Explain why a pregnant woman excretes less urea compared to a woman who is non pregnant. 2mks 21. Study the reaction below and answer the questions that follow. A What biological processes are represented by A and B? 2mks b Identify the product Y. 1mk c State the bond represented by X. 1mk 22. The oxidation state of a certain food is represented below by a chemical equation. 2C3 H 2O 2N 6O2 NH4 2 CO2 5CO2 5H2 O a Calculate the respiratory quotients RQ of the food substance. 2mks b Identify the food substrate 1mk BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 23. An experiment was set to investigate a certain aspect of response. A seedling was put on a horizontal position as shown in figure M below. |
2mks b Identify the food substrate 1mk BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 23. An experiment was set to investigate a certain aspect of response. A seedling was put on a horizontal position as shown in figure M below. After 24 hours, the set up was shown in figure N. a Name the response exhibited by the shoot. 1mk b Explain the curvature of the shoot upwards. 3mks 24. During an accident a victim suffered injuries in the head. After the accident he lost his memory and was passing excessive amount of dilute urine. Suggest the part of the brain that was damaged in relation to: a Memory 1mk b Passing large amounts of dilute urine 1mk 25. Name the tissues whose cells are thickened with; a Cellulose and pectin 1mk b Lignin 1mk 26. State the function of the following structures found in the wall of the trachea. 3mks i Cilia ii Mucus iii Rings of cartilage 27. Name the organelle that would be most abundant in: i White blood cell 1mk ii Salivary glands 1mk 28. The diagram below represents a bone of a mammal a Identify the bone. 1 mark b Name the part marked X. 1 mark c Name the bone that articulates at the part labeled F. 1 mark d State two ways in which the bone is adapted to its function. 2 marks 29. A Under which of the following magnifications would one see a larger part of the specimen X 40 or X 500? Give a reason. 2 marks b State how magnification is worked out in a light microscope 1mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com GATUNDU SUBCOUNTY JOINT EXAMS 231 2 BIOLOGY PAPER 2 1. |
1mk ii Suggest an identity of the enzyme used in the experiment 1mk b i Account for the observation made after 30 minutes 3mks ii Suggest a control experiment for the experiment above 1mk c Give TWO ways of increasing the rate of reaction in the visking tubing in order to have results of the experiment in less than 10 minutes 2mk 3. The diagrams shown below are of two organisms associated with human diseases a i Name the vector of parasite labelled P 1mk ii What is the survival advantage of the close association of the male and female of parasite P as shown in the diagram above? 1mk iii List TWO symptoms of the disease caused by P 2mks b i Name the parasite transmitted by the organism labelled Q 1mk ii Explain why only the female of organism Q transmit human diseases 1mk c Small fish can be used to control spread of human disease associated with Q. Explain. 2mks 4. A cross of red flowered plant and white flowerd plant produced plants with pink flowers. Using letter R to represent gene for red colour and W to represent white colour; a work out a cross between f1 plants. 4mks b Give the i Phenotypic ratio of f2 plants 1mk ii Genotypic ratio of f2 plants 1mk BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com c Name a characteristic in human which is controlled by multiple alleles. 1mk d Which is the biological term used to refer to the condition exhibited by f1 plants. 1mk 5. A State one economic importance of the following plants excretory products. 3mks i tannin ii quinine iii Caffeine b State two reasons why animals need elaborate excretyory system. 2mks c Describe how you can test for presence protein in urine. 3mks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com SECTION B 40 Marks Answer question 6 compulsory and either question 7 or 8 6. |
2 marks 3. The photographs below are organisms found in a given ecosystem. Study them carefully and answer the questions that follow. BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com a During an ecological study in the ecosystem above ecologists established the biomass of the four organisms in the table below. Match the biomass with the organisms above to complete the table below. 2 marks Biomass Organism photograph 400 Kg 1000 Kg 100 Kg 600 Kg b Construct a possible food chain for the ecosystem above 2 marks c i Using a suitable scale, use the data provided to construct a suitable ecological pyramid for the above ecosystem. 5 marks ii Account for the shape of the pyramid above 2 marks d Give four major adaptations of specimen X that enable it to survive in the above ecosystem . 2 marks CONFIDENTIAL Question 1 - Half a piece of medium sized potato tuber labeled M - A small piece of liver fresh liver tissue 1cm x 1cm i.e 1 4kg for about 50 students - Wooden splint - Hydrogen peroxide about 10ml per student - Means of burning the wooden splint - Scalpel - Two empty boiling tubes per student Question 2 - 20 ml of concentrated salt solution in a beaker labeled Q per student - 20 ml of distilled water in a beaker labeled solution R per student NOTE: All photographs should be colour printedBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com NTIMARU SUB-COUNTY CLUSTER EXAMS 231 1 BIOLOGY PAPER 1 JULY AUGUST 2023 - 2 Hours 1. In a prolonged drought period, forage was scarce. It made animals reach out for higher forage and this way the giraffes got the stretched long necks. A What is the term used for a characteristic such as the long necks outlined? 1mk b What is the name given to the theory that describes the evolution of such structures like the long necks? 1mk c State and explain the limitation of the theory you named in b above. 2mks 2. |
Calculate the total magnification of the microscope 2mks 10. Name the disease of the blood characterized by, a Abnormally large number of white blood cells 1mk b Crescent shaped hemoglobin 1mk 11. A State two roles of hydrochloric acid secreted by the stomach wall. 2mks b Name the cells that secrete the above component. 1mk 12. The diagram below shows various types of gene mutations. A Identify the type of gene mutation shown above. 2mks Mutation 1 Mutation 2 b Distinguish between gene and chromosomal mutations 2mks 13. If the ovaries of a woman are removed during the first four months of pregnancy miscarriage is very likely to occur. However if they are removed after the forth month pregnancy can proceed normally. Explain 3mks 14. State two reasons why anaerobic respiration yields less energy than aerobic respiration 2mks 15. State two reasons why fat is not an efficient substrate. 2mks 16. State two reasons why humans are not used as specimens for genetic studies 2mks 17. The diagram below shows two fused bones of a mammal. A Identify the fused bone 1mk b Name the: i Bone that articulates at the point labeled F 1mk ii The hole labeled G 1mk 18. I Define the term predation 1mk ii State three behavioral adaptations displayed by the prey to minimize predation 3mks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 19. A shoot of a seedling exposed to light on one side bends towards the source of light as it grows. A Name the response exhibited by the shoot of the seedling 1mk b Explain how the bending towards the source of light occurs 3mks 20. The diagram below shows the position of an image formed in a defective eye. A Name the defect 1mk b Explain how the defect named in a above can be corrected 2mks 21. State three ways by which plants compensate for lack of ability to move from one place to another. |
His dispute is incorrect given that he belongs to blood group A. Explain without using a genetic cross or a punnet square. 2marks b Haemophilia is a sex linked trait in humans caused by a recessive gene located in the X chromosome. A man with normal blood clotting marries a woman who also has normal blood clotting in the event of a cut. On getting offsprings, one of their sons turned out to be a haemophiliac. By the use of letter H for Normal blood clotting, illustrate the outcome of the haemophiliac son using a genetic cross. 4marks c Other than haemophilia state two sex linked traits in human. 2marks 2. A student set up materials in an experiment as shown below. Sugar a State the physiological process being investigated. 1mark b If the experiment set up was left over-night, state observation in the set up A and B. 2marks c Account for the observations in each set up. 3marks d If another experiment C was set such that nothing is placed in the potato cup, state and explain the results that would have been obtained. 2marks 3. The diagram below represents bread mould Rhizopus . Fresh potato Boiled Potato WaterBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com a Identify the part labelled A 1 mark b State the function of parts labelled C. 1mark c List two differences between Class chilopoda and diplopoda. 2marks Class chilopoda Class diplopoda d The diagram below represents a section obtained from a plant. Classify the plant from which the section was obtained under the following: 2marks i Division................................................................................................................................... ii Class ...................................................................................................................................... e Give two reasons for your answer in d ii above. 2marks 4. . The diagram below represents a simple respiratory pathway in cells. A Name the process marked X and Y. 2marks b State two differences between process X and Y. 2marks c State the name of substance B and condition under which it is formed. 2marks d Explain how body size affects the rate of respiration in animals. 2marks 5. |
2marks c State the name of substance B and condition under which it is formed. 2marks d Explain how body size affects the rate of respiration in animals. 2marks 5. The diagram below shows structures of the bat wing and human arm. Wing membraneBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com a These structures are thought to have same ancestral origin. State one structural similarity and one adaptational difference between the two. I Structural similarity. 1mark ii Adaptational difference. 2marks b Give two other examples of structures in nature that show the type of evolution as in a above. 2marks c Distinguish between the terms chemical evolution and organic evolution . 2marks d What is the study of fossils? 1mark SECTION B 40 MARKS Answer question 6 compulsory and either 7 or 8 in the spaces provided . 6. The table below how the quantities of sweat and urine vary with external temperature. External Temperature 0 c 0 5 10 15 20 25 30 35 Urine cm3 h 100 90 80 70 60 50 40 30 Sweat cm3 h 5 6 10 15 30 60 120 200 a Using the same grid, draw graphs of quantities of urine and sweat produced against external temperature . 6marks b At what temperature is the amount of sweat and urine produced equal. 1mark c Account for the amount of sweat produced as the temperature rises. 3marks d Explain the observations made on the amount of urine produced as temperature rises. 4marks e Explain how the erector pili muscle help in temperature regulation when it is cold. 4marks f How does Anti diuretic hormone affect the amount of urine produced by a mammal per day. 2marks 7. Explain how various structural features of plants affects the rate of transpiration. 20marks 8. A . Describe what happens in the nervous system of a person who withdraws a finger from very hot object 10marks b . Describe the roles of the following plants hormones in growth and development of plants. |
2 mks 18. A Beside venation, state two other external characteristics of leaves that can be used to classify plants. 2mks b How can floral parts be used to classify plants 2mks 19. A What is meant by the term seed dormancy? 1mk b State three causes of seed dormancy. 3mks 20. Explain why; a Mammalian testes are located to hang outside the body. 2mks b Four months after fertilization, ovaries can be removed from a human female, without terminating pregnancy. 2mks 21. State three structural differences between arteries and veins. 3 mks 22. What is the function of the following structure in the human reproductive organ? A Fallopian tubes. 1 mk b Epididymis. 1 mk c Scrotal sac 1mk 23. A State two ideas proposed by Lamarck s in his theory of evolution. 2 mks b Why is Larmark s theory not acceptable? 1 mrk BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.comBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com MUMIAS WEST JOINT EXAMINATION 231 2 BIOLOGY Paper 2 THEORY SECTION A 4OMKS Answer ALL the questions in this section in the spaces provided. 1. The diagram below represents a food web in a terrestrial ecosystem. A Which organism has the highest number of preys l mk b Construct food chains with snakes as tertiary consumers 2mks c State the trophic level occupied by hawks in the food chains constructed in b above lmk d Describe how capture-recapture method can be used in estimating the population of fishes in a lake. 4mks 2. Study the diagram below and answer the questions that follow. |
A Which organism has the highest number of preys l mk b Construct food chains with snakes as tertiary consumers 2mks c State the trophic level occupied by hawks in the food chains constructed in b above lmk d Describe how capture-recapture method can be used in estimating the population of fishes in a lake. 4mks 2. Study the diagram below and answer the questions that follow. A Name the part labeled A and B 2marks b State the function of the part labeled C 2marks c How is the part labeled E adapted to its function 2marks d Identify the structure that perform the same function as one illustrated above in 2marks i Amoeba ii Fish BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.comBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 3 a What is multiple allelism? 1mk b A pure breeding black male mouse was mated with a pure breeding brown female mouse. All the offspring had black coat colour. Explain the appearance of black coat colour in the offspring. 1mk i If the black parental mouse was mated with a mouse that is heterozygous for coat colour, work out the genotypic ratio of the offspring. Show your working. 4mks ii State two disorders in human beings that are as a result of chromosomal mutation. 2mks 4. A Explain what happens to excess amino acids in the liver of humans 3mks b Name two parts of human nephron which are only found in the kidney cortex. 2mks c i In what form is carbon ii oxide transported in blood. 1mk ii Explain why it may cause death 2mks 5. The diagram below indicates an organism that grows under shaded places with damp conditions. Study it and answer the questions that follow. A Name the division to which the specimen belongs. 1 mark b Name and state the functions of the parts labelled Q, R and S. 6 marks c Name the two body forms of the organism in its alternation of generation. |
2marks . D i Account for the length of hind limb femur between day 3 and day 7. 3 marks ii Day 7 and day 10. 2 marks e State the hormones involved in the growth pattern represented by the graphs. 2 marks f State two advantages for metamorphosis in organisms. 2 marks 7 a Describe the structural adaptations of mammalian heart to its functions 10mks . B Explain the role of osmosis in organisms 10mks 8. Describe the movement of water from the soil up to the leaves and then into the atmosphere. 20 marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com MUMIAS WEST JOINT EXAMS BIOLOGY 231 3 BIOLOGY PRACTICAL i a You are provided with specimen M. Peel off the epicarp. Scoop three spatulas full of the endocarp and place the portion into a clean beaker. Smash the specimen in the beaker using a glass rod. Add 20 ml of distilled water and stir using the glass rod to form solution M. Using the reagents provided carry out a food test to test for the food substance found in solution M. Spare the remaining solution to be used later. Fill the table below. Reducing sugar test Starch test Observation: Observation: Conclusion: Conclusion: 4mks b Movement of food molecules from the digestive system into the blood stream can be investigated using avisking tube. You have been provided with a 6cm visking tube. PROCEDURE : Soak the visking tube in water for afew minutes then open the visking tubing and tightly tie one end such that there should be no leakage. Fill the tubing with 5ml of solution M from the beaker and tie the remaining end. Ensure again there is no leakage. Rinse the outer surface of the visking tubing to remove any traces of the paste; Immerse visking tubing and its contents in distilled water in a boiling tube. Pour into the boiling tube distilled water such that the visking is fully immersed. Leave the set up undisturbed for at least 20 minutes. Carefully remove the visking tubing and its contents from the boiling tube. |
