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NDQ_012210 | most segmented worms feed on dead organic matter. | a. true, b. false | a | Lesson: segmented worms
Segmented Worms:
When you think of worms, you probably picture earthworms. There are actually many types of worms, including flatworms, roundworms, and segmented worms. Earthworms are segmented worms. Segmented worms are in the phylum Annelida, which has over 22,000 known species. These worms a... |
NDQ_012211 | the leech is a segmented worm that feeds on live blood. | a. true, b. false | a | Lesson: segmented worms
Segmented Worms:
When you think of worms, you probably picture earthworms. There are actually many types of worms, including flatworms, roundworms, and segmented worms. Earthworms are segmented worms. Segmented worms are in the phylum Annelida, which has over 22,000 known species. These worms a... |
NDQ_012215 | worm parapodia serve what function? | a. touch, b. locomotion, c. feeding, d. sight | b | Lesson: segmented worms
Segmented Worms:
When you think of worms, you probably picture earthworms. There are actually many types of worms, including flatworms, roundworms, and segmented worms. Earthworms are segmented worms. Segmented worms are in the phylum Annelida, which has over 22,000 known species. These worms a... |
NDQ_012216 | which best describes the digestive tract of an annelid? | a. incomplete digestive tract with two openings, intestines and a stomach, b. incomplete digestive tract with one opening, an esophagus and a stomach, c. complete digestive tract with two openings, an esophagus and intestines, d. complete digestive tract with one opening, an esophagus and intestines | c | Lesson: segmented worms
Segmented Worms:
When you think of worms, you probably picture earthworms. There are actually many types of worms, including flatworms, roundworms, and segmented worms. Earthworms are segmented worms. Segmented worms are in the phylum Annelida, which has over 22,000 known species. These worms a... |
NDQ_012217 | which describes the segmented worm circulatory system? | a. a complete heart and blood vessels, b. five paired hearts and blood vessels, c. five two chamber hearts and blood, d. blood and blood vessels | b | Lesson: segmented worms
Segmented Worms:
When you think of worms, you probably picture earthworms. There are actually many types of worms, including flatworms, roundworms, and segmented worms. Earthworms are segmented worms. Segmented worms are in the phylum Annelida, which has over 22,000 known species. These worms a... |
NDQ_012218 | which worms have a body cavity? | a. flatworm and roundworm, b. roundworm and segmented worm, c. segmented worm and flatworm, d. all three phyla | b | Lesson: segmented worms
Segmented Worms:
When you think of worms, you probably picture earthworms. There are actually many types of worms, including flatworms, roundworms, and segmented worms. Earthworms are segmented worms. Segmented worms are in the phylum Annelida, which has over 22,000 known species. These worms a... |
NDQ_012219 | which worms have a complete digestive system? | a. flatworm and roundworm, b. roundworm and segmented worm, c. segmented worm and flatworm, d. all three phyla | b | Lesson: segmented worms
Segmented Worms:
When you think of worms, you probably picture earthworms. There are actually many types of worms, including flatworms, roundworms, and segmented worms. Earthworms are segmented worms. Segmented worms are in the phylum Annelida, which has over 22,000 known species. These worms a... |
NDQ_012220 | the mother determines the sex of her baby. | a. true, b. false | b | Lesson: sex linked inheritance
Sexlinked Inheritance:
What determines if a baby is a male or female? Recall that you have 23 pairs of chromosomesand one of those pairs is the sex chromosomes. Everyone has two sex chromosomes. Your sex chromosomes can be X or Y. Females have two X chromosomes (XX), while males have one... |
NDQ_012221 | females have two x chromosomes. | a. true, b. false | a | Lesson: sex linked inheritance
Sexlinked Inheritance:
What determines if a baby is a male or female? Recall that you have 23 pairs of chromosomesand one of those pairs is the sex chromosomes. Everyone has two sex chromosomes. Your sex chromosomes can be X or Y. Females have two X chromosomes (XX), while males have one... |
NDQ_012225 | a couple has already had three daughters. what is the chance that the next baby will be a boy? | a. 0%, b. 25%, c. 50%, d. 100% | a | Lesson: sex linked inheritance
Sexlinked Inheritance:
What determines if a baby is a male or female? Recall that you have 23 pairs of chromosomesand one of those pairs is the sex chromosomes. Everyone has two sex chromosomes. Your sex chromosomes can be X or Y. Females have two X chromosomes (XX), while males have one... |
NDQ_012226 | a colorblind male marries a carrier female. what is the chance that their child will be colorblind? | a. 0%, b. 25%, c. 50%, d. 100% | a | Lesson: sex linked inheritance