Pour into the boiling tube distilled water such that the visking is fully immersed. Leave the set up undisturbed for at least 20 minutes. Carefully remove the visking tubing and its contents from the boiling tube. After 20 minutes carry out afood test again using the sample of water from the boiling tube in which the visking tube had been immersed. Reducing sugar test Starch test Observation: Observation: Conclusion: Conclusion: 4mks c i Why was the visking tube rinsed before the start of the experiment. 1mk ii Explain what has happened in b above at the end of the experiment. 2mks d Name the part of the digestive system that might be represented by the visking tube. 1mk e i Name the blood vessel that transports oxygenated blood from the part named d above to organ R in question 2 below . 1mk ii With reference to the visking tube provided state one observable feature that adapts the part named in d above to its function. 1mk BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com ii You are provided with a photograph of specimen R showing an organ from the body. You are also provided with a piece of specimen R. Study them and answer the questions that follow. SPECIMEN R. a i Name specimen R. 1mk ii label on the photograph the following parts. 3mks Gall bladder Aorta. Inferior venacava b Explain why malfunctioning of R leads impaired sugar regulation. 3mks c Cut specimen R into two equal pieces. Immerse one piece into aboilling tube. Add alittle water and boil it for five minutes. Label one boiling tube A. Label another boiling tube B. Using a pair of forceps remove the piece of R that has been boiled from the boiling tube and put it in the boiling tube labeled A. Take the remaining piece of R that was not boiled and put it into the other boiling tube labeled B. In each of the boiling tubes A and B add 10 ml of hydrogen peroxide respectively. |
Using a pair of forceps remove the piece of R that has been boiled from the boiling tube and put it in the boiling tube labeled A. Take the remaining piece of R that was not boiled and put it into the other boiling tube labeled B. In each of the boiling tubes A and B add 10 ml of hydrogen peroxide respectively. I Record your observation A: 1mk B: 1mk ii Account for the observation in A: 2mks B: 1mks iii Which excretory function of specimen R is being investicated. 1mk iv State one disease that can affect specimen R. 1mk iii You are provided with specimens H and K. Observe the specimens keenly. A State two functions of specimen K. 2 marks b Name the division and class to which specimen H belongs. Division 1 mark Reason 1 mark Class 1 mark Reasons 2 marks c State three adaptations of specimen K for maximum photosynthesis. 3marks d Explain two ways in which specimen H is adapted for survival in its habitat. 2 marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com MUMIAS WEST JOINT EXAMS BIOLOGY PRACTICAL CONFIDENTIAL Each candidate will require the following; 1. Empty 100ml 250ml beaker test tube rag 2. Distilled water 3. 4 boiling tubes 4. 10ml measuring cylinder 5. Stopwatch 6. Scalpel 7. Glass rod 8. 50ml plastic beaker 9. Spatula 10. Dropper 11. 4 test tubes 12. Specimen R - Asmall piece of liver 13. Specimen H - complete grass 14. Specimen K - Bipinnate leaf 15. Specimen M - Half portion of ripe banana 16. 8cm visking tube 17. 2 pieces of thread 18. Two labels Access to: a Source of heat b Benedict s solution c Iodine solution NOTE: THE PHOTOGRAPH SHOULD COLOURED EASTERN CLUSTER EVALUATION - 2023 BIOLOGY PAPER 1 TERM 2, 2023 1. |
8cm visking tube 17. 2 pieces of thread 18. Two labels Access to: a Source of heat b Benedict s solution c Iodine solution NOTE: THE PHOTOGRAPH SHOULD COLOURED EASTERN CLUSTER EVALUATION - 2023 BIOLOGY PAPER 1 TERM 2, 2023 1. State the name given to the study of: a Fish 1 mark b Cell 1 mark 2. Student classified a lion as follows: Kingdom : Animalia Phylun: Mammals Specific name: Panthera leo Identify three mistakes in her work. 3 marks 3. State why it is important for plants to lose water into the atmosphere. 3 marks 4. A Name the disease that causes: i Thickening and hardening of arteries 1 mark ii Formation of clot in blood vessels 1 mark b In a certain person, blood took a long time to clot after a cut. What vitamin deficiency was the person likely to have been suffering from? 1 mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 5. A Name the causative agents of the following diseases. I Pulmonary tuberculosis 1 mark ii Whooping cough 1 mark b In an experiment to analyse a sample of air, a J tube was used to find out the amount of carbon IV oxide and oxygen in the sample. The length of the sample air in J- tube was 8cm and after mixing it with some sodium hydroxide solution for some minutes, the length was reduced to 7.6cm. When pyrogallic acid was also made to mix with the sample of air for some minutes, the length reduced further to 6.6cm. A What was the percentage of: i Oxygen in the air sample? Show your working 2 marks ii Carbon IV oxide in the air sample? Show your working 2 marks b What was the role of: i Sodium hydroxide solution 1 mark ii Pyrogallic acid 1 mark . 6. A Use the data given to answer the questions that follow. Organism Number Lion 10 Grass 1000 Antelope 200 i Construct a possible food chain. |
6. A Use the data given to answer the questions that follow. Organism Number Lion 10 Grass 1000 Antelope 200 i Construct a possible food chain. 1 mark ii Construct a pyramid of numbers from the given data. 2marks b What is the role of the following bacteria in the nitrogen cycle? I Nitrobacteria 1 mark ii Clostridium 1 mark iii Thiobacillus denitrificans 1 mark 7. It was observed that when maggots are exposed to light, they move to dark areas. On the other hand, chlamydomonas and spirogyra move towards light. A Name the type of response shown by the organisms. 1 mark b Give one advantage of the response shown by chlamydomonas and spirogyra. 1 mark c Shoot tips are observed to bend towards light coming from one direction. I Name the type of response. 1 mark ii Explain how this response occurs. 4 marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 8. A State two factors that cause seed dormancy. 2 marks b What is the role of the following hormones in insect metamorphosis? 2 marks i Juvenile hormone ii Ecdysome 9. A Name any two salivary glands. 2 marks . B Name two digestive enzymes secreted in their inactive form. 2 marks 10. Draw a trifoliate dicotyledonous leaf that has serrated margin and rounded tip apex. 3 marks 11. Two normal parents gave birth to a son later in his years they found out that he always picked up a red jersey when going to school yet the school uniform was a green jersey. They tried to explain to the boy the mistake but the boy could not understand. I Identify the generic disorder the boy was suffering from. 1 mark ii The possible genotype of the parents. 2 marks iii Using a genetic cross determine the boy s genotype. 4marks 12. The figure below illustrates two cells obtained from two different organisms. |
2 marks iii Using a genetic cross determine the boy s genotype. 4marks 12. The figure below illustrates two cells obtained from two different organisms. A Give the name used to: i Cell J 1 mark Reason: 1 mark ii Cell R: 1 mark Reason: 1 mark b State the function of the following parts of a microscope i Mirror 1 mark ii Condenser 1 mark iii Stage 1 mark 13. A i What is respiratory quotient. 1 mark ii State its importance. 2 marks b State two factors affecting the rate of respiration. 2 marks 14. State three methods of fossil formation. 3 marks 15. A Name two types of involuntary muscles in mammals. 2 marks b Differentiate between a tendon and ligament. 1 mark c Name two types of synovial joint. 2 marks 16. Explain why: a Four months after fertilization, ovaries can be removed from human female without terminating pregnancy. 2 marks b The chances of fertilization are higher in organisms having internal fertilization. 2 marks 17. List three symptoms of diabetes mellitus. 3 marks 18. State three ways in which osmosis is significant to plants. 3 marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com EASTERN CLUSTER EVALUATION - 2023 231 2 BIOLOGY PAPER 2 THEORY SECTION A. 1. A What is accommodation? 1mk b Describe the sequence of events that occur in the eye for one to be able to see clearly i a distant object 4mks ii if one moved from a dim lit room to bright light. 3mks 2. The following are short messages sms on cell phone communication between Mrs. Mkenzie and her husband. They can be used as analogies of gene mutation Intentended message Actual message 1. I want a drive I want a driver 2. |
Mkenzie and her husband. They can be used as analogies of gene mutation Intentended message Actual message 1. I want a drive I want a driver 2. Yesterday was my shopping day Yesterday was my hopping day 3 My skirt was stolen My shirt was stolen 4 Tomorrow I will be visiting my team Tomorrow I will be visiting my mate a For each of these messages identify the type of gene mutation illustrated 4mks b State one example of chromosomal mutation that lead to i Change in chromosome structure 1mk ii Change in chromosomal number 1mk c Explain why genetic counseling is termed as one practical application of genetics 2mks 3. A What is active transport? 1mk b State three factors that increase the rate of active transport. 3mks c Give four roles of active transport in living organisms. 4mks 4. Three tubes each containing 1ml saliva and 1ml water were incubated in water baths at different temperatures as shown in the diagram below for 30 minutes. Another one tube containing 1ml starch solution was incubated for the same length of time in each water bath. The contents of the two tubes in each water bath was then mixed and incubated for further 30 minutes. The content of each tube was then tested for starch using iodine solution. A What was the aim of the experiment? 1 mark b Why was it necessary to incubate the tubes for 30 minutes before mixing their contents? 1 mark c State the colour changes you would expect to observe after adding iodine solution. 3 marks d Account for the expected observations. 3 marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 5. Below is a diagram of a sperm cell. A Identify parts labeled X and Y. 2 marks b Explain how parts W and Z adapt the cell to its function. 4 marks c Using letter P identify or label on the diagram the part of the cell rich in DNA. 1 mark d State the function of part X. 1 mark 6. An experiment was carried out whereby three healthy rats were fed on equal amounts of glucose. After half an hour, the glucose concentration per ml. |
1 mark 6. An experiment was carried out whereby three healthy rats were fed on equal amounts of glucose. After half an hour, the glucose concentration per ml. Of blood was measured at 15 minutes intervals for three hours. The following results were obtained. 0 min 15 min 30 min 45 min 60 min 75 min 90 min A 0.800 0.774 0.715 0.680 0.650 0.595 0.555 B 0.745 0.695 0.695 0.660 0.635 0.600 0.545 C 0.795 0.695 0.665 0.635 0.590 0.550 0.495 Mean 0.780 0.72 0.691 - 0.625 - 0.532 a i Calculate the mean concentration of glucose in mg per ml of blood at 45 and 75 minutes. Record your answer on the table. 2 marks ii On the graph paper provided, plot a graph of the mean glucose concentration against time. 6 marks iii What was the mean glucose concentration in the blood after 37.5 minutes? 1 mark iv Give a reason why it was necessary to use three rats in the experiment instead of one. 1 mark v Why was the initial concentration of glucose in the rats not the same? 2 marks vi Account for the difference in mean glucose concentration during the period. 3 marks b Give two reasons why glucose is the main respiratory substrate. 2 marks c Give three ways in which glucose is assimilated in the body. 3 marks 7. A What assumption are made when using the captured recapture method in estimating population of animals. 5 marks b Describe how you would use the capture recapture method to estimate the population of fish in the school pond. 13 marks c State two other methods of estimating population. 2 marks 8. Describe the role of the liver in homeostasis. 20mks Glucose conc. |
2 marks 8. Describe the role of the liver in homeostasis. 20mks Glucose conc. Mg ml RatsBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com EASTERN CLUSTER EVALUATION - 2023 231 3 BIOLOGY PAPER 2 PRACTICAL 1. Cut 2 pieces of specimen Q provided; each 4 cm long. Split each half-way at the center cut about 2 cm as shown below on the diagram. You are provided with 2 petri dish S and T. Place one piece on petri dish S, the other on Petri dish T. To S, add distilled water, and T add 25 sucrose solution. Leave the set-up for 15 minutes. Record observation on the table below 2mks Petri-dish Observation S T i Explain the observation in S , T 4mks ii Feel both Q in S and T between 2 fingers and record observations. 2mks iii Explain the significance of the conditions in S to flowering plants. 2mks iv Explain what would happen to red blood cells when placed to 23 sucrose solution. 2mks 2. A student collected a number of organisms as shown below. She constructed a dichotomous key as shown below 4cm 2 cm K7 K8BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com Dichotomous key: 1. A Organism with limbs . Go to 2 b Organism without limbs ... go to 3 2. A Organism with three pairs of limbs .. go to 4 b Organism with more than three pairs of limbs go to 5 3. A Organism with calcareous shell Mollusca b Organism with horny scales on body ...Ophidia 4. A Organism with wings .Diptera b Organism without wings . .Isoptera 5. A Organism with four pairs of limbs . Go to 6 b Organism with more than four pairs of limbs .. go to 7 6. |
1mk Significance of this condition 1mk d Account for differences in length of R and S. 1mk e Name the response shown by seedling Q and explain how it occurs Response: 1mk Explain 2mks f State the type of germination 1mk Reason 1mk EASTERN CLUSTER EXAMS BIOLOGY 231 3 CONFIDENTIAL 1. 2 pieces of 4cm long stalk of young bidens pilosa or Tradescantia or zebrina. Means of labelling 2 3 empty petri dishes Distilled water 25 sucrose solutionBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com BOKAKE EXAMINATION 231 1 BIOLOGY PAPER 1 THEORY 1. Name the reagent used for testing presence of 3 marks a Starch b Reducing sugars c Vitamin c 2. State the processes which occur in each of the following organelles. 2 marks a Chloroplast b Mitochondrion c Ribosomes 3. A student observed a specimen through a light microscope. He used the objective lens marked X40.If he indicated the magnification of the image as x 400, what was the eye - piece magnification? Show your working . 3 marks 4. State the function of the following in mammalian trachea. 3 marks a Rings of cartilage b Mucus c Cilia 5. A What do you understand by the term biological control? 1 mark b Explain why all the energy produced by producers does not flow to the tertiary consumers. 2marks 6. Name any three forces that maintain the transpiration stream 3 marks 7. Give the form in which the following gases are transported in blood. 3 marks a Oxygen b Carbon IV oxide. C Carbon II oxide 8. A Name the main group of organisms which comprise the Kingdom Monera. 1mark b State any three ways in which the organisms named in 8 a above affect human lives. |
C Carbon II oxide 8. A Name the main group of organisms which comprise the Kingdom Monera. 1mark b State any three ways in which the organisms named in 8 a above affect human lives. 3marks c State the main characteristics of Monera which distinguish it from all other kingdoms. 1 mark 9. Seed germination is affected by certain plant growth regulators. Describe two actions of gibberellins during seed germination 2marks 10. Why is it necessary for an athlete to breathe heavily after running? 2 marks 11. State ways in which the following diseases can be prevented a Typhoid 2 marks b Malaria 2 marks 12. A person fell from the third floor of a storey building and had part of his brain damaged indicate the part of the brain damaged if the person suffers from the following 4marks i Loss of memory and speech ii Inability to regulate body temperature iii Irregular heartbeat and breathing iv Inability to maintain proper body balance and posture 13. A Name the main product of the dark stage of photosynthesis. 1mark b What is the role of chlorophyll during photosynthesis 2mark 14. Name three mechanisms that prevent self-pollination in flowers that have both male and female parts. 3 marks 15. State three applications of anaerobic respiration. 3 marks 16. What is the significance of highly folded inner membrane of a mitochondrion? 2 marks 17. Why is it necessary for blood from the gut to pass through the liver before joining general circulation? 2 marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 18. A person s urine tested positive for reducing sugars. A Name the type of sugar present in the urine. 1mark b Name the gland and the hormone which failed to control the above condition. 2marks Gland Hormone c Which disease was the person suffering from? 1mark 19. State two roles played by the process of reproduction. 2marks 20. A Name the genetic disorder in humans that is characterized by inability of blood to clot 1mark .. |
State two roles played by the process of reproduction. 2marks 20. A Name the genetic disorder in humans that is characterized by inability of blood to clot 1mark .. b A female human was found to have an extra sex chromosome in her cells. I Give the total number of chromosome in the male individuals cells 1mark ii Explain the possible causes of this condition 2marks iii State two physical characteristics observed in the male individual with such a condition 2marks 21. A State ways in which molars are adapted to their functions. 2marks 22. A Explain why fossil records as evidence of organic evolution are usually incomplete 3 marks b Name the evidence of organic evolution exhibited by occurrence of similar amino acid molecules in a range of organisms 1mark 23. The diagrams below represent germination of a certain seed a Name the type of germination exhibited by the seedling above 1mark b Name the region labeled x 1mark c Explain how the part labeled x of the seedling straightens after exposure to sunlight. 3marks 24. State any one characteristic common to all living organism? 1mark 25. A State one event that occurs in prophase of meiosis I which does not occur in prophase of mitosis. 1 mark b What are the results of the above phenomena? 2 marks 26. Explain why growing grass die a few days when salt is sprinkled on it. 3marks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com BOKAKE JOINT EXAMS 231 2 BIOLOGY PAPER 2 THEORY END OF TERM 2, 2023 SECTION A 40 MARKS 1. The diagram below illustrates circulation in certain organs of the mammalian body. A Identify the blood vessels represented by A, B and C. 3mks b Explain why blood from the small intestines goes to the liver before it goes to any other organ of the body. 2mks c Compare the blood in vessels B and C 1mk B - C - d Outline how a glucose molecule in vessel A finally reaches the heart. 2mks 2. The diagram below represents a section through a human tooth. |
3mks b Use information from the table to predict the concentration of a sucrose solution isotonic to the cells in the tulip stem. 1mk c i Give the term which would be used to describe the cells in the tulip stem after immersion in a solution with a sucrose concentration of 0.7 moles per litre. 1mk ii Draw the appearance of a cell from the tulip stem after immersion in a solution with a sucrose concentration of 0.7 moles per litre. 2mks d State one role of the process being investigated in plants 1mk 5. A How many sex chromosomes are there in each human somatic body cell. 1mk b What is meant by the term sex-linkage? 1mk c Haemophilia is due to a recessive gene. The gene is sex linked and located on the X chrosome. In a family where both parents were normal, one of the sons was haemophiliac. I Using letter H for normal blood clotting gene, work out the genotype of the children. 4mks ii What is the probability of a child born by this couple being a boy and haemophiliac. 4mks d Explain why haemophilia is more common in males than in females. 1mk BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com SECTION B 40MARKS Answer questions 6 compulsory and either question 7 or 8: 6. The mean dry weight in milligrams of germinating barley grains was worked out for whole grain, endosperm and the embryo. The means were determined at two day intervals for twelve days. The results are shown in the table below; Time in days Dry weight of whole grain mg Dry weight of endosperm mg Dry weight of embryo Mg 0 49 45 6 2 46 42 6 4 44 35 9 6 42 24 17 8 40 12 25 10 41 8 32 12 45 8 40 a Using the same axes, draw graphs for dry weight of endosperm, embryo and the total dry weight against time. |
The mean dry weight in milligrams of germinating barley grains was worked out for whole grain, endosperm and the embryo. The means were determined at two day intervals for twelve days. The results are shown in the table below; Time in days Dry weight of whole grain mg Dry weight of endosperm mg Dry weight of embryo Mg 0 49 45 6 2 46 42 6 4 44 35 9 6 42 24 17 8 40 12 25 10 41 8 32 12 45 8 40 a Using the same axes, draw graphs for dry weight of endosperm, embryo and the total dry weight against time. 7mks b What was the average dry weight of the embryo on day 9? 1mk c Account for the dry weight of; i Endosperm from day 0 to 12. 4mks ii Whole grain from day 0 to 12. 4mks d Other than water which other factors are necessary for germination. 2mks e Name the two types of germination. 2mks 7. A Describe the mechanism of opening and closing of the stomata using the following theories. 12mks a Photosynthetic theory. B Starch sugar inter-conversion theory. C The potassium ion theory. B Explain how respiratory surfaces in animals are adapted to their functions. 8mks 8. A Define pollution. 2mks b Describe water pollution under the following:- i Causes. 6mks ii Effects of pollutants on plants and animals. 6mks iii Methods of controlling pollution. 6mks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com BOKAKE EXAMINATON 231 3 BIOLOGY PAPER 3 PRACTICAL 1. You are provided with solution M, Dilute Hydrochloric acid ,DCPIP, Benedict s solution, 1 copper II Sulphate solution and 10 sodium hydroxide solution. Add 2m1 of hydrochloric acid to solution M and Shake. |
6mks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com BOKAKE EXAMINATON 231 3 BIOLOGY PAPER 3 PRACTICAL 1. You are provided with solution M, Dilute Hydrochloric acid ,DCPIP, Benedict s solution, 1 copper II Sulphate solution and 10 sodium hydroxide solution. Add 2m1 of hydrochloric acid to solution M and Shake. Filter the mixture using the filter paper and filter funnel into a boiling tube provided. Wash the residue from the filter paper into a beaker. Using the reagents provided carry out food tests on the residue and filtrate. 15 marks a Residue Food substance being tested for Procedure Observation Conclusion REDUCING SUGARS VITAMIN C PROTEINS b Filtrate Food substance being tested for Procedure Observation Conclusion REDUCING SUGARS VITAMIN C PROTEINS c Account for the observation in a and b above. 2mks d The physiological process demonstrated above occurs in all living things. Name two important processes in animals that depend on it. 2mks 2. You are provided with specimen R and S a i Give a reason why both R and S are fruits. 1mk ii Why is R also reffered to as a seed? 1mk iii Tabulate any two differences between specimen R and S 2mks Specimen R Specimen S b Using a blade provided; carefully make transverse section of specimen S. i Make a labelled diagram of the cut section. Label any three parts. 4mks ii Name the type of placentation in S .Reason 2mks iii What is the likely agent of dispersal of S? Reason 2mkBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 3. The photograph below is of mammalian organ a i. Name the basic functional units of the organ. 1mk ii State any function of the organ above. 1mk b Name the parts labelled- A, B C 3mks c How is the blood vessel E adapted its function. |
A What is sex linkage? 1mark b Name two sex linked traits in Y chromosome in humans 2marks 10. A Explain why Lamarck s theory of evolution is not accepted in modern science 2marks b Give two examples of natural selection in action 2marks 11. Below is a diagram of an organelle that is involved in aerobic respiration a Name the organelle 1mark b Identify the parts labeled A and B 2marks c What is the purpose of in- folding in part labeled D 1mark d Give the mechanical compound which is formed in the organelle and forms the immediate source of energy 1 mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.comBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 12 i Suggest the significance of the following adaptations in bony fish; Flexible vertebral column 1mark Presence of a swim bladder 1mark ii State two features which reduce resistance in fish during swimming 2marks 13. In an experiment on respiration, a mouse was observed to have inhaled 200cm 3 of oxygen and exhaled 199.75 cm 3 of carbon IV oxide in ten minutes. I Calculate the respiratory quotient for the activity in the experiment 2marks II Suggest the food substrate that was broken down 1mark 14. A Explain why malaria cannot be transmitted through blood transfusion 2marks b Explain the significance of the following with respect to ecosystem Decomposers 1mark Predators 1mark 15. State three ways in which seed dormancy benefits a plant 3marks 16. A Explain why maize stalks do not undergo secondary growth yet they increase in girth 3marks b State two characteristics of meristem tic cells 2marks 17. I Explain why two species cannot occupy the same niche 2marks Ii Name the bacteria found in root nodules of leguminous plant 1mark 18. A What are the roles of testes in the mammalian reproductive system? 2marks b Explain why female frogs produce large number of eggs 2marks 19. |
I Explain why two species cannot occupy the same niche 2marks Ii Name the bacteria found in root nodules of leguminous plant 1mark 18. A What are the roles of testes in the mammalian reproductive system? 2marks b Explain why female frogs produce large number of eggs 2marks 19. A Differentiate between gaseous exchange and respiration 2marks b State two characteristics of a respiratory surface 2marks 20. Study the diagram below and the answer questions below i Name compound X 1mark ii State the role played by compound X in small intestine 1mark ii Other than trypsin, name two other enzymes produced in precursor form 2marks iii State the role played by compound X in the stomach 1mark 21. Name the organelle that perform each of the following Protein synthesis 1mark Transport of cell secretions 1mark 22. Name the type of muscle found in human heart 1mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com KIHARU KAHURO 231 1 BIOLOGY PAPER 2 SECTION A 1. In an experiment to investigate the rate of reaction indicated by the equation. C12 H22 O11 C6 H12 O6 C6 H12 O6 Sucrose fructose glucose It was found out that for products fructose and glucose to form, substance K was needed. Temperature was maintained at 37oC , when substance L was added , the reaction slowed and then stopped. A Suggest the identity of the substances K and l 2marks b Other than temperature, state three factors that increase the rate of reaction 3marks c Explain how substance L slowed the rate of reaction 2mks d What type of reaction is represented by the equation 1mark 2. A Study the diagram below that represents a plant in division Bryophyta i Name the parts Labeled Q and R 2 marks ii State two functions of part T 2marks b During a practical activity , form three students of Bahati secondary collected a specimen whose drawing is shown below during a class activity . State the phylum and class , that the organism belongs giving a reason for each case based on observable features only . |
A Suggest the identity of the substances K and l 2marks b Other than temperature, state three factors that increase the rate of reaction 3marks c Explain how substance L slowed the rate of reaction 2mks d What type of reaction is represented by the equation 1mark 2. A Study the diagram below that represents a plant in division Bryophyta i Name the parts Labeled Q and R 2 marks ii State two functions of part T 2marks b During a practical activity , form three students of Bahati secondary collected a specimen whose drawing is shown below during a class activity . State the phylum and class , that the organism belongs giving a reason for each case based on observable features only . Phylum 1mark Reason 1mark Class 1mark Reason 1mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 3. The diagram represents a set up to investigate the conditions necessary for seed germination . The set up was left or 7 days ii What conditions were being investigated in the experiment? 2marks iii Account for the for the expected results in each set up after 7 days A 2marks B 2marks C 2marks 4. The diagram below illustrates circulation in certain organs of the mammalian body . A Identify the blood vessels represented by: A, B C 3marks b Explain why blood from the small intestines goes to the liver before it goes to any other organ of the body. 2marks c Compare the blood in vessel B and C 1mark d Outline how a glucose molecule in vessel A finally reaches the heart. 2marks 5. Haemophilia is a sex linked characteristics caused by a recessive gene carried on the X chromosome. A carrier woman marries a normal man. Use letter H to represent the dominant gene a Work out the phenotypes of F1 generation show your working 5marks b What is the probability of couple getting b a hemophiliac son? |
1mark ii Which process in the body is illustrated above? 1mark iii State the part of the body where the above process takes place. 1mark iv State two functions of substance B in the body. 2marks v Name two diseases of the circulatory system caused by excess cholesterol in the food. 2marks b The photograph below an the plants adopted to difficult habitats. Examine them. I Which of the plants are adapted to arid conditions. 2marks ii Give three observable features that enable the plant you have stated in a i above to survive in the arid regions. 3marks iii State three other adaptive feature not observable in the diagram in the photograph of the plants you state in a i above. 3marks iv Give the term used for plants that are adapted to arid and semi-arid conditions. 1mark Q3. You are provided with an actual specimen labeled D. Study it and answer the questions that follows: a State the class from which specimen D was obtained and give two reasons for you answer. Class. 1mark Reason. 1mark b State two observable features that adopt specimen D for gaseous exchange. 2marks c Account for the following features of the specimen D. i Extensive network of veins. 1mark ii Tough leaf blade. 1mark ii Strong and extended petiole. 1mark BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com d Explain why the following procedures would be necessary during the preparation of sections for observation. I Putting the sections in water on a Petridis. 1mark ii Using a sharp scalpel razor blade. 1mar iii Cutting very thin sections. 1mark KIHARU KAHURO BIOLOGY PP3 CONFIDENTIAL, TERM 2 2023 A Specimens i Specimen H Mature orange fruit ii Specimen D Kale sukumawiki leaf with petiole OTHERS 1. Six test tubes per student 2. Scapel Razor blade 3. White tile 4. Droppers 6. Source of heat B Chemical and Reagents 1. DCIPIP 2. |
Droppers 6. Source of heat B Chemical and Reagents 1. DCIPIP 2. Iodine solution 3. Benedict s solution 4. About 3cm3 of substance B Olive oil 5. About 20cm2 NaHCO3BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com LUGARI CONSTITUENCY -MOCK 1 231 1 BIOLOGY PAPER 1 JULY AUGUST 2023 1. Study the diagram below showing a portion of an onion epidermis that had been irrigated with a certain solution X. a In one word describe the condition of the cells 1mk b Describe the process that lead to the condition named above. 3mks 2. The following reaction may proceed in forward or backward direction Glucose fructose sucrose water. A What term is used to refer to the backward reaction. 1mk b In which part of alimentary canal does the backward reaction occur? 1mk c Name the enzyme that catalyzes the backward reaction. 1mk 3. The diagram shown below represents a nucleus a State the role of the organelle labelled Q 1mk b Name a Kingdom whose members lack structure labelled P 1mk c Which is the general term given to organisms whose cells have structure P? 1mk 4. After fertilization of an ovule, which parts develops into: - a Testa 1mks b Endosperm 1mk 5 a Explain two roles of diffusion in human beings. 2mks B i Name the process through which a plant takes up some mineral ions against a concentration gradient. 1mk ii State two factors that may affect the process named in b i above. 2mks c Distinguish between haemolysis and plasmolysis. 1mk 6. An insect landed on a leaf of an insectivorous plant. Consequently, the leaf closed with its spines interlocking trapping the insect inside it. Name the response exhibited by the leaf. 1mk p QBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 7. The figure below represents a plant. |
Name the response exhibited by the leaf. 1mk p QBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 7. The figure below represents a plant. A State the division it belongs to. 1mk b Label the parts labeled a b 2mk c State the role of part labeled d in the life cycle of the organism. 1mk 8. State any two adaptations of the cardiac muscle that enable it to undergo systole. 2mks 9. A Why are carbohydrates and not lipids the first choice respiratory substrates? 2mks b 2C57H110O6 163O2 114CO2 110H2O Energy. Calculate the RQ from the equation in c above. 2mks 10. Below is a diagram of a group of cells of a specific tissue. I Name the tissue 1mk ii This tissue lines the trachea and bronchi. Suggest its function in these structures. 1mk 11. Study the flow chart below which represents a physiological process in mammals A i Name blood components represented by X. 1mk ii What is the significance of product represented by Z. 2mks b Under what condition is thrombokinase released by the platelets? 1mk 12 a Explain what happens to excess amino acids in the liver of humans. 3mks b Which portions of the human nephron are only found in the cortex? 1mks BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.comBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 13. A potted plant is transferred from outside on a sunny and windy day, to a dark room. A Briefly explain the effect this is likely to have on: i The rate of loss of water from its leaves. 3mks ii The rate of water absorption. 2mks 14. Give a reason why urine of a mammal does not contain amino acids. 1mks 15. A In what form is energy stored in muscles? 1mk b State the role of insulin in human body. |
Below is a drawing of a cell. A With two reasons, identify the cell. 2mks Identify. ---------------------. Reasons: b Which of the three structure X, Y and Z speeds up transmission of the impulse. 1mk 22. A Name the pigment that protects humans from the negative effect of Ultraviolet lights. 1mk b Explain how sunlight contributes to stronger bones and teeth in human beings 2mks 22. A State two structural differences between skeletal muscles and smooth muscles. 2mks Skeletal muscle Smooth muscle i ii b What are antagonistic muscles? 1mk BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.comBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com 23. Name the substrates for the following enzymes i Carbonic anhydrase . 1mk ii Cholinesterase . 1mk 24. A tilapia fish has a full length of 300mm but measures 200mm from the mouth tip to its anus. Determine the tail power of the fish 2mks 25. State the differences between cones and rods in terms of the following 2mks Feature Cone Rod Visual acuity Photochemical 26. Impulse transmission across a synapse is in one direction. Explain 2mks 27. The diagram shown below represents a section of the vertebral column a Name the part labelled S 1mk b State TWO ways in which part T is important to movement in human beings 2mks 28. Give TWO features that make modern man to be more adaptable to the environment 2mks LUGARI CONSTITUENCY EXAM 231 2 BIOLOGY PAPER 2 THEORY 1. The flow chart below shows a process in a plant and animal cell T SBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com a Why is this process necessary in living organisms 3 marks b i Name the process labelled X 2 marks ii Name the part of the cell where process X occurs 1 marks c Name products A, B 2marks 2. . |