Sexlinked Inheritance:
What determines if a baby is a male or female? Recall that you have 23 pairs of chromosomesand one of those pairs is the sex chromosomes. Everyone has two sex chromosomes. Your sex chromosomes can be X or Y. Females have two X chromosomes (XX), while males have one... |
NDQ_012227 | a normal male marries a carrier female. what is the chance that their child will be colorblind? | a. 0, b. 25%, c. 50%, d. 100% | b | Lesson: sex linked inheritance
Sexlinked Inheritance:
What determines if a baby is a male or female? Recall that you have 23 pairs of chromosomesand one of those pairs is the sex chromosomes. Everyone has two sex chromosomes. Your sex chromosomes can be X or Y. Females have two X chromosomes (XX), while males have one... |
NDQ_012228 | a colorblind male marries a normal female. which statement is correct? | a. all their daughters will be carriers, b. all their sons will be colorblind, c. half of their daughters will be normal, d. both (a) and (b) are correct | a | Lesson: sex linked inheritance
Sexlinked Inheritance:
What determines if a baby is a male or female? Recall that you have 23 pairs of chromosomesand one of those pairs is the sex chromosomes. Everyone has two sex chromosomes. Your sex chromosomes can be X or Y. Females have two X chromosomes (XX), while males have one... |
NDQ_012229 | most sex-linked genes are ___________. | a. dominant, b. recessive, c. incompletely dominant, d. codominant | b | Lesson: sex linked inheritance
Sexlinked Inheritance:
What determines if a baby is a male or female? Recall that you have 23 pairs of chromosomesand one of those pairs is the sex chromosomes. Everyone has two sex chromosomes. Your sex chromosomes can be X or Y. Females have two X chromosomes (XX), while males have one... |
NDQ_012230 | many stis do not cause symptoms, especially in females. | a. true, b. false | a | Lesson: sexually transmitted infections
Sexually Transmitted Infections:
A sexually transmitted infection (STI) is an infection that spreads through sexual contact. STIs are caused by pathogens, a living thing or virus that causes infection. The pathogens enter the body through the reproductive organs. Many STIs also ... |
NDQ_012231 | all stis can be cured. | a. true, b. false | b | Lesson: sexually transmitted infections
Sexually Transmitted Infections:
A sexually transmitted infection (STI) is an infection that spreads through sexual contact. STIs are caused by pathogens, a living thing or virus that causes infection. The pathogens enter the body through the reproductive organs. Many STIs also ... |
NDQ_012235 | this sti may cause pain during urination. | a. gonorrhea, b. syphilis, c. hepatitis b, d. hiv | a | Lesson: sexually transmitted infections
Sexually Transmitted Infections:
A sexually transmitted infection (STI) is an infection that spreads through sexual contact. STIs are caused by pathogens, a living thing or virus that causes infection. The pathogens enter the body through the reproductive organs. Many STIs also ... |
NDQ_012236 | this sti is very serious and will cause death without treatment. | a. gonorrhea, b. syphilis, c. hpv, d. hiv | d | Lesson: sexually transmitted infections
Sexually Transmitted Infections:
A sexually transmitted infection (STI) is an infection that spreads through sexual contact. STIs are caused by pathogens, a living thing or virus that causes infection. The pathogens enter the body through the reproductive organs. Many STIs also ... |
NDQ_012237 | this sti usually begins with a small sore on the genitals. | a. gonorrhea, b. syphilis, c. hepatitis b, d. hiv | b | Lesson: sexually transmitted infections
Sexually Transmitted Infections:
A sexually transmitted infection (STI) is an infection that spreads through sexual contact. STIs are caused by pathogens, a living thing or virus that causes infection. The pathogens enter the body through the reproductive organs. Many STIs also ... |
NDQ_012238 | this sti causes yellowing of the skin and eyes. | a. gonorrhea, b. syphilis, c. hepatitis b, d. hpv | c | Lesson: sexually transmitted infections
Sexually Transmitted Infections:
A sexually transmitted infection (STI) is an infection that spreads through sexual contact. STIs are caused by pathogens, a living thing or virus that causes infection. The pathogens enter the body through the reproductive organs. Many STIs also ... |
NDQ_012239 | which of the following is one of the most common stis in teenagers? | a. genital herpes, b. genital warts, c. gonorrhea, d. syphilis | b | Lesson: sexually transmitted infections
Sexually Transmitted Infections:
A sexually transmitted infection (STI) is an infection that spreads through sexual contact. STIs are caused by pathogens, a living thing or virus that causes infection. The pathogens enter the body through the reproductive organs. Many STIs also ... |