Give TWO features that make modern man to be more adaptable to the environment 2mks LUGARI CONSTITUENCY EXAM 231 2 BIOLOGY PAPER 2 THEORY 1. The flow chart below shows a process in a plant and animal cell T SBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com a Why is this process necessary in living organisms 3 marks b i Name the process labelled X 2 marks ii Name the part of the cell where process X occurs 1 marks c Name products A, B 2marks 2. . A The bar charts show the percentages of a human population with each type of blood group and the percentages of a cattle population with and without horns. Which type of variation is shown in each population? 1mark Human: Cattle: b Albinism lack of skin pigmentation in humans is caused by two recessive alleles. A phenotypically normal non-albino couple have three children; the first two are non-albino, the third is an albino. In your answer, use A for the dominant allele and a for the recessive allele. I What are the genotypes of the parents? 1mark ii Is there a possibility that their next child will be an albino? Explain your answer 2 marks iii The albino child eventually marries a non-albino whose father was an albino. What is the probability that their first child will be an albino? Show all working. 4marks 3. The diagram below shows structures of the bat wing and human arm. BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com These structures are thought to have same ancestral origin. A State one structural similarity and one adaptational difference between the two. I Structural similarity. 1 mark ii Adaptation difference. 2 marks b Give two other examples of structures in nature that show the type of evolution as in a above. 2 marks c Distinguish between the terms chemical evolution and organic evolution . 2 marks d What is the study of fossils called? 1 mark 4. |
8mks b Account for the shape of the curve of fresh weight between: i 2 10 weeks. 2mks ii 12 16 weeks. 2mks c Suggest why dry weight remains constant after week 14. 2mks d Describe how the dry weight of the maize could have been determined at various times. 3mks e State two advantages and one disadvantage of fresh weight as a measure of growth. 3mks 7. Describe how the leaves of mesophyte are suited to their function 20marks 8. Describe the nitrogen Cycle 20 marks LUGARI CONSTITUENCY JET EXAM BIOLOGY PAPER 3 PRACTICAL 1. You are provided with a specimen labelled J. a With reasons identify the organ of a plant represented by J. 1mk Reasons 2mks b Using observable features only identify the class to which J belongs. Class 1mk Observable features. 1mk BIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com a c In a previous experiment the lower epidermis and the upper epidermis were peel off, the number of stomata was determined using a microscope at high power objective. The results obtained are recorded in the table below. Arrange number of stomata in the field of view Lower epidemis Upper epidermis 30 13 1 Account for the average number of stomata on the upper and lower side of specimen J. Upper epidermis. 3mks Lower epidermis. 3mks 2 You are provided with photographs of: Specimen SI mango fruit Specimen T1 Garden pen pod U S1 TI a Specimen SI was cut longitudinally. The photograph below shows one half S1 b c d v w XBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com i Name the parts labelled a,b,c,d and e 5mks Study the photographs of specimen T1 and name the parts labelled u,v,w,x ,y and z labeled 4mks iii Identify the type of presentation in each fruit. |
3mks Lower epidermis. 3mks 2 You are provided with photographs of: Specimen SI mango fruit Specimen T1 Garden pen pod U S1 TI a Specimen SI was cut longitudinally. The photograph below shows one half S1 b c d v w XBIOLOGY PAPER 1, 2 3 www.freekcsepastpapers.com i Name the parts labelled a,b,c,d and e 5mks Study the photographs of specimen T1 and name the parts labelled u,v,w,x ,y and z labeled 4mks iii Identify the type of presentation in each fruit. S1, T1 2mks b Using observable features identify the method of dispersal for each fruit and in each care give reasons for your answer. S1 Method of dispersal 1mk Reasons 3mks T1 Method of dispersal 1mk Reasons 2mks c Name the type of fruits represented by S1 1mk T1 1mk d What is the importance of fruit and seed dispersal. 3mks Q3 You are provided with solution S a Using the reagents provided to carry out the appropriate food tests and complete the table below. 8mks Food substance Procedure Observation Conclusion BIOLOGY PAPER 3 231 3 FORM 4 CONFIDENTIAL Each student should have Specimen J young kales leaf sukuma wiki Solution S - solution S is dilute milk Benedicts solution 10 sodium hydroxide 1 copper sulphate solution 0.1 DCPIP. |
THE KENYA NATIONAL EXAMINATIONS COUNCILKenya Certificate of Secondary Education101 11 ENGLISH Paper 1 Functional Skills Nov. 2019 - 2 hours Name Index Number ... aCandidate's Signature .. DateInstructions to candidates a Write your name and index number in the spaces provided above. B Sign and write the date of examination in the spaces provided above. C Answer all the questions in this paper. D All your answers must be written in the spaces provided in the question paper. 0 This paper consists of 8 printed pages. F Candidates should check the question paper to ascertain that all the pages are printed asindicated and that no questions are missing. A Candidates must answer the questions in English. For Examiner's Use OnlyMaximum Candidate's Score ScoreLos 30 Total Score 2019 The Kenya National Examinations Counciltov"919237 Turn over21. Imagine you have recently transferred to another school. Write letter to your best friend in yourformer school persuading him or her to transfer to your new school. In your letter, give atleastthree reasons why this school is better than your former school. 20 marks Kenya Certificate of Secondary Education, 2019919237 rotKenya Certificate of Secondary Education, 2019919237 tov Turn overKenya Certificate of Secondary Education, 2019919237 tov52. Read the passage below and ill in each blank space with the most appropriate word, 10 marks Regardless of your intelligence and the way you lear, knowing how to concentrate is critical to a . Developed through self-disciplineIt is a habit that time and effort to develop for student's success. Concentration is a consistent success. Athletes havi Surgeons have it; and successful students d .. have it, Concentration can be defined as the process of paying attention or e attention of the tk P onsen hand. The mark of a genius is the g ..the task is fun and exciting. To concentrate on one thing at a time. This is h Wu it becomes more difficult when one is required to read j that is boring or complicated. Adapted from: Bridging the Gap by Brenda D. Smith, Pearson Education Inc. 2008 3. |
This is h Wu it becomes more difficult when one is required to read j that is boring or complicated. Adapted from: Bridging the Gap by Brenda D. Smith, Pearson Education Inc. 2008 3. A Study the Poem below, and then answer the questions that follow. A stooped old man and a young manChanced to meet one day. The young one said tothe elderInhis usual braggart way, Why don't you walk up straight like me?That's no way to grow old;sal a form of habit;At least that s what I'm told The old man gave him a knowit And said, My dear young friend,Have you ever examined your wheat field, And noticed the heads that bend?Tfnot, just look them over As harvest time draws nigh;You'll find that the heads that are emptyAre standing tall and high, But the heads that count in the harvestAre filled and bending low, Awaiting the reaper s sickle; Their time is short, they know. And as the young man passed on by,He slowly bowed his head, No doubt he pondered many a day On the things that the old man said,From How to Teach Poetry by Amy Z. Davis and Florence StrattonHeinemann Edu Books, 1984 aKenya Certificate of Secondary Education, 2019919237 tov Turn over 919237 Identify two features of oral songs in this poem, 4 marks Gi Identify any two words that you would stress in the second line ofthe ast stanza. Explain your answer. G marks ii How would you perform the fifth line ofthe first stanza? 2 marks dentify the intonation in the following sentences: marks Didyou do your homework? Gi What a beautiful gist! Gil Get out of sight now. For each of the following words, provide another that is pronounced in the same way. 6 marks Whale i Need Seem Quewe Rain vi PairKenya Certificate of Secondary Education, 2019TOW 919237 Assume that you attended a youth conference on drug abuse. Your principal has asked youto give an oral report during the assembly. |
For each of the following words, provide another that is pronounced in the same way. 6 marks Whale i Need Seem Quewe Rain vi PairKenya Certificate of Secondary Education, 2019TOW 919237 Assume that you attended a youth conference on drug abuse. Your principal has asked youto give an oral report during the assembly. How would you use your voice effectively? 6 marks For each ofthe situations below, write what you would say. 9 Would you like to join us for tea? 1 mark ii Thank you for the wonderful gift 1 mark Gi During a group discussion you are not quite sure what someone has just sai. You want to seek clarification. 2 marks Kenya Certificate of Secondary Education, 2019101 Turn over8 iv You did not complete your homework because you were not feeling well lastnight You go to your class teacher to explain, 2 marks THIS IS THE LAST PRINTED PAGE.3 Kenya Certificate of Secondary Education, 2019919237 1011. |
NameIndex NumberCandidate s Signature Date.............................121 1MATHEMATICS ALT A Paper 1 Nov. 20162 hoursTHE KENYA NATIONAL EXAMINATIONS COUNCIL Kenya Certificate of Secondary EducationMATHEMATICS ALT A Paper 12Vi hoursInstructions to candidates a Write your name and index number in the spaces provided above. B Sign and write the date of examination in the spaces provided above. C This paper consists of two sections; Section I and Section II. D Answer all the questions in Section I and only five questions from Section II. E Show all the steps in your calculations, giving your answers at each stage in the spaces provided below each question. F Marks may be given for correct working even if the answer is wrong. G Non-programmable silent electronic calculators and KNEC Mathematical tables may be used, except where stated otherwise. H This paper consists of 18 printed pages. I Candidates should check the question paper to ascertain that all the pages are printed as indicated and that no questions are missing. J Candidates should answer the questions in English. For Examiner s Use Only Section I16TotalSection II2324TotalGrand Total 2016 The Kenya National Examinations Council 121 1916016Turn overfor free past papers visit: www.freekcsepastpapers.com2SECTION I 50 marks 1.Answer all the questions from this section in the spaces provided. Without using a calculator evaluate, -2 5 3 - 9 3 5 -3 x -5 - 2 x 4 3 marks 2.Simplifyp 2 2pq q21 2 T 2 3-p q p q - q 4 marks 3. The external length, width and height of an open rectangular container are 41 cm, 21cm and 15.5 cm respectively. The thickness of the materials making the container is 5 mm. If the container has 8 litres of water, calculate the internal height above the water level. 4 marks 916016Kenya Certificate of Secondary Education, 2016121 1for free past papers visit: www.freekcsepastpapers.com34. The figure below shows a net of a solid measurements are in centimetres .Below is a part of the sketch of the solid whose net is shown above. |
If the container has 8 litres of water, calculate the internal height above the water level. 4 marks 916016Kenya Certificate of Secondary Education, 2016121 1for free past papers visit: www.freekcsepastpapers.com34. The figure below shows a net of a solid measurements are in centimetres .Below is a part of the sketch of the solid whose net is shown above. Complete the sketch of the solid, showing the hidden edges with broken lines. 3 marks 916016Kenya Certificate of Secondary Education, 2016121 1Turn overfor free past papers visit: www.freekcsepastpapers.com45. Given that OA 2i 3j and OB 3i 2j, find the magnitude of AB to one decimal place. 3 marks 6. A bus travelling at an average speed of 63 km h left a station at 8:15 a.m. A car later left thesame station at 9:00 a.m. and caught up with the bus at 10:45 a.m. Find the average speed of the car. 3 marks 7.Given that x is an acute angle and cos x - V5 find, without using mathematical tables or a calculator, tan 90 x . 2 marks 916016Kenya Certificate of Secondary Education, 2016121 1for free past papers visit: www.freekcsepastpapers.com8. 3 marks Without using mathematical tables or a calculator, evaluate 273 X281 416 9.A minor arc of a circle subtends an angle of 105 at the centre of the circle. If the radius of the circle is 8.4 cm, find the length of the major arc. Take it . 3 marks 10.The gradient of the tangent to the curve y ax3 bx at the point 1,1 is 5. Calculate the values of a and b. 4 marks 916016Kenya Certificate of Secondary Education, 2016121 1Turn overfor free past papers visit: www.freekcsepastpapers.com611. A line with gradient of 3 passes through the points 3, k and k, 8 . |
Calculate the values of a and b. 4 marks 916016Kenya Certificate of Secondary Education, 2016121 1Turn overfor free past papers visit: www.freekcsepastpapers.com611. A line with gradient of 3 passes through the points 3, k and k, 8 . Find the value of k and hence express the equation of the line in the form ax by c, where a, b and c are constants. 3 marks 12. Points L and M are equidistant from another point K. The bearing of L from K is 330 . The bearing of M from K is 220 .Calculate the bearing of M from L. 3 marks 916016Kenya Certificate of Secondary Education, 2016121 1for free past papers visit: www.freekcsepastpapers.com713. In this question, mathematical tables should not be used. A Kenyan bank buys and sells foreign currencies as shown below:Buying Selling In Kenya Shillings In Kenya Shillings 1 Hong Kong Dollar 9.74 9.771 South African Rand 12.03 12.11A tourist arrived in Kenya with 105 000 Hong Kong Dollars and changed the whole amount to Kenya Shillings. While in Kenya, she spent Sh 403 879 and changed the balance to South African Rands before leaving for South Africa. Calculate the amount in South African Rand, that she received. 3 marks 114.A small cone of height 8 cm is cut off from a bigger cone to leave a frustum of height 16 cm. If the volume of the smaller cone is 160 cm3, find the volume of the frustum. 3 marks w 15. The production of milk, in litres, of 14 cows on a certain day was recorded as follows:22. 26. 15. 19. 20. 16. 27, 15, 19, 22, 21, 20, 22 and 28.Determine: a the mode: 1 mark b the median. 2 marks 916016Kenya Certificate of Secondary Education, 2016121 1Turn overfor free past papers visit: www.freekcsepastpapers.com816. |
16. 27, 15, 19, 22, 21, 20, 22 and 28.Determine: a the mode: 1 mark b the median. 2 marks 916016Kenya Certificate of Secondary Education, 2016121 1Turn overfor free past papers visit: www.freekcsepastpapers.com816. Given that Log 4 0.6021 and Log 6 0.7782, without using mathematical tables or acalculator, evaluate log 0.096. 3 marks r "3Kenya Certificate of Secondary Education, 2016121 1016016for free past papers visit: www.freekcsepastpapers.com9SECTION II 50 marks Answer any five questions from this section in the spaces provided. X 3 117. A Solve the equation------ ------24 x 2 4 marks b The length of a floor of a rectangular hall is 9 m more than its width. The area of the floor is 136 m2. I Calculate the perimeter of the floor. 4 marks ii A rectangular carpet is placed on the floor of the wall leaving an area of 64 m2. If the length of the carpet is twice its width, determine the width of the carpet. 2 marks Kenya Certificate of Secondary Education, 2016121 1916016Turn overfor free past papers visit: www.freekcsepastpapers.com1018. Three business partners: Asha, Nangila and Cherop contributed Ksh 6 000, Ksh 85 000 and Ksh 105 000 respectively. They agreed to put 25 of the profit back into business each year. They also agreed to put aside 40 of the remaining profit to cater for taxes and insurance. The rest of the profit would then be shared among the partners in the ratio of their contributions. At the end of the first year, the business realised a gross profit of Ksh 225 000. A Calculate the amount of money Cherop received more than Asha at the end of the firstyear. 5 marks b Nangila further invested Ksh 25 000 into the business at the beginning of the secondyear. |