NDQ_012240 | joint pain is a common problem as people age. | a. true, b. false | a | Lesson: skeletal system joints
Joints and How They Move:
A joint is a point at which two or more bones meet. There are three main types of joints in the body: 1. Fixed joints do not allow any bone movement. Many of the joints in your skull are fixed ( Figure 1.1). There are eight bones that fuse together to form the c... |
NDQ_012241 | all joints allow bones to move. | a. true, b. false | b | Lesson: skeletal system joints
Joints and How They Move:
A joint is a point at which two or more bones meet. There are three main types of joints in the body: 1. Fixed joints do not allow any bone movement. Many of the joints in your skull are fixed ( Figure 1.1). There are eight bones that fuse together to form the c... |
NDQ_012245 | which is an example of a ball-and-socket joint? | a. shoulder, b. knee, c. ankle, d. in forearm | a | Lesson: skeletal system joints
Joints and How They Move:
A joint is a point at which two or more bones meet. There are three main types of joints in the body: 1. Fixed joints do not allow any bone movement. Many of the joints in your skull are fixed ( Figure 1.1). There are eight bones that fuse together to form the c... |
NDQ_012246 | what type of joint allows you to turn the palm of your hand? | a. a ball-and-socket joint, b. a hinge joint, c. a pivot joint, d. a gliding joint | c | Lesson: skeletal system joints
Joints and How They Move:
A joint is a point at which two or more bones meet. There are three main types of joints in the body: 1. Fixed joints do not allow any bone movement. Many of the joints in your skull are fixed ( Figure 1.1). There are eight bones that fuse together to form the c... |
NDQ_012247 | what type of joint allows forward and backward movement? | a. a ball-and-socket joint, b. a hinge joint, c. a pivot joint, d. a gliding joint | b | Lesson: skeletal system joints
Joints and How They Move:
A joint is a point at which two or more bones meet. There are three main types of joints in the body: 1. Fixed joints do not allow any bone movement. Many of the joints in your skull are fixed ( Figure 1.1). There are eight bones that fuse together to form the c... |
NDQ_012248 | where are gliding joints located? | a. hip and shoulder, b. knees, c. elbow, d. wrists and ankles | d | Lesson: skeletal system joints
Joints and How They Move:
A joint is a point at which two or more bones meet. There are three main types of joints in the body: 1. Fixed joints do not allow any bone movement. Many of the joints in your skull are fixed ( Figure 1.1). There are eight bones that fuse together to form the c... |
NDQ_012249 | your skin is the largest organ in your body. | a. true, b. false | a | Lesson: skin
Your Skin:
Did you know that you see the largest organ in your body every day? You wash it, dry it, cover it up to stay warm, and uncover it to cool off. Yes, your skin is your bodys largest organ. Your skin is part of your integumentary system ( Figure 1.1), which is the outer covering of your body. The ... |
NDQ_012250 | the layer of skin you can see is actually dead cells. | a. true, b. false | a | Lesson: skin
Your Skin:
Did you know that you see the largest organ in your body every day? You wash it, dry it, cover it up to stay warm, and uncover it to cool off. Yes, your skin is your bodys largest organ. Your skin is part of your integumentary system ( Figure 1.1), which is the outer covering of your body. The ... |
NDQ_012254 | how does skin control body temperature? | a. by keeping water from leaving the body, b. by sensing heat and cold, c. by making and releasing perspiration, d. all of the above | c | Lesson: skin
Your Skin:
Did you know that you see the largest organ in your body every day? You wash it, dry it, cover it up to stay warm, and uncover it to cool off. Yes, your skin is your bodys largest organ. Your skin is part of your integumentary system ( Figure 1.1), which is the outer covering of your body. The ... |
NDQ_012255 | which statement is true about the epidermis? | a. the epidermis is made of tough connective tissue, b. the epidermis forms the waterproof, protective wrap over the body's surface, c. the epidermis contains hair follicles and sweat glands, d. all of the above describe the epidermis | b | Lesson: skin
Your Skin:
Did you know that you see the largest organ in your body every day? You wash it, dry it, cover it up to stay warm, and uncover it to cool off. Yes, your skin is your bodys largest organ. Your skin is part of your integumentary system ( Figure 1.1), which is the outer covering of your body. The ... |
NDQ_012256 | how does skin act as a sun block? | a. melanin blocks sunlight from getting to deeper layers of skin cells, b. special nerve endings in your skin sense heat, blocking out sunlight, c. natural perspiration washes away sunlight, d. skin has natural spf 15 material built in | a | Lesson: skin
Your Skin:
Did you know that you see the largest organ in your body every day? You wash it, dry it, cover it up to stay warm, and uncover it to cool off. Yes, your skin is your bodys largest organ. Your skin is part of your integumentary system ( Figure 1.1), which is the outer covering of your body. The ... |
NDQ_012257 | which statement is true about the outermost layers of skin? | a. the outermost layers are composed of 25 to 30 layers of cells, b. the outermost layers are made of dead cells, c. live cells from underneath move upward to replace shed cells, d. all of the above are true | d | Lesson: skin
Your Skin:
Did you know that you see the largest organ in your body every day? You wash it, dry it, cover it up to stay warm, and uncover it to cool off. Yes, your skin is your bodys largest organ. Your skin is part of your integumentary system ( Figure 1.1), which is the outer covering of your body. The ... |
NDQ_012258 | how does skin release excess water and get rid of wastes such as ammonia, urea, salts, and sugar. | a. through melanin, b. through sebum, c. through sweat, d. through special nerve endings | c | Lesson: skin
Your Skin:
Did you know that you see the largest organ in your body every day? You wash it, dry it, cover it up to stay warm, and uncover it to cool off. Yes, your skin is your bodys largest organ. Your skin is part of your integumentary system ( Figure 1.1), which is the outer covering of your body. The ... |
NDQ_012259 | your body has only three types of muscles. | a. true, b. false | a | Lesson: smooth skeletal and cardiac muscles
Types of Muscles:
The muscular system consists of all the muscles in the body. This is the body system that allows us to move. You also depend on many muscles to keep you alive. Your heart, which is mostly muscle, pumps blood around your body. Each muscle in the body is made... |
NDQ_012260 | you cannot stop a reflex muscle contraction. | a. true, b. false | a | Lesson: smooth skeletal and cardiac muscles
Types of Muscles:
The muscular system consists of all the muscles in the body. This is the body system that allows us to move. You also depend on many muscles to keep you alive. Your heart, which is mostly muscle, pumps blood around your body. Each muscle in the body is made... |
NDQ_012264 | what muscles are not under voluntary control? | a. skeletal muscle and smooth muscle, b. skeletal muscle and cardiac muscle, c. cardiac muscle and smooth muscle, d. bone muscle and heart muscle | c | Lesson: smooth skeletal and cardiac muscles
Types of Muscles:
The muscular system consists of all the muscles in the body. This is the body system that allows us to move. You also depend on many muscles to keep you alive. Your heart, which is mostly muscle, pumps blood around your body. Each muscle in the body is made... |
NDQ_012265 | what muscle pushes food through your intestines? | a. skeletal muscle, b. smooth muscle, c. cardiac muscle, d. intestinal muscle | b | Lesson: smooth skeletal and cardiac muscles
Types of Muscles:
The muscular system consists of all the muscles in the body. This is the body system that allows us to move. You also depend on many muscles to keep you alive. Your heart, which is mostly muscle, pumps blood around your body. Each muscle in the body is made... |
NDQ_012266 | what muscle is found only in one place in the body? | a. skeletal muscle, b. smooth muscle, c. cardiac muscle, d. brain muscle | c | Lesson: smooth skeletal and cardiac muscles
Types of Muscles:
The muscular system consists of all the muscles in the body. This is the body system that allows us to move. You also depend on many muscles to keep you alive. Your heart, which is mostly muscle, pumps blood around your body. Each muscle in the body is made... |
NDQ_012267 | where is smooth muscle located? | a. brain, heart, and pancreas, b. esophagus, stomach, intestines, and blood vessels, c. kidney, liver, and spleen, d. all of the above are correct | b | Lesson: smooth skeletal and cardiac muscles
Types of Muscles:
The muscular system consists of all the muscles in the body. This is the body system that allows us to move. You also depend on many muscles to keep you alive. Your heart, which is mostly muscle, pumps blood around your body. Each muscle in the body is made... |
NDQ_012268 | what are the two main proteins in muscle cells? | a. actin and myosin, b. keratin and chitin, c. contractin and relaxin, d. collagen and chitin | a | Lesson: smooth skeletal and cardiac muscles
Types of Muscles:
The muscular system consists of all the muscles in the body. This is the body system that allows us to move. You also depend on many muscles to keep you alive. Your heart, which is mostly muscle, pumps blood around your body. Each muscle in the body is made... |
NDQ_012279 | water is an unlimited resource. | a. true, b. false | b | Lesson: sources of water pollution
Sources of Water Pollution:
While to many people clean water may seem limitless and everywhere, to many others this is not so. Water pollution is a serious issue facing hundreds of millions of people world-wide, having harmful effects on the lives of those people. Water is not in unl... |
NDQ_012280 | many people do not have access to fresh unpolluted water. | a. true, b. false | a | Lesson: sources of water pollution
Sources of Water Pollution:
While to many people clean water may seem limitless and everywhere, to many others this is not so. Water pollution is a serious issue facing hundreds of millions of people world-wide, having harmful effects on the lives of those people. Water is not in unl... |
NDQ_012284 | when is water considered polluted? | a. when it does nor support a use for animals or plants, b. when it does not support a human use, c. when it is not safe to drink, d. all of the above | d | Lesson: sources of water pollution
Sources of Water Pollution:
While to many people clean water may seem limitless and everywhere, to many others this is not so. Water pollution is a serious issue facing hundreds of millions of people world-wide, having harmful effects on the lives of those people. Water is not in unl... |
NDQ_012285 | what is a potential contaminant of groundwater. | a. agricultural chemicals, b. hazardous household products, c. disease-producing pathogens, d. all of the above | d | Lesson: sources of water pollution
Sources of Water Pollution:
While to many people clean water may seem limitless and everywhere, to many others this is not so. Water pollution is a serious issue facing hundreds of millions of people world-wide, having harmful effects on the lives of those people. Water is not in unl... |
NDQ_012286 | which of the following is an example of point source pollution? | a. acid rain, b. untreated sewage, c. fertilizer runoff, d. pathogen contamination | b | Lesson: sources of water pollution
Sources of Water Pollution:
While to many people clean water may seem limitless and everywhere, to many others this is not so. Water pollution is a serious issue facing hundreds of millions of people world-wide, having harmful effects on the lives of those people. Water is not in unl... |
NDQ_012287 | which of the following is an example of nonpoint source pollution? | a. underground storage tanks, b. untreated sewage, c. fertilizer runoff, d. wastewater | c | Lesson: sources of water pollution
Sources of Water Pollution:
While to many people clean water may seem limitless and everywhere, to many others this is not so. Water pollution is a serious issue facing hundreds of millions of people world-wide, having harmful effects on the lives of those people. Water is not in unl... |
NDQ_012288 | what is the primary cause of an algal bloom? | a. runoff of fertilizer into bodies of water, b. leaking underground storage tanks, c. acid rain, d. pesticide runoff | a | Lesson: sources of water pollution
Sources of Water Pollution:
While to many people clean water may seem limitless and everywhere, to many others this is not so. Water pollution is a serious issue facing hundreds of millions of people world-wide, having harmful effects on the lives of those people. Water is not in unl... |
NDQ_012339 | there are five main tastes that humans can perceive. | a. true, b. false | a | Lesson: taste and smell
Taste and Smell:
The senses of taste and smell are more complicated than many people might think and have a surprisingly large impact on behavior, perception and overall health. Imagine your sense of smell disappearing as you age. Though this doesnt usually happen, it could provide clues about ... |
NDQ_012340 | you are able to sense many different flavors because of your sense of smell. | a. true, b. false | a | Lesson: taste and smell
Taste and Smell:
The senses of taste and smell are more complicated than many people might think and have a surprisingly large impact on behavior, perception and overall health. Imagine your sense of smell disappearing as you age. Though this doesnt usually happen, it could provide clues about ... |
NDQ_012344 | if you hold your nose and start chewing a watermelon jellybean, what will it taste like? | a. watermelon, b. sweet, c. sour, d. all of the above | b | Lesson: taste and smell
Taste and Smell:
The senses of taste and smell are more complicated than many people might think and have a surprisingly large impact on behavior, perception and overall health. Imagine your sense of smell disappearing as you age. Though this doesnt usually happen, it could provide clues about ... |
NDQ_012345 | which taste will be associated with citrus fruits? | a. sweet, b. sour, c. salty, d. bitter | b | Lesson: taste and smell
Taste and Smell:
The senses of taste and smell are more complicated than many people might think and have a surprisingly large impact on behavior, perception and overall health. Imagine your sense of smell disappearing as you age. Though this doesnt usually happen, it could provide clues about ... |