The rest of the profit would then be shared among the partners in the ratio of their contributions. At the end of the first year, the business realised a gross profit of Ksh 225 000. A Calculate the amount of money Cherop received more than Asha at the end of the firstyear. 5 marks b Nangila further invested Ksh 25 000 into the business at the beginning of the secondyear. Given that the gross profit at the end of the second year increased in the ratio 10:9, calculate Nangila s share of the profit at the end of the second year. 5 marks Kenya Certificate of Secondary Education, 2016121 1916016for free past papers visit: www.freekcsepastpapers.com1119. The frequency table below shows the daily wages paid to casual workers by a certain company. Wages in Shillings100-150150-200200-300300 100400-600No. Of workers240100 a In the grid provided, draw a histogram to represent the above information. 5 marks b i State the class in which the median wage lies. 1 mark ii Draw1 a vertical line, in the histogram, showing where the median wage lies. 1 mark c Using the histogram, determine the number of workers who earn Sh 450 or less per day. 3 marks 916016Kenya Certificate of Secondary Education, 2016121 1Turn overfor free past papers visit: www.freekcsepastpapers.com1220. In the diagram below, the coordinates of points A and B are 1, 6 and 15, 6 respectively. Point N is on OB and that 30N 20B. |
6 marks b Juma and Akinyi contributed all the new earnings to buy maize at Ksh 1175 per bag. The maize was then sold at Ksh 1762.50 per bag. The two shared all the money from the sales of the maize in the ratio of their contributions. Calculate the amount that Akinyi got. 4 marks Kenya Certificate of Secondary Education, 2016for free past papers visit: www.freekcsepastpapers.com1522. Using a pair of compasses and ruler only, construct: a i triangle ABC in which AB 5 cm, ABAC 30 and AABC 105 . 3 marks ii a circle that passes through the vertices of the triangle ABC. Measure the radius. 3 marks iii the height of triangle ABC with AB as the base. Measure the height. 2 marks b Determine the area of circle that lies outside the triangle correct to 2 decimal places. 2 marks 916016Kenya Certificate of Secondary Education, 2016121 1Turn overfor free past papers visit: www.freekcsepastpapers.com1623. The equation of a curve is y 2x3 3x2. A Find: i the x-intercept of the curve: ii the y-intercept of the curve. B i Determine the stationary points of the curve. Ii For each point in b i above, determine whether it is a maximum or a minimum. C Sketch the curve. Kenya Certificate of Secondary Education, 2016121 1 2 marks 1 mark 3 marks 2 marks 2 marks 916016for free past papers visit: www.freekcsepastpapers.com17Kenya Certificate of Secondary Education, 2016171 1916016for free past papers visit: www.freekcsepastpapers.com b Calculate the mid-ordinates for five strips between x 1 and x 6, and hence use the mid-ordinate rule to approximate the area under the curve between x 1, x 6 and the x - axis. 3 marks c Assuming that the area determined by integration to be the actual area, calculate the percentage error in using the mid-ordinate rule. |
The equation of a curve is y 2x3 3x2. A Find: i the x-intercept of the curve: ii the y-intercept of the curve. B i Determine the stationary points of the curve. Ii For each point in b i above, determine whether it is a maximum or a minimum. C Sketch the curve. Kenya Certificate of Secondary Education, 2016121 1 2 marks 1 mark 3 marks 2 marks 2 marks 916016for free past papers visit: www.freekcsepastpapers.com17Kenya Certificate of Secondary Education, 2016171 1916016for free past papers visit: www.freekcsepastpapers.com b Calculate the mid-ordinates for five strips between x 1 and x 6, and hence use the mid-ordinate rule to approximate the area under the curve between x 1, x 6 and the x - axis. 3 marks c Assuming that the area determined by integration to be the actual area, calculate the percentage error in using the mid-ordinate rule. 4 marks THIS IS THE LAST PRINTED PAGE.Kenya Certificate of Secondary Education, 2016for free past papers visit: www.freekcsepastpapers.com. |
K.C.S.E YEAR 2010 PAPER 2SECTION A 30 marks Answer all the questions in this section in the spaces provided1Name the causal agent of anaplasmosis disease in cattle, 1 2 mark 2 List four materials that can be used in constructing a Kenya Top Bar Hive. 2 marks 3 a Name two breeds of dairy cattle that originated from the Channel Islands. 1 mark b Give the distinguishing colour for each of the following breeds of livestock: i chinchilla rabbit; 1 2 mark ii toggenburg goat. 1 2mark 4 State four reasons for castration in pig production. 2 marks 5State four characteristics of roughage livestock feeds. 2 marks 6State two functions of the crop in poultry digestive system. I mark 7State four roles of worker bees in a colony. 2 marks 8Give four reasons for controlling livestock diseases. 2 marks 9 State two control measures for fowl pox disease in poultry.10State one function for each of the following: a shovel; 2. Mark b strip cup. 11 2mark 11Give three reasons for carrying out maintenance practices on a mower 11 2 marks 12 Give three limitations of using solar power on the farm. 1 2 marks 13Why is it important to have a thermostat on a cooling system of a tractor engine? 1 mark 14Give two advantages of using a disc plough over a mouldboard plough in primary cultivation. 1 mark 15Name four tools that are used when laying concrete blocks during construction of a wall. 2 marks 16Why is it necessary to have guard rails in a farrowing pen? 1 mark 17 Give two reasons for having a footbath in a cattle dip. 1 mark 18 Distinguish between the following practices as used in livestock production; a crutching and ringing in sheep management; 2 marks b cropping and harvesting in fish farming. 2 marks 19 Give three ways in which infectious diseases can spread from one livestock to another within a farm. 1Vimarks SECTION B 20 marks Answer all the questions in this section in the spaces provided,20The following illustrations show the behaviour of chicks in a brooder. |
11 2mark 11Give three reasons for carrying out maintenance practices on a mower 11 2 marks 12 Give three limitations of using solar power on the farm. 1 2 marks 13Why is it important to have a thermostat on a cooling system of a tractor engine? 1 mark 14Give two advantages of using a disc plough over a mouldboard plough in primary cultivation. 1 mark 15Name four tools that are used when laying concrete blocks during construction of a wall. 2 marks 16Why is it necessary to have guard rails in a farrowing pen? 1 mark 17 Give two reasons for having a footbath in a cattle dip. 1 mark 18 Distinguish between the following practices as used in livestock production; a crutching and ringing in sheep management; 2 marks b cropping and harvesting in fish farming. 2 marks 19 Give three ways in which infectious diseases can spread from one livestock to another within a farm. 1Vimarks SECTION B 20 marks Answer all the questions in this section in the spaces provided,20The following illustrations show the behaviour of chicks in a brooder. Study them carefully andanswer the questions that follow. A Explain the cause of behaviour observed in chiefs for each of the illustrations labeled A, B and C. 3 marks b Give a reason for making the brooder wail round in shape. 1 mark 21 The diagram below shows the reproductive system of a cow. Study it carefully and answer the questions that follow. A Name the parts labelled F and H, b Give two functions of the part labelled G 2 marks . C Give the role of the part labelled J. 2 marks Below are diagrams of internal parasites. Study them carefully and answer the questions that follow. ASource ofSource ofheatLRiC ! CSourceof heatChicks a Identify the parasites labelled K and L. b Name the developmental stage of the parasite labelled K in cattle muscles. 1 2 mark c Outline the procedure of handling a heifer when administering a liquid deworming drug to control theparasites illustrated above. 2 1 2marks 23 Below is a diagram of a farm structure for storing grains. |
C Give the role of the part labelled J. 2 marks Below are diagrams of internal parasites. Study them carefully and answer the questions that follow. ASource ofSource ofheatLRiC ! CSourceof heatChicks a Identify the parasites labelled K and L. b Name the developmental stage of the parasite labelled K in cattle muscles. 1 2 mark c Outline the procedure of handling a heifer when administering a liquid deworming drug to control theparasites illustrated above. 2 1 2marks 23 Below is a diagram of a farm structure for storing grains. Study it carefully and answer thequestions thatfollow. A Identify the farm structure illustrated above. B State the function of the part labelled M. 1 2 mark c State two maintenance practices that should be carried out on the farm structure illustrated above inreadiness for grain storage. 1 mark 23. Below is a diagram of a knapsack sprayer. Study it carefully and answer the questionsthat follow. A Name the parts labelled N, P, Q and R. 2 marks b State one function of the part labelled S 1 mark 25. The diagram below illustrates the general shape of a cattle breed. Study it carefullyand answer the questions that follow. A Identify the type of breed illustrated by the above shape 1 2 mark b Give an example of a breed in a above. 1 2 mark c State four physical characteristics of the type of breed identified in a above. 2 marks SECTION C 40 marks Answer any two questions from this section in the spaces provided after question 28.26 a Outline five advantages of artificial insemination in cattle management. 5 marks b Describe ten signs of trypanosomiasis Nagana disease in livestock. |
A Name the parts labelled N, P, Q and R. 2 marks b State one function of the part labelled S 1 mark 25.The diagram below illustrates the general shape of a cattle breed. Study it carefullyand answer the questions that follow. A Identify the type of breed illustrated by the above shape 1 2 mark b Give an example of a breed in a above. 1 2 mark c State four physical characteristics of the type of breed identified in a above. 2 marks SECTION C 40 marks Answer any two questions from this section in the spaces provided after question 28.26 a Outline five advantages of artificial insemination in cattle management. 5 marks b Describe ten signs of trypanosomiasis Nagana disease in livestock. 10marks c Explain five functions of water in nutrition. 5marks 27 a State the function of any six parts of a zero grazing unit in dairy farming. 6marks b Explain how the power transmitted from a tractor engine is made available for use on thefarm under the following subheadings: i propeller shaft; 2marks ii power take off P.T.O shaft; 2marks iii hydraulic system. 2marks Head c Explain eight ways in which ticks can be controlled on a livestock farm. 8marks 28 a Describe ten physical characteristics a poultry farmer would use to identify poor layers from aflock of hens. 10marks b i Outline three characteristics of clean milk. 3 marks ii Explain seven factors that affect milk composition in dairy fanning. 7 marks. |
They kept animals cattle goats sheep which provided meat milk for food v. They practiced fishing in the Indian Ocean rivers in order to enrich their diet vi. They traded with their neighbours Arabs Akamba in order to obtain what they did not produce vii. They mined salt which was used for domestic purposes viii. They practiced iron working black smithing making weapons tools which they used for defense other purposes ix. They gathered wild fruits honey to supplement their food Any 5 x 2 10 marks Access free revision content at www.freekcsepastpapers.com19. A Give five levels of colonial administration in Kenya. FORM 3 TOPIC 2 ESTABLISHMENT OF COLONIAL RULE IN KENYA i. Village ii. Sub-location iii. Division iv. District v. Province vi. Colony Any 5 x 1 5 marks b Discuss five problems faced by workers during the construction of the Uganda Railway. FORM 3 TOPIC 4 SOCIAL AND ECONOMIC DEVELOPMENTS IN KENYA DURING THE COLONIAL PERIOD i. Rugged expansive terrain along the highlands mountains made the construction take long to complete ii. Delay in the delivery of materials equipment slowed down construction work iii. Harsh adverse climatic conditions across the coastal plains caused many deaths to workers iv. Scarcity of essential supplies food water medicine caused suffering among workers v. Attack by tropical diseases small pox malaria jiggers weakened the workers vi. Attack by wild animals of Tsavo created fear among the workers vii. Hostilities by some African Communities who were against alienation of their land for railway construction viii. Strained huge shortage of labourers Any 5 x 2 10 marks 20. A Give five achievements of the early political associations in Kenya up to 1939. FORM 3 TOPIC 5 POLITICAL DEVELOPMENTS AND THE STRUGGLE FOR INDEPENDENCE IN KENYA i. They aired African grievances to the colonial government ii. They created awareness awakened Africans on their rights iii. They publicized the plight of Africans under British imperialism to the international community iv. They promoted nationalism national unity among African communities v. They fought for the welfare of African workers better wages working conditions vi. |
FORM 3 TOPIC 2 ESTABLISHMENT OF COLONIAL RULE IN KENYA i. The British enlisted services of the Wanga agents to administer Western Kenya ii. The Wanga allowed Imperial British East African Company IBEAC to establish a base at Mumias which served as its headquarters iii. The Wanga lost their independence as colonial rule was established iv. Enmity between the Wanga and other Abaluhya sub-tribes as they felt the Wanga were betraying their course Access free revision content at www.freekcsepastpapers.comv. Mumia was declared the paramount chief of the Wanga allowing his influence to extend to Bunyala Gem Ugenya Alego vi. The Wanga warriors became agents of the British colonialism used to subdue the other resisting communities mercenaries vii. The Wanga received material wealth for their collaboration through trade viii. It led to the expansion of the Wanga kingdom as it acquired more territories Samia Busoga Bunyala ix. Acquisition of firearms other exotic commodities which raised the status of King Mumia x. It led to the introduction of Western education religion from the British Any 5 x 2 10 marks SECTION C 30 marks Answer any two questions from this section in the space provided 22. A Five elective positions in a general election in Kenya. FORM 3 TOPIC 8 FORMATION, STRUCTURE AND THE FUNCTIONS OF THE GOVERNMENT OF KENYA i. President ii. Constituency Representative Member of National Assembly iii. Senator iv. Governor v. County Woman Representative vi. Member of County Assembly Any 5 x 1 5 marks b Limitations of parliamentary supremacy in Kenya. FORM 3 TOPIC 8 FORMATION, STRUCTURE AND THE FUNCTIONS OF THE GOVERNMENT OF KENYA i. It may be side stepped when the president declares a state of emergency ii. Its legislative function is bound by international laws treaties conventions agreements ratification of international treaties laws iii. Its legislative authority oversight role may be undermined by a strong Cabinet iv. Legislation by county government may also undermine parliamentary supremacy v. Effectiveness of passing some legislation may be undermined by social cultural practices beliefs of the people vi. |
Its legislative authority oversight role may be undermined by a strong Cabinet iv. Legislation by county government may also undermine parliamentary supremacy v. Effectiveness of passing some legislation may be undermined by social cultural practices beliefs of the people vi. It cannot pass laws legislation which contravenes the Constitution of Kenya Any 5 x 2 10 marks Access free revision content at www.freekcsepastpapers.com23. A State three circumstances which may cause the office of the County Governor to become vacant in Kenya. FORM 4 TOPIC 7 DEVOLVED GOVERNMENT i. If the governor dies ii. If the governor is impeached iii. If the governor resigns iv. If the governor is mentally incapacitated becomes insane v. If the County Government is dissolved by the president vi. If he she is convicted of an offence which attracts an imprisonment of at least 12 months vii. Due to gross violation of the constitution viii. If he she ceases to be eligible to be elected a County Governor Bankrupt Any 3 x 1 3 marks b Six functions of the President of the Republic of Kenya. FORM 3 TOPIC 8 FORMATION, STRUCTURE AND THE FUNCTIONS OF THE GOVERNMENT OF KENYA i. He she presides over public national days labour day Madaraka Day Jamhuri Day: where the country s achievements are celebrated ii. He she chairs cabinet meetings where government policies are formulated directs and coordinates he functions of ministers iii. He she addresses opening of each newly elected parliament where he she outlines the government agenda iv. He she participates in law making legislation by signing assenting bills into law v. He she is the head of state government hence represents the country at local international level vi. He she nominates appoints with approval of parliament, senior public officers who assist in governing the country such as Cabinet secretaries Attorney General ambassadors vii. He she confers honors medals to persons who have given distinguishes service to the nation viii. He she exercises the Power of Mercy through pardoning persons convicted of various minor offences ix. He she defends the constitution by ensuring adherence to the rule of law x. He she, once a year gives report address to the nation on the progress state of the nation on achievements in realization of national values xi. He she ensures fulfillment of international obligations treaties by relevant government departments xii. |