NDQ_012346 | which food will have an umami taste? | a. candy, b. fish, c. oranges, d. beer | b | Lesson: taste and smell
Taste and Smell:
The senses of taste and smell are more complicated than many people might think and have a surprisingly large impact on behavior, perception and overall health. Imagine your sense of smell disappearing as you age. Though this doesnt usually happen, it could provide clues about ... |
NDQ_012347 | regular black coffee without any sweetener would taste __________ to many people. | a. sweet, b. salty, c. sour, d. bitter | d | Lesson: taste and smell
Taste and Smell:
The senses of taste and smell are more complicated than many people might think and have a surprisingly large impact on behavior, perception and overall health. Imagine your sense of smell disappearing as you age. Though this doesnt usually happen, it could provide clues about ... |
NDQ_012348 | a food with high amounts of sucrose and nacl would be | a. sweet and sour, b. sweet and salty, c. salty and bitter, d. salty and sour | b | Lesson: taste and smell
Taste and Smell:
The senses of taste and smell are more complicated than many people might think and have a surprisingly large impact on behavior, perception and overall health. Imagine your sense of smell disappearing as you age. Though this doesnt usually happen, it could provide clues about ... |
NDQ_012369 | carbon is necessary for living organisms to make organic compounds. | a. true, b. false | a | Lesson: the carbon cycle
The Carbon Cycle:
Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure 1.1). T... |
NDQ_012370 | people are able to make the carbon they need for their cells. | a. true, b. false | b | Lesson: the carbon cycle
The Carbon Cycle:
Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure 1.1). T... |
NDQ_012374 | where does the carbon dioxide we exhale come from? | a. carbon dioxide is a product of cellular respiration, b. carbon dioxide is obtained from the atmosphere, c. carbon dioxide is obtained from the food we eat, d. all of the above | a | Lesson: the carbon cycle
The Carbon Cycle:
Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure 1.1). T... |
NDQ_012375 | burning of organic matter releases carbon dioxide into the atmosphere. this process is known as | a. respiration, b. consumption, c. combustion, d. decomposition | c | Lesson: the carbon cycle
The Carbon Cycle:
Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure 1.1). T... |
NDQ_012376 | which depicts cellular respiration? | a. uses glucose and carbon dioxide and makes oxygen and water, b. uses glucose and oxygen and makes carbon dioxide and water, c. uses oxygen and carbon dioxide and makes glucose and water, d. uses water and carbon dioxide and makes glucose and oxygen | b | Lesson: the carbon cycle
The Carbon Cycle:
Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure 1.1). T... |
NDQ_012377 | when organisms die, what process returns their carbon back into the atmosphere? | a. respiration, b. erosion, c. combustion, d. decomposition | d | Lesson: the carbon cycle
The Carbon Cycle:
Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure 1.1). T... |
NDQ_012378 | which of the following are fossil fuels? | a. coal, oil, and natural gas, b. coal, tar and gasoline, c. tar, oil and gas, d. coal, oil and natural wood | a | Lesson: the carbon cycle
The Carbon Cycle:
Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure 1.1). T... |
NDQ_012379 | nitrogen is important for creating both proteins and carbohydrates. | a. true, b. false | b | Lesson: the nitrogen cycle
The Nitrogen Cycle:
Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Nitrogen is one of the most common elements in living organisms. It is important for creating both proteins and nucleic acids, like DNA. The air t... |
NDQ_012380 | most plants and animals cannot use the nitrogen in nitrogen gas. | a. true, b. false | a | Lesson: the nitrogen cycle
The Nitrogen Cycle:
Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Nitrogen is one of the most common elements in living organisms. It is important for creating both proteins and nucleic acids, like DNA. The air t... |
NDQ_012384 | the initial step of producing a nitrogen containing compound from nitrogen in the soil is | a. assimilation, b. ammonification, c. nitrification, d. denitrification | b | Lesson: the nitrogen cycle
The Nitrogen Cycle:
Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Nitrogen is one of the most common elements in living organisms. It is important for creating both proteins and nucleic acids, like DNA. The air t... |
NDQ_012385 | the final step of releasing nitrogen gas back into the atmosphere is | a. assimilation, b. ammonification, c. nitrification, d. denitrification | c | Lesson: the nitrogen cycle
The Nitrogen Cycle:
Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Nitrogen is one of the most common elements in living organisms. It is important for creating both proteins and nucleic acids, like DNA. The air t... |