He she defends the constitution by ensuring adherence to the rule of law x.He she, once a year gives report address to the nation on the progress state of the nation on achievements in realization of national values xi. He she ensures fulfillment of international obligations treaties by relevant government departments xii. He she receives foreign diplomats accredited to the country Access free revision content at www.freekcsepastpapers.comxiii. He she can declare a state of emergency and with the approval of parliament can declare war Any 6 x 2 12 marks 24.a Identify three funds into which the Government of Kenya deposits its revenue. FORM 4 TOPIC 8 PUBLIC REVENUE AND EXPENDITURE IN KENYA i.Consolidated fund ii. Revenue fund iii. Contingencies fund iv. Equalization fund Any 3 x 1 3 marks b Discuss six taxes levied by the National Government of Kenya. FORM 4 TOPIC 8 PUBLIC REVENUE AND EXPENDITURE IN KENYA i.Excise duty which is charged on goods that are locally produced sold within the country ii. Value added tax VAT which is paid to specific goods such as petroleum products sugar electronic equipment iii. Investment revenue which is generated by government bodies parastatals like KPLC Postal Corporation Kenya Railway iv. Trading licenses paid by traders wishing to operate businesses those operating businesses v.Land rates paid by citizens companies as stamp duty rent standing premium on plots land adjudication court case fees vi. Loan interest receipts from government bodies agencies that pay interest on money advanced to them by the exchequer vii. Court fines which are charged on persons found guilty by courts of law viii. Tourism fees which are paid by local foreign tourists as entrance fees into game reserves national parks other tourist attraction sites ix. Domestic borrowing where the government raises revenue through sale of treasury bills bonds x.House rates rent paid for the use hire of government buildings facilities xi. Customs duty which is tax levied on goods imported into the country export xii. Traffic revenue tax levied on traffic related services like driving licenses airport tax road maintenance levy Any 6 x 2 12 marks Access free revision content at www.freekcsepastpapers.com. |
1 mark 4 Name one early Christian missionary who worked in Kenya. 1 mark 5 State two characteristics of independent churches in Kenya during the colonial period. 2 marks 6 Identify the constitutional change that increased the number of African members tothe legislative council in Kenya in 1957. 1 mark 7 Identify one Asian who took part in the struggle for independence in Kenya. 1 mark 8 Name one African political party whose leaders attended the 2nd Lancaster HouseConference in 1962. 1 mark 9 Identify two Educational Commissions appointed by the government of independentKenya to review the education system. 2 marks 10 Give the main reason why the government of Kenya introduced the ConstituencyDevelopment Fund CDF . 1 mark 11 State two ways in which the government has promoted the culture of the people ofKenya since independence. 2 marks 12Identify two conditions that one must fulfil in order to register as a voter in Kenya. 2 marks 13Give two special courts in Kenya. 2 marks 14State two duties of the leader of Government Business in parliament in Kenya. 2 marks 15Identify two symbols of national unity in Kenya. 2 marks 16Give two reasons' that can make a registered person to lose citizenship in Kenya, 2 marks 17Give one type of human rights. 1 mark For More Free KCSE past papers visit www.freekcsepastpapers.comSECTION B 45 marks Answer any three questions from this section in the answer booklet provided.18 a Give five reasons which influenced the migration of the Plains Nilotes to Kenyaduring the pre-colonial period. 5 marks b Explain five results of the migration and settlement of the Maasai inKenyaduring the pre-colonial period. 10 marks 19 a Give three reasons why the early visitors came to the Kenyan-coast before 1500 A.D. 3 marks b Explain six factors that contributed to the development of trade between the Kenyancoast and the outside world by 1900. 12 marks 20 a State three socio-economic reasons why Britain colonized Kenya in the 19thCentury. 3 marks b Explain six factors that contributed to the formation of political associations in Kenyabefore 1939. 12 marks 21 a State three ways in which the government of Kenya facilitated the acquisitionof land for Africans after 1963. 3 marks b Explain six challenges facing the agricultural sector in Kenya. 12 marks SECTION C 30 marks Answer any two questions from this section in the answer booklet provided.22 a Give the structure of the provincial administration in Kenya. 5 marks b Describe five functions of the president of the Republic of Kenya. 10 marks 23 a Give three reasons why the constitution is important in Kenya.,. 3 marks b Explain six factors that may undermine the administration of justice inKenya. 12 marks 24 a Identify five stages in the preparation of the national budget. 5 marks b Explain why it is important for the Government to prepare the nationalbudget annually 10 marks For More Free KCSE past papers visit www.freekcsepastpapers.com. |
A Name the parts labelled A, 5 marks Recon at esoF b State the function ofthe structures labelled E and F. mark F Inthe photograph label the structure where vitamin K is prosuced 1 mark Name the sex of the mammal in the photograph. 1 mark i Givea reason for your answer in 4 i above. U mark The actual length of the dissecting scissors i the photograph is 15 em. Calculate the magnification of the photograph. Marks Gi Calculate the actual length of the mammal from the tip of the nose 10point X on the tail 2 marks 2 You are provided with substances labelled , T, U, X and . ,. T and U are Foodsubstances, while X is 10 sodium hydroxide solution and Y is 1 copper sulphatesolution. Carry out tests to determine the food substance s in ,T and U, 9 marks Foodsubstancebeing testedfor lSubstance Procedure Observations ConclusionobBelow are photographs. SEE SPECIMEN L a SPECIMEN N SPECIMEN Mw SPECIMEN P SPECIMEN QFor more great stuff click or visit:www.changeyourT.comwww.arimifoods.com. |
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2213.23COMPUTER STUDIES 451 3.23.1 Computer Studies Paper 1 451 1 For More Free KCSE Past papers Visit www.freekcsepastpapers.com222For More Free KCSE Past papers Visit www.freekcsepastpapers.com223For More Free KCSE Past papers Visit www.freekcsepastpapers.com224For More Free KCSE Past papers Visit www.freekcsepastpapers.com225For More Free KCSE Past papers Visit www.freekcsepastpapers.com2263.23.2 Computer Studies Paper 2 451 2 For More Free KCSE Past papers Visit www.freekcsepastpapers.com227For More Free KCSE Past papers Visit www.freekcsepastpapers.com228For More Free KCSE Past papers Visit www.freekcsepastpapers.com229For More Free KCSE Past papers Visit www.freekcsepastpapers.com230For More Free KCSE Past papers Visit www.freekcsepastpapers.com. |
THE KENYA NATIONAL EXAMINATIONS COUNCILKenya Certificate of Secondary Education233 1 CHEMISTRY Paper 1 THEORY Nov. 2019 - 2 hoursName Index Number ... Candidate's Signature Date Instructions to candidates a Write your name and index number in the spaces provided above. Sign and write the dote of examination in the spaces provided above. C Answer all the questions in the spaces provided in the question paper. D KNEC mathematical tables and silent non-programmable electronic caleulators may be used. E All working must be clearly shown where necessary. 9. This paper consists of 16 printed pages. G Candidates should check the question paper to ascertain that all the pages are printed asindicated and that no questions are missing. H Candidates should answer the questions in English. For Examiner's Use Only ifil2 slals e 7 s " 13 14 15 16 a7 ae 19 20 21 22 23 24 25 26 27 28 29 Gana Foe Total 2019 The Kenya National Examinations Council2a919234 Turn over21, Anatom of element A has mass number 39 and 19 protons. 2 Write the electron arrangement ofthe atom. State the period and group to which element A belongs. Group 4 markPeriod mark State whether the element is a metal or a non-metal 0 mark,2. Describe how an increase in concentration increases the rate ofa reaction. Marks 3. The flow chart in Figure 1 represents some stages in the extraction of copper metal Study it andanswer the questions that follow. Crush Fine copper Process Concentratedore powder copper oreRoast in airSolid Cus, Feo Silicon tVv and SO; oxide SlagFigure 1Kenya Certificate of Secondary Education, 2019919234 23 1 a Tent: the copper ore. 0 mark i process B .. so . 4 matk i solid mark Write an equation for the reaction that forms the slag. 0 mark 4. |
B Explain six challenges facing local authorities in Kenya. 12marks HISTORY PAPER 2QUESTIONSSECTION A 25 marks Answer all the questions in this section in the answer booklet provided.1Give two archaeological sources of information on History and Government. 2 marks 2Give two reasons that made early human beings to live in groups during theStones Age period. 2 marks 3Identify two ways through which early agriculture spread in Africa. |
B Explain six challenges facing local authorities in Kenya. 12marks HISTORY PAPER 2QUESTIONSSECTION A 25 marks Answer all the questions in this section in the answer booklet provided.1Give two archaeological sources of information on History and Government. 2 marks 2Give two reasons that made early human beings to live in groups during theStones Age period. 2 marks 3Identify two ways through which early agriculture spread in Africa. 2 marks 4State two limitations of using animal transport. 2 marks 5Why was silent trade practiced by Trans-Sahara traders? 1 mark 6Identify the main factor that led to the growth of the Ancient town of Meroe. 1mark 7What was the main function of the Council of elders among African societiesduring the pre-colonial period? 1mark 8State two social factors that led to the scramble for colonies in Africa byEuropean powers. 2marks 9Name one African country that was not colonized by the European powers 1mark 10 State two roles played by the African chiefs in British Colonial Administration inNigeria. 2 marks For More Free KCSE past papers visit www.freekcsepastpapers.com11 Name the Chartered company that administered Zimbabwe during the process ofcolonization. 1 marks 12 Give the main reason for the formation of the League of Nations in 1919. 1mark 13 Give two economic reasons for the growth of African Nationalism in Ghana. 2 marks 14 Outline two factors that enabled Tanzania to maintain national unity sinceindependence. 2 marks 15 What is veto power as used by the United Nations? 1 mark 16 Name one major political party in the United States on America. 1 mark 17 Name one type of election held for the House of Commons in Britain 1mark SECTION B 45 marks Answer any THREE questions from this section in the answer booklet provided.18 a Give three physical characteristics of the Homo erectus 3marks b Explain six cultural practices of Homo sapiens during the New Stone Age. 3 marks 19 a State three disadvantages of coal as a source of energy 3marks b Explain six effects of the Scientific inventions on industry. 12marks 20 a State three factors that contributed to the development of the TransAtlanticTrade. 3 marks b Explain six negative effects on Trans-Atlancic trade on AfricaCommunities. 12 marks 21 a State three factors that enabled European power to colonize Africa in thelate19th Century. 3 marks b Explain six effects of the partition of Africa on the Africans. |
B Explain six challenges facing local authorities in Kenya. 12marks HISTORY PAPER 2QUESTIONSSECTION A 25 marks Answer all the questions in this section in the answer booklet provided.1Give two archaeological sources of information on History and Government. 2 marks 2Give two reasons that made early human beings to live in groups during theStones Age period. 2 marks 3Identify two ways through which early agriculture spread in Africa. 2 marks 4State two limitations of using animal transport. 2 marks 5Why was silent trade practiced by Trans-Sahara traders? 1 mark 6Identify the main factor that led to the growth of the Ancient town of Meroe. 1mark 7What was the main function of the Council of elders among African societiesduring the pre-colonial period? 1mark 8State two social factors that led to the scramble for colonies in Africa byEuropean powers. 2marks 9Name one African country that was not colonized by the European powers 1mark 10 State two roles played by the African chiefs in British Colonial Administration inNigeria. 2 marks For More Free KCSE past papers visit www.freekcsepastpapers.com11 Name the Chartered company that administered Zimbabwe during the process ofcolonization. 1 marks 12 Give the main reason for the formation of the League of Nations in 1919. 1mark 13 Give two economic reasons for the growth of African Nationalism in Ghana. 2 marks 14 Outline two factors that enabled Tanzania to maintain national unity sinceindependence. 2 marks 15 What is veto power as used by the United Nations? 1 mark 16 Name one major political party in the United States on America. 1 mark 17 Name one type of election held for the House of Commons in Britain 1mark SECTION B 45 marks Answer any THREE questions from this section in the answer booklet provided.18 a Give three physical characteristics of the Homo erectus 3marks b Explain six cultural practices of Homo sapiens during the New Stone Age. 3 marks 19 a State three disadvantages of coal as a source of energy 3marks b Explain six effects of the Scientific inventions on industry. 12marks 20 a State three factors that contributed to the development of the TransAtlanticTrade. 3 marks b Explain six negative effects on Trans-Atlancic trade on AfricaCommunities. 12 marks 21 a State three factors that enabled European power to colonize Africa in thelate19th Century. 3 marks b Explain six effects of the partition of Africa on the Africans. 12 marks SECTION C 30 marks Answer TWO questions from these from this section in the answer booklet provided.22 a Give three functions of the Kabaka of Buganda Kingdom during the precolonialPeriod. 3 marks b Describe the political organization of the Shona during the pre-colonialperiod. 12 marks 23 b Identify five ways through which the United Nations UN promotesGood governance in the world. 5 marks b Explain five achievements of the Non-Aligned Movement NAM since itsFor More Free KCSE past papers visit www.freekcsepastpapers.comFormation . 10 marks 24 a State three objectives for the formation of Common Market for Easter and Southern Africa COMESA . 3 marks b Explain six Challenges facing the Common Market for Eastern andSouthernAfrica COMESA . 12 marks For More Free KCSE past papers visit www.freekcsepastpapers.com. |
THE KENYA NATIONAL EXAMINATIONS COUNCILKenya Certificate of Secondary Education231 1 BIOLOGY Paper 1Nov. 2019 - 2 hours Candidate's Signature Instructions to candidates a Write your name and index number in the spaces provided above. 6 Sign and write the date of examination in the spaces provided above, c Answer all the questions in this question paper. A All answers must be writen in the spaces provided. E This paper consists of 11 printed pages. F Candidates should check the question paper to ascertain that all the pages are printed asindicated and that no questions are missing. G Candidates should answer the questions in English. A 2 3 4 s 6 7 8 9 40 11 42 23 44 45 16 47 18 19 20 21 22 Grand Total 2019 The Kenya National Examinations Councilaan919291 Turn over2Answer all the questions n the spaces provided,1, Name the characteristic of living organisms illustrated by each of the activities described below: a Dressing heavily 1 mark b Bursting of the sporangium in the Rhizopus sp 1 mark Besides venation, state two other external characteristics of leaves that can be used toclassify plants 2 marks b Explain why the bat is classified as a mammal yeti flies. 2 marks 3. The diagram below illustrates a specialised cell obtained from a certain tissue. Name the cel 1 mark b State two ways in which the cell i structurally adapted to its function. 2 marks Kenya Certificate of Secondary Education, 2019919291 BUI34. In investigating certain physiological process, students set up the apparatus as shown belowand made the observations after 30 minutes as illustrated. Solution F Solution FSoliton E G Sotdtion E GBeginning End Name the physiological process being investigated. 1 mark Account forthe observation made at the end ofthe experiment, B marks State the likely identity of G. 1 mark 5. Explain why significantly increasing the blood pH slows down the rate of selective reabsorption of materials in the kidney tubules G marks 6. A Name the respiratory structure in the amoebe. |