NDQ_012386 | nitrogen gas is two nitrogen atoms held together by | a. a very strong single bond, b. a very strong double bond, c. a very strong triple bond, d. a nitrogen bond | c | Lesson: the nitrogen cycle
The Nitrogen Cycle:
Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Nitrogen is one of the most common elements in living organisms. It is important for creating both proteins and nucleic acids, like DNA. The air t... |
NDQ_012387 | nitrogen enters the roots of plants in a process called | a. assimilation, b. ammonification, c. nitrogen fixation, d. nitrification | a | Lesson: the nitrogen cycle
The Nitrogen Cycle:
Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Nitrogen is one of the most common elements in living organisms. It is important for creating both proteins and nucleic acids, like DNA. The air t... |
NDQ_012388 | what bacteria live in the root nodules of legumes? | a. denitrifying bacteria, b. nitrifying bacteria, c. nitrogen-fixing bacteria, d. all of the above | c | Lesson: the nitrogen cycle
The Nitrogen Cycle:
Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Nitrogen is one of the most common elements in living organisms. It is important for creating both proteins and nucleic acids, like DNA. The air t... |
NDQ_012389 | the water cycle recycles water through both the living and non-living parts of an ecosystem. | a. true, b. false | a | Lesson: the water cycle
The Water Cycle:
Whereas energy flows through an ecosystem, water and elements like carbon and nitrogen are recycled. Water and nutrients are constantly being recycled through the environment. This process through which water or a chemical element is continuously recycled in an ecosystem is cal... |
NDQ_012390 | the water cycle always starts with water evaporating from the ocean or lakes. | a. true, b. false | b | Lesson: the water cycle
The Water Cycle:
Whereas energy flows through an ecosystem, water and elements like carbon and nitrogen are recycled. Water and nutrients are constantly being recycled through the environment. This process through which water or a chemical element is continuously recycled in an ecosystem is cal... |
NDQ_012394 | what is the process in which water evaporates from leaves? | a. condensation, b. precipitation, c. evaporation, d. transpiration | d | Lesson: the water cycle
The Water Cycle:
Whereas energy flows through an ecosystem, water and elements like carbon and nitrogen are recycled. Water and nutrients are constantly being recycled through the environment. This process through which water or a chemical element is continuously recycled in an ecosystem is cal... |
NDQ_012395 | what process allows water to return to the earths surface? | a. condensation, b. precipitation, c. evaporation, d. transpiration | b | Lesson: the water cycle
The Water Cycle:
Whereas energy flows through an ecosystem, water and elements like carbon and nitrogen are recycled. Water and nutrients are constantly being recycled through the environment. This process through which water or a chemical element is continuously recycled in an ecosystem is cal... |
NDQ_012396 | which of the following is in the correct order? | a. precipitation runoff streams/rivers oceans evaporation, b. precipitation runoff groundwater oceans evaporation, c. precipitation runoff aquifer oceans evaporation, d. transpiration runoff streams/rivers aquifers evaporation | a | Lesson: the water cycle
The Water Cycle:
Whereas energy flows through an ecosystem, water and elements like carbon and nitrogen are recycled. Water and nutrients are constantly being recycled through the environment. This process through which water or a chemical element is continuously recycled in an ecosystem is cal... |
NDQ_012397 | evaporation produces | a. precipitation, b. rain or snow, c. water vapor, d. condensation | c | Lesson: the water cycle
The Water Cycle:
Whereas energy flows through an ecosystem, water and elements like carbon and nitrogen are recycled. Water and nutrients are constantly being recycled through the environment. This process through which water or a chemical element is continuously recycled in an ecosystem is cal... |
NDQ_012398 | rain, snow, hail, and sleet are examples of | a. precipitation, b. condensation, c. evaporation, d. bad weather | a | Lesson: the water cycle
The Water Cycle:
Whereas energy flows through an ecosystem, water and elements like carbon and nitrogen are recycled. Water and nutrients are constantly being recycled through the environment. This process through which water or a chemical element is continuously recycled in an ecosystem is cal... |
NDQ_012399 | life on earth began about 3.5 to 4 million years ago. | a. true, b. false | b | Lesson: timeline of evolution
Timeline of Evolution:
For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi, plants, and animals, took some time. Well over 3 billion years.