Explain each of the following physiological observations: a sportsmen release little, concentrated urine atthe end of a strenuous exercise 3 marks b rabbit has higher oxygen demand than a camel marks 12, While investigating a certain metabotic process in plant, students set up the apparatus as shown below in a classroom and monitored it for 48 hours. Test ube Lime water a Identify the metabotic process under investigation, 0 mark b Account for the observations made in the test tube atthe end of the investigation. 2 marks Kenya Cerificate of Secondary Education, 2019919291 BUI713. A female human being was found to have an extra sex chromosome in her cells. Give the total number of chromosomes in the female individuals cells mark Explain the possible cause ofthis condition. 2 marks State two physical characteristics observed in the female individual with such acondition. 2 marks 14, Explain why fossil records as evidence of organic evolution are usually incomplete. Marks b Name the:moleculesidence of organic evolution exhibited by occurrence of similar amino acid a range of organisms. Mark Kenya Certificate of Secondary Education, 2019919291 211 Turn over15, a Distinguish between guttation and transpiration. Mark b State the significance of transpiration to a plant. 2 marks 16, State two benefits of mutation in living organisms. 2 marks 17. Below are photographs of two dogs. Explain the possible reason forthe difference inthe length oftheir fur. 2 marks Kenya Certificate of Secondary Education, 2019919291 Bu9 "Name the type of tooth in carnivores mainly used for piercing and killing of preys. 1 mark 19. Below isa diagram of the human digestive system, a Label with on the diagram where enzyme amylase is produced. 2 marks b Besides the digestive role, explain one other function of the part labelled H, 2 marks aTurn overKenya Certificate of Secondary Education, 2019919291 23 11020, State how each of the following features enhance efficient movement of fish in water: a Seale mark b body shape mark 21, Make a diagram ofa simple, bilobed leaf witha serrated margin. |
1 mark 19.Below isa diagram of the human digestive system, a Label with on the diagram where enzyme amylase is produced. 2 marks b Besides the digestive role, explain one other function of the part labelled H, 2 marks aTurn overKenya Certificate of Secondary Education, 2019919291 23 11020, State how each of the following features enhance efficient movement of fish in water: a Seale mark b body shape mark 21, Make a diagram ofa simple, bilobed leaf witha serrated margin. Marks 22, The chart below illustrates how respiratory gases ae transported in the human blood. Haemoglobin Gas P Oxyhaemoglobin GasQL Carboxyhaemoglobin Identify gas Q. mark Explain the advantage oxyhaemoglobin has over carboxyhaemoglobin. Marks Kenya Certificate of Secondary Education, 2019919291 23 1 3 marks 24, a Plasmodium vivax and Plasmodium ovale are transmitted by a mosquito. State with areason whether the two organisms can interbreed. Marks Explain the evolutionary basis forthe ever changing drugs for malaria treatment. 2 marks 25, State one characteristic of muscles responsible for each of the following: peristaltic movement 0 mark b movement of limbs 1 mark THIS IS THE LAST PRINTED PAGE.Kenya Certificate of Secondary Education, 2019919291 2301. |
THE KENYA NATIONAL EXAMINATIONS COUNCIL,Kenya Certificate of Secondary Education233 2 CHEMISTRY Paper 2 THEORY Nov. 2019 - 2 hoursName .. Index Number Candidate's Signati Date Instructions to candidates a Write your name and index number in the spaces provided above. 0 Sign and write the date of examination in the spaces provided above, c . Answer allthe questions in the spaces provided. A KNEC mathematical tables and silent non-programmable electronic calculators may be used. 6 All working must be clearly shown where necessary. 0 This paper consists of 15 printed pages. G Candidates should check the question paper to ascertain that all the pages are printed asindicated and that no questions are missing. H Candidates should answer the questions in English For Examiner's Use Only Maximum Candidate'sScore Sore 22nLC nTotal Score 80 Question slolalale nla 2019 The Kenya National Examinations Council23372919252 Turn over 9192822Allkanes are said to be saturated hydrocarbons. What is meant by saturated hydrocarbons. 1 mark Gi Draw the structure ofthe third member of the alkane homologous series andname it. Marks When the alkane, hexane, is heated to high temperature, one of the products is ethene. Write the equation for the reaction. 0 mark Gi Name the process described in b . I mark Study the flow chart in Figure 1 and answer the questions that follow. FDilute sodiumhydroxideDehydration Oxidationee Ethanoic acidPate Warmethanol Figure 1Kenya Certificate of Secondary Education, 20192393 2 9 Weatfy A. i mark State one physical property of B. 0 mark Gi Draw the structure of D. mark Give a reason why D polfutes the environment. 1 marke 0 Write an equation for the formation of F. mark Describe an experiment which can be used to distinguish butene from butanol. 2 marks Kenya Certficare of Secondary Education, 201923 2919252 Turn over42 Zinc occurs mainly as zinc blende. Name one other ore from which zine can beextracted. |
Mark Describe an experiment which can be used to distinguish butene from butanol. 2 marks Kenya Certficare of Secondary Education, 201923 2919252 Turn over42 Zinc occurs mainly as zinc blende. Name one other ore from which zine can beextracted. Mary b The flow chart in Figure 2 shows the various stages in the extraction of zine metal, Study it and answer the questions that follow. Zine blende Coke Limestone Motos tea 200 ZnRoasting Bast 1S! Condenser DistillerChamber Fumace tt Slag Molten lead Pure ZineFigure 2 Write an equation forthe reaction which occurs in the roasting chamber. 1 mark ii Describe the process that takes place in the blast furnace. Marks iii Explain why molten lead is added to the condenser. 0 mark Kenya Certificate of Secondary Education, 2019919282 2332 iv State two uses of zine. Q mark Give one reason why the extraction of zinc causes pollution to the environment. 1 mark Explain the observations made when zine metal is added to hot sodium hydroxide. 2 marks Kenya Certificate of Secondary Education, 2019233 2919252 Turn over63. Figure 3 is flow chart that shows the process that occurs in the manufacture ofnitrie V acid,Pr Q air s t airLie seid Figure3 Name substance P,Q, R and S. Pr . 1 mark Q mark R on mark s ses mark b To obtain substance R, ammonia is heated at 900 C in the presence of air and a catalyst The product is then cooled in air. Name the catalyst forthe reaction, 1 mark ii Write the equations forthe two reactions described in b . 2 marks Kenya Cerificate of Secondary Education, 2019919252 2392 9192827 Gi Other than nitre V acid, name another product that is formed. Q mark When ammonia is reacted with ntrie V acid, it produces a nitrogenous fertiliser. Explain why fertilisers play a major role in food production. |
Pr . 1 mark Q mark R on mark s ses mark b To obtain substance R, ammonia is heated at 900 C in the presence of air and a catalyst The product is then cooled in air. Name the catalyst forthe reaction, 1 mark ii Write the equations forthe two reactions described in b . 2 marks Kenya Cerificate of Secondary Education, 2019919252 2392 9192827 Gi Other than nitre V acid, name another product that is formed. Q mark When ammonia is reacted with ntrie V acid, it produces a nitrogenous fertiliser. Explain why fertilisers play a major role in food production. 2 marks i State two problems associated with the use of nitrogenous fertilisers. 2 marks Kenya Certificate of Secondary Education, 201923372 Turn over4. Explain the following observations:0 The colour of aqueous copper II sulphate fades when a piece of magnesium metal is dropped into the solution. 2 marks Apiece of iron bar is coated with a brown substance when left in the open on arainy day. 2 marks A sample of water is suspected to contain aluminium ions AF . Describe a laboratoryexperiment that can be carried out to show that AD ions are present in the water sample 3 marks 919252 Kenya Certificate of Secondary Education, 2019233 729 Inan experiment to determine the number of moles of water of erystallisation of ahydrated compound, Na,SO, X HO, 5g of the compound were heated strongly to aconstant mass. Explain how a constant mass was obtained marks i During the experiment, the mass ofthe residue was found to be 2.205 8,Determine the number of moles of water of crystallisation in the compound. Na 23.0; 0 160; 32.0; H 1.0 G marks Kenya Certificate of Secondary Education, 2019919282 23972 Turn over105. A What is meant by molar heat of neutralisation? 0 mark b Iman experiment to determine the molar heat of neutralisation, SOcm? |
Describe a laboratoryexperiment that can be carried out to show that AD ions are present in the water sample 3 marks 919252 Kenya Certificate of Secondary Education, 2019233 729 Inan experiment to determine the number of moles of water of erystallisation of ahydrated compound, Na,SO, X HO, 5g of the compound were heated strongly to aconstant mass. Explain how a constant mass was obtained marks i During the experiment, the mass ofthe residue was found to be 2.205 8,Determine the number of moles of water of crystallisation in the compound. Na 23.0; 0 160; 32.0; H 1.0 G marks Kenya Certificate of Secondary Education, 2019919282 23972 Turn over105. A What is meant by molar heat of neutralisation? 0 mark b Iman experiment to determine the molar heat of neutralisation, SOcm? Of IMhhydrochloric acid was neutralised by adding 10cm portions of dilute sodium hydroxide. During the experiment, the data in Table 1 was obtained. Tablet Volume of Sodium o 1 2 3 4 50hydroxide em Temperature of 250 270 290 s10 310 300 290mixture C Write the equation for the reaction inthis experiment, 1 mark Gi On the grid provided, plot a graph of temperature Y-axis against volume ofsodium hydroxide X-axis added. 3 marks Kenya Certificate of Secondary Education, 2019919252 2332Determine from the graph the:1. Volume of sodium hydroxide which completely neutralises 0 cm of IMhydrochloric acid 1 mark IL. Change in temperature, AT, when complete neutralisation occurred. 1 mark iv Caleulate:1. The heat change, AH when complete neutralisation occurred. Specific heat capacity 4.2 Jy" K", density of solution 1.0 gem 2 marks Il. |
Volume of sodium hydroxide which completely neutralises 0 cm of IMhydrochloric acid 1 mark IL. Change in temperature, AT, when complete neutralisation occurred. 1 mark iv Caleulate:1. The heat change, AH when complete neutralisation occurred. Specific heat capacity 4.2 Jy" K", density of solution 1.0 gem 2 marks Il. Molar heat of neutralisation of hydrochloric acid with sodium hydroxide. 1 mark 8 How would the value of molar heat differ if 0 em of IM ethanoic acid was usedinstead of IM hydrochloric acid? Give a reason, 2 marks Kenya Cerificate of Secondary Education, 2019s192s2 23372 Turn overCO o 9192522 What is meant by standard electrode potential of an element? 1 mark Use the standard electrode potentials given below to answer the questions that follow. Reactions BO MnO; aq 8H" ag Se Min aq 411,00 149Me aq e M aq 077N aq 26 NG 034Prag 26 PIs 023Qe 2e 20-18 287Rg 2e 2R- g 136 State whether acidified MnO can oxidise M , Give reason, marks i Select two half-cells which when combined will give the highest em.f. 1 mark Gil Write the cell representation forthe cell formed in b i , 1 mark iv Calculate the E value forthe cell formed in b Kenya Certificate of Secondary Education, 20192332B Amass of 124g ofa divalent metal was deposited when a current of 6A was passed through a solution of the metal sulphate for 12 minutes. Determine the relative atomic mass of the metal. 1 Faraday 96,500 C mol" G marks 4 State two applications of electrolysis, 1 mark Kenya Certificate of Secondary Education, 201923372919282 Turn over47. |
1 mark Gil Write the cell representation forthe cell formed in b i , 1 mark iv Calculate the E value forthe cell formed in b Kenya Certificate of Secondary Education, 20192332B Amass of 124g ofa divalent metal was deposited when a current of 6A was passed through a solution of the metal sulphate for 12 minutes. Determine the relative atomic mass of the metal. 1 Faraday 96,500 C mol" G marks 4 State two applications of electrolysis, 1 mark Kenya Certificate of Secondary Education, 201923372919282 Turn over47. What is meant by rate of reaction, 0 mark Inthe space provided, sketch the diagram of a set-up that can be used to determine therate of reaction between manganese IV oxide and hydrogen peroxide. G marks A student placed a small amount of liquid bromias shown in Figure 4, atthe bottom ofa sealed gas jar of air AirLiquid bromine Figure 4 i Describe what will be observed 1 mark after two minutes IL after 30 minutes Kenya Certificate of Secondary Education, 2019919252 23321sUse the Kinetic theory to explain the observations: 2 marks Lafter 2 minutes UL after 30 minutes ... Some plants have seeds that contain vegetable oil. Describe how the oil can be obtained from the seeds. 3 marks Gi Explain how it could be confirmed that the liquid obtained from the seeds is oil. 1 mark THIS IS THE LAST PRINTED PAGE.Kenya Certificate of Secondary Education, 2019919252 7233 2. |
THE KENYA NATIONAL EXAMINATIONS COUNCIL.Kenya Certificate of Secondary Education121 11 MATHEMATICS Paper1ALTANov. 2019 - 2 hours Index Number .. Candidate's Signature Date .. Instructions to candidates a . Write your name and index number in the spaces provided above. Sign and write the dato of examination in the spaces provided above, c . This paper consists of two sections; Section and Section I a Answer all the questions in Section land any five questions from Section I e Show all the steps in your caleulations, giving your answers at each stage in the spacesprovided below each question. 0. Marks may be given for correct working even if the answer is wrong. 9 Nonprogrammable silent electronic calculators and KNEC Mathematical tables may be used,except where stated otherwise. H This paper consists of 18 printed pages. I Candidates should check the question paper to ascertain that al the pages are printed asindicated and that no questions are missing. Candidates should answer the questions in English. For Examiner's Use OnlySection ti2lalalsfe 7 els rola 13 14 15 16 tora CTT r Section Il 17 18 19 20 21 22 Grand Total 2019 The Kenya National Examinations Couneilran919228 Turn overSECTION I 50 marks Answer all the questions in this section in the spaces provided.1, Without using mathematical tables or a calculator, evaluate:540025x3.6 G marks 2, Express 1728 and 2025 in terms of their prime factors. Hence evaluate:aims Vo02s 4 marks 3. Juma left his home at 8.30am. He drove a distance of 140km and arrived at his aunt s home at10.15am. Determine the average speed, in km h, for Juma s joumey. Marks Kenya Certificate of Secondary Education, 2019919228 pit4. Expand and simplify:4 6 7q-3 . Marks 'S. |
3 marks Kenya Certificate of Secondary Education, 2019919228 wut Turn overSECTION It 50 marks Answer any five questions from this section inthe spaces provided.17, Arectangular water tank measures 2.4m long, 2m wide and 1.5m high. The tank contained some water up toa height of 0.45m, Calculate the amount of water, in lites, needed to fill up the tank. G marks An inlet pipe was opened and water let to flow into the tank at arate of 10 lites per minute, After one hour, a drain pipe was opened and water allowed to flow out of the tankat arate of 4 litres per minuteCalculate: the height of water inthe tank after 3 hours; 4 marks Gi the total time taken to fil up the tank, 3 marks Kenya Certificate of Secondary Education, 2019919228 12918. Aline, L, passes through the points 3,3 and 5,7 . Find the equation of L, in the form y me , where m and care constants G marks b Another line L, is perpendicular to L, and passes through 2,3 . Find: i the equation of L; G marks Gi the xintercept of L, 0 mark Determine the point of intersection of L, and L,, marks Kenya Certificate of Secondary Education, 2019919228 ma Turn over1019. A triangle ABC with vertices A by a reflection in the line y x 1. 2 , B 1,4 and C 1,4 is mapped onto triangle A B C On the grid provided draw: triangle ABC; mari i theliney x41; marks Gi triangle A'B' 2 marks b Triangle A B'C" is the image of triangle A B'C under a negative quarter turn about 0,0 . On the same grid, draw triangle "BC". |
Find: i the equation of L; G marks Gi the xintercept of L, 0 mark Determine the point of intersection of L, and L,, marks Kenya Certificate of Secondary Education, 2019919228 ma Turn over1019. A triangle ABC with vertices A by a reflection in the line y x 1. 2 , B 1,4 and C 1,4 is mapped onto triangle A B C On the grid provided draw: triangle ABC; mari i theliney x41; marks Gi triangle A'B' 2 marks b Triangle A B'C" is the image of triangle A B'C under a negative quarter turn about 0,0 . On the same grid, draw triangle "BC". 3 marks Kenya Certificate of Secondary Education, 2019919228 BV State the type of congruence between triangles: ABCanda B A 1 mark AIBC and ABC 1 mark Kenya Certificate of Secondary Education, 2019919228 Dut Turn over220. The figure below is aright pyramid VEFGH witha square base of 8m and a slant edge of 20 em. Points A, B,C and D lie on the slant edges of the pyramid such that VA VB VC VD 10cm and plane ABCD is parallel to the base EFGH. Find the length of AB. 2 marks b Calculate, correct to 2 decimal places: the length of AC; 2 marks Gi the perpendicular height of the pyramid VABCD. 2 marks Kenya Certificate of Secondary Education, 2019919228 WA1B The pyramid VABCD was cut off Find the volume ofthe frustum ABCDEFGH correct to2 decimal places. |
Find the length of AB. 2 marks b Calculate, correct to 2 decimal places: the length of AC; 2 marks Gi the perpendicular height of the pyramid VABCD. 2 marks Kenya Certificate of Secondary Education, 2019919228 WA1B The pyramid VABCD was cut off Find the volume ofthe frustum ABCDEFGH correct to2 decimal places. 4 marks g Kenya Certificate of Secondary Education, 2019919228 1 Turn over 421, The heights of 40 athletes ina county athletics competition were as shown inthe table below: Height, om Frequency150 159 2160-169 170-179 10160 189 x190-199 6200-209 2 Find the value of x. b State the modal class. Jeulate: the mean height ofthe athletes; i the median height, correct to 1 decimal place, of the athletes. Kenya Certificate of Secondary Education, 2019919228 ah mark 1 mark 4 marks 4 marks 1s22, The figure below represents a triangular flower garden ABC in which AB 4m, BC 5m andZBCA 30 , Point D lies on AC such that BD 4m and 2 BDC is obtuse. A anDtNB a cFind, comecto2 decimal places: 2c masts o 3 marks the length of De; maris the aren ofthe flower garden ABC 2 matts Kenya Certificate of Secondary Education, 2019919228 nt Turn over1623, The shaded region on the graph below shows a piece of land ABCD earmarked for building asub-county hospital Write down the ordinates of curves AB and DC for x 0, 200, 400, 600, 800, 1000 and.1200, 2 marks b Use trapezium rule, with 6 strips to estimate the area of the piece of and ABCD, inhectares, 4 marks Kenya Certificate of Secondary Education, 2019919228 11"7 Use mid-ordinate rule with 3 strips o estimate the area of the piece of land, in hectares, 4 marks Kenya Certificate of Secondary Education, 2019919228 a Turn over24, The equation of a curve is y 3 ? |
2 marks b Calculate, correct to 2 decimal places: the length of AC; 2 marks Gi the perpendicular height of the pyramid VABCD. 2 marks Kenya Certificate of Secondary Education, 2019919228 WA1B The pyramid VABCD was cut off Find the volume ofthe frustum ABCDEFGH correct to2 decimal places. 4 marks g Kenya Certificate of Secondary Education, 2019919228 1 Turn over 421, The heights of 40 athletes ina county athletics competition were as shown inthe table below: Height, om Frequency150 159 2160-169 170-179 10160 189 x190-199 6200-209 2 Find the value of x. b State the modal class. Jeulate: the mean height ofthe athletes; i the median height, correct to 1 decimal place, of the athletes. Kenya Certificate of Secondary Education, 2019919228 ah mark 1 mark 4 marks 4 marks 1s22, The figure below represents a triangular flower garden ABC in which AB 4m, BC 5m andZBCA 30 , Point D lies on AC such that BD 4m and 2 BDC is obtuse. A anDtNB a cFind, comecto2 decimal places: 2c masts o 3 marks the length of De; maris the aren ofthe flower garden ABC 2 matts Kenya Certificate of Secondary Education, 2019919228 nt Turn over1623, The shaded region on the graph below shows a piece of land ABCD earmarked for building asub-county hospital Write down the ordinates of curves AB and DC for x 0, 200, 400, 600, 800, 1000 and.1200, 2 marks b Use trapezium rule, with 6 strips to estimate the area of the piece of and ABCD, inhectares, 4 marks Kenya Certificate of Secondary Education, 2019919228 11"7 Use mid-ordinate rule with 3 strips o estimate the area of the piece of land, in hectares, 4 marks Kenya Certificate of Secondary Education, 2019919228 a Turn over24, The equation of a curve is y 3 ? Determine: the stationary points ofthe curve; G marks Gi the nature ofthe stationary points in a i above. |
2 marks Kenya Certificate of Secondary Education, 2019919228 WA1B The pyramid VABCD was cut off Find the volume ofthe frustum ABCDEFGH correct to2 decimal places. 4 marks g Kenya Certificate of Secondary Education, 2019919228 1 Turn over 421, The heights of 40 athletes ina county athletics competition were as shown inthe table below: Height, om Frequency150 159 2160-169 170-179 10160 189 x190-199 6200-209 2 Find the value of x. b State the modal class. Jeulate: the mean height ofthe athletes; i the median height, correct to 1 decimal place, of the athletes. Kenya Certificate of Secondary Education, 2019919228 ah mark 1 mark 4 marks 4 marks 1s22, The figure below represents a triangular flower garden ABC in which AB 4m, BC 5m andZBCA 30 , Point D lies on AC such that BD 4m and 2 BDC is obtuse. A anDtNB a cFind, comecto2 decimal places: 2c masts o 3 marks the length of De; maris the aren ofthe flower garden ABC 2 matts Kenya Certificate of Secondary Education, 2019919228 nt Turn over1623, The shaded region on the graph below shows a piece of land ABCD earmarked for building asub-county hospital Write down the ordinates of curves AB and DC for x 0, 200, 400, 600, 800, 1000 and.1200, 2 marks b Use trapezium rule, with 6 strips to estimate the area of the piece of and ABCD, inhectares, 4 marks Kenya Certificate of Secondary Education, 2019919228 11"7 Use mid-ordinate rule with 3 strips o estimate the area of the piece of land, in hectares, 4 marks Kenya Certificate of Secondary Education, 2019919228 a Turn over24, The equation of a curve is y 3 ? Determine: the stationary points ofthe curve; G marks Gi the nature ofthe stationary points in a i above. 2 marks b Determine: the equation of the tangent tothe curve at x 1; 3 marks Gi the equation of the normal to the curve atx 1 marks THIS IS THE LAST PRINTED PAGE.Kenya Cerificate of Secondary Education, 2019919228 Riv. |
After Helmer's entrance, the talk is very different in the original version. He remarks upon the painful interview he has just had with Krogstad, whom he is forced to dismiss from the bank; Nora, in a mild way, pleads for him; and the doctor, in the name of the survival of the fittest,1 denounces humanitarian sentimentality, and then goes off to do his best to save a patient who, he confesses, would be much better dead. This discussion of the Krogstad question before Nora has learnt how vital it is to her, manifestly discounts the effect of the scenes which are to follow: and Ibsen, on revision, did away with it entirely. Nora's romp with the children, interrupted by the entrance of Krogstad, stands very much as in the final version; and in the scene with Krogstad there is no essential change. One detail is worth noting, as an instance of the art of working up an effect. In the first version, when Krogstad says, "Mrs. Stenborg, you must see to it that I keep my place in the bank," Nora replies: "I? How can you think that I have any such influence with my husband?"- a natural but not specially effective remark. But in the final version she has begun the scene by boasting to Krogstad of her influence, and telling him that people in a subordinate position ought to be careful how they offend such influential persons as herself; so that her subsequent denial that he has any influence becomes a notable dramatic effect. The final scene of the act, between Nora and Helmer, is not materially altered in the final version; but the first version contains no hint of the business of decorating the Christmas-tree or of Nora's wheedling Helmer by pretending to need his aid in devising her costume for the fancy dress ball. Indeed, this ball has not yet entered Ibsen's mind. He thinks of it first as a children's party in the flat overhead, to which Helmer's family are invited. In the opening scene of the second act there are one of two traits that might perhaps have been preserved, such as Nora's prayer: "Oh, God! Oh, God! Do something to Torvald's mind to prevent him from enraging that terrible man! Oh, God! Oh, God! I have three little children! |
Oh, God! Oh, God! I have three little children! Do it for my children's sake.". Very natural and touching, too, is her exclamation, "Oh, how glorious it would be if I could only wake up, and come to my senses, and cry, 'It was a dream! It was a dream!'". A week, by the way, has passed, instead of a single night, as in the finished play; and Nora has been wearing herself out by going to parties every evening. Helmer enters immediately on the nurse's exit; there is no scene with Mrs. Linden in which she remonstrates with Nora for having as she thinks borrowed money from Dr. Rank, and so suggests to her the idea of applying to him for aid. In the scene with Helmer, we miss, among many other characteristic traits, his confession that the ultimate reason why he cannot keep Krogstad in the bank is that Krogstad, an old schoolfellow, is so tactless as to tutoyer him. There is a curious little touch in the passage where Helmer draws a contrast between his own strict rectitude and the doubtful character of Nora's father. ". I can give you proof of it," he says. ". I never cared to mention it before- but the twelve hundred dollars he gave you when you were set on going to Italy he never entered in his books: we have been quite unable to discover where he got them from.". When Dr. Rank enters, he speaks to Helmer and Nora together of his failing health; it is an enormous improvement which transfers this passage, in a carefully polished form, to his scene with Nora alone. That scene, in the draft, is almost insignificant. It consists mainly of somewhat melodramatic forecasts of disaster on Nora's part, and the doctor's alarm as to her health. Of the famous silk-stocking scene- that invaluable sidelight on Nora's relation with Helmer there is not a trace. There is no hint of Nora's appeal to Rank for help, nipped in the bud by his declaration of love for her. All these elements we find in a second draft of the scene which has been preserved. |
Nora rejects this view, claiming that Torvald and her marriage could not sustain the knowledge of this secret. Mrs. Linde questions Nora as to whether Nora ever plans to tell Torvald. Nora replies that she may some day, if her good looks and charm wear off and she is in need of some compelling way to keepPage 13 Torvald, but not for quite a while. She then launches into a description of how hard it has been to find the money she has needed to repay this loan and how happy she is that she will be free of its burden thanks to Torvald's promotion. The doorbell rings and the maid informs Nora that Krogstad desires to see Torvald. Nora, shocked and worried that Krogstad has come to inform Torvald of Nora's secret, questions Krogstad about his business. Krogstad assures her that it is mere bank business and so Nora assents. Mrs. Linde reveals that she once knew the man. When Krogstad goes into the study, Dr. Rank comes out to chat with Nora and Mrs. Linde. Discussing the human urge to sustain life, Dr. Rank grudgingly admits that he does want to preserve his own despite his physical pain resulting from a disease. He then begins to discourse on the pervasiveness of morally corrupt characters, including Krogstad. Nora feigns ignorance and inquires about Krogstad about whom Dr. Rank only has unflattering reports. Nora suddenly breaks out into laughter. Avoiding a direct reply to the questioning looks of Mrs. Linde and Dr. Rank, she asks if the employees of the bank will be under the power of Torvald after his promotion. She revels in the idea. Still happy, she offers a macaroon to Dr. Rank, falsely claiming that they were a gift from an unaware Mrs. Linde after Dr. Rank expresses surprise knowing that they are forbidden . Nora then impulsively shares with Mrs. Linde and Dr. Rank that there is something that she would very much like to say if Torvald was able to hear: "I'll be damned!". Her companions' reactions are cut short, though, by the emergence of Torvald from the study. Hiding the macaroons, Nora introduces Torvald to Mrs. Linde after he emerges from the study. After the initial introductions and explanation of Mrs. |
Hiding the macaroons, Nora introduces Torvald to Mrs. Linde after he emerges from the study. After the initial introductions and explanation of Mrs. Linde's situation, Torvald agrees to secure a bookkeeping job for her at the bank. Torvald and Dr. Rank then exit followed by Mrs. Linde, who is going off to look for a room. As they are leaving, the nurse enters with the children. The maid leaves for a bit and Nora proceeds to play with her children. While they are engrossed in a game of hide-and-go-seek, Krogstad knocks and half enters the room. The game abruptly stops when his presence is recognized. Nora sends the kids to the Nurse and talks to Krogstad at his request. Krogstad inquires whether Mrs. Linde has been given an appointment at the bank. Nora confirms this and cautions Krogstad to be careful about offending those in power since he is in a subordinate position. Krogstad then asks Nora to use her influence to ensure that he will be able to keep his own position at the bank. Nora is confused and explains that she has no influence on such matters. After making a disparaging remark about Torvald, Krogstad reveals that he is prepared to fight for his position at the bank as if for his life, implying that he will not hesitate to reveal Nora's secret. Torvald explains that his reputation at the bank, sullied by an indiscretion of the distant past, is extremely important to him because it will influence the lot of his maturing sons. Nora again replies that she has no power to influence his status. Krogstad threatens again to reveal her secret to which Nora replies that she is not worried; she believes that Torvald's knowledge would not bring great harm to the family. As a last resort, Krogstad points out the fact that Nora had committed fraud by signing her father's name for him, to which Nora admits. Nora scoffs that surely her indiscretion was not important but Krogstad calls that into question by comparing it to his own problem of the past and the potential reaction of a court of law. Nora is in disbelief that what she sees as an act of love could ever be considered illegal or wrong but is perturbed nonetheless. Krogstad threatens her one last time with legal action and leaves. Page 14 When Krogstad leaves, Nora's children enter. |
Nora is in disbelief that what she sees as an act of love could ever be considered illegal or wrong but is perturbed nonetheless. Krogstad threatens her one last time with legal action and leaves. Page 14 When Krogstad leaves, Nora's children enter. Nora tells them not to mention Krogstad's visit to Torvald and reneges on her earlier promise to play with them, shooing them away. She then busies herself with needlework and asks for the Christmas tree. While Nora is dressing the tree and talking the problem out aloud to herself, Torvald returns and questions whether Krogstad has visited. After first denying it, Nora admits to the meeting because Torvald tells her that he believes that she is acting out of pity for a man who has come begging her to put a good word in for him to Torvald. Torvald reprimands her for participating in a lie and dealing with a man of questionable character. He then dismisses the subject. Nora, still dressing the tree, weaves a conversation that alternates between discussing the approaching fancy-dress ball and asking for Torvald's help with it and Krogstad. Torvald finally takes the bait and reveals that he plans to dismiss Krogstad because he despises Krogstad's character. Divulging that Krogstad's past indiscretion had been a forgery, Torvald admits that he would have forgiven the man had Krogstad owned up to his lie. Instead, Torvald vigorously condemns the lie that Krogstad used to escape his problem, claiming that Krogstad's hypocrisy is treacherous because it even infects his family; Torvald even goes so far as to claim that each breath that Krogstad takes necessarily pollutes his home and children. Nora mildly questions this and Torvald replies that he has often seen this sort of thing. In fact, Torvald claims that all children who go bad do so as a result of bad mothering and perhaps fathering . Telling Nora never to pled Krogstad's case again, Torvald says that he would be unable to work with Krogstad because Torvald becomes physically ill in his presence. Nora is agitated and comments on how hot she is. Torvald, oblivious, goes off to his study to take care of business while Nora whispers to herself that the situation cannot be real. |
Telling Nora never to pled Krogstad's case again, Torvald says that he would be unable to work with Krogstad because Torvald becomes physically ill in his presence. Nora is agitated and comments on how hot she is. Torvald, oblivious, goes off to his study to take care of business while Nora whispers to herself that the situation cannot be real. The Nurse asks if the children can come in and play, to which Nora strongly refuses. Left alone, Nora is pale with terror and wonders if she can really be depraving her children. As the act closes, Nora tosses her head and states that these fears cannot be true. Analysis: Act I, in the tradition of the well made play in which the first act serves as an exposition, the second an event, and the third an unraveling though Ibsen diverges from the traditional third act by presenting not an unraveling, but a discussion , establishes the tensions that explode later in the play. Ibsen sets up the Act by first introducing us to the central issue: Nora and her relation to the exterior world Nora entering with her packages . Nora serves as a symbol for women of the time; women who were thought to be content with the luxuries of modern society with no thought or care of the world in which they lived. Indeed, there is some truth in this the extent of this is debatable . As the play reveals, Nora does delight in material wealth, having been labeled a spendthrift from an early age. She projects the attitude that money is the key to happiness. By presenting this theme of the relationship between women and their surroundings at the beginning, Ibsen indicates to the reader that this is the most basic and important idea at work in the play. However, it is also clear that Nora's simplistic approach to the world is not entirely her fault. Torvald's treatment of Nora as a small helpless child only contributes to Nora's isolation from reality. Just as Nora relates to the exterior world primarily through material objects, Torvald relates to Nora as an object to be possessed. The question becomes who is more detached from reality? Though Torvald's attitude pervades every word he speaks to Nora, his objectification of her is most evident in his use of animal imagery. He refers to her as his little "lark" and "squirrel" small harmless animals. |
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