The Age of Earth:
How old is Earth? H... |
NDQ_012400 | most life is made of small, relatively simple single-celled organisms. | a. true, b. false | a | Lesson: timeline of evolution
Timeline of Evolution:
For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi, plants, and animals, took some time. Well over 3 billion years.
The Age of Earth:
How old is Earth? H... |
NDQ_012404 | when did modern humans first appear? | a. 20,000,000 years ago, b. 2,000,000 years ago, c. 200,000 years ago, d. 20,000 years ago | c | Lesson: timeline of evolution
Timeline of Evolution:
For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi, plants, and animals, took some time. Well over 3 billion years.
The Age of Earth:
How old is Earth? H... |
NDQ_012405 | what were the first life forms? | a. single-celled organisms similar to protists, b. single-cell organisms similar to bacteria, c. simple organisms similar to small water insects, d. simple organisms similar to small flies | b | Lesson: timeline of evolution
Timeline of Evolution:
For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi, plants, and animals, took some time. Well over 3 billion years.
The Age of Earth:
How old is Earth? H... |
NDQ_012406 | the geologic time scale is used to describe events such as | a. mass extinctions and signs of life, b. earthquakes and volcanic eruptions, c. major erosion events and meteorites impacting earth, d. all of the above are shown on the geologic time scale | d | Lesson: timeline of evolution
Timeline of Evolution:
For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi, plants, and animals, took some time. Well over 3 billion years.
The Age of Earth:
How old is Earth? H... |
NDQ_012407 | evidence of an ancient earth includes | a. fossils found in rocks, b. fossils of old life found high up in the mountains, c. fossils of ancient sea life on dry land far from oceans, d. fossils of ancient fish found in the oceans | c | Lesson: timeline of evolution
Timeline of Evolution:
For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi, plants, and animals, took some time. Well over 3 billion years.
The Age of Earth:
How old is Earth? H... |
NDQ_012408 | the oldest the earth can be is | a. 4,400,000,000 years, b. 44,570,000,000 years, c. 457,000,000,000 years, d. 4,570,000,000 years | d | Lesson: timeline of evolution
Timeline of Evolution:
For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi, plants, and animals, took some time. Well over 3 billion years.
The Age of Earth:
How old is Earth? H... |
NDQ_012409 | all reactions due to touch are controlled by the brain. | a. true, b. false | b | Lesson: touch
Touch:
When you look at the prickly cactus pictured below ( Figure 1.1), does the word "ouch" come to mind? Touching the cactus would be painful. Touch is the sense of pain, pressure, or temperature. Touch depends on sensory neurons, or nerve cells, in the skin. The skin on the palms of the hands, soles ... |
NDQ_012410 | there are millions of touch receptors scattered throughout the body. | a. true, b. false | a | Lesson: touch
Touch:
When you look at the prickly cactus pictured below ( Figure 1.1), does the word "ouch" come to mind? Touching the cactus would be painful. Touch is the sense of pain, pressure, or temperature. Touch depends on sensory neurons, or nerve cells, in the skin. The skin on the palms of the hands, soles ... |
NDQ_012414 | which receptors perceive sensations related to the temperature of objects? | a. mechanoreceptors, b. thermoreceptors, c. nociceptors, d. proprioceptors | b | Lesson: touch
Touch:
When you look at the prickly cactus pictured below ( Figure 1.1), does the word "ouch" come to mind? Touching the cactus would be painful. Touch is the sense of pain, pressure, or temperature. Touch depends on sensory neurons, or nerve cells, in the skin. The skin on the palms of the hands, soles ... |
NDQ_012415 | which receptors allow us to do fundamental activities? | a. mechanoreceptors, b. thermoreceptors, c. nociceptors, d. proprioceptors | d | Lesson: touch
Touch:
When you look at the prickly cactus pictured below ( Figure 1.1), does the word "ouch" come to mind? Touching the cactus would be painful. Touch is the sense of pain, pressure, or temperature. Touch depends on sensory neurons, or nerve cells, in the skin. The skin on the palms of the hands, soles ... |
NDQ_012416 | which receptors perceive sensations such as pressure, vibrations, and texture? | a. mechanoreceptors, b. thermoreceptors, c. nociceptors, d. proprioceptors | a | Lesson: touch
Touch:
When you look at the prickly cactus pictured below ( Figure 1.1), does the word "ouch" come to mind? Touching the cactus would be painful. Touch is the sense of pain, pressure, or temperature. Touch depends on sensory neurons, or nerve cells, in the skin. The skin on the palms of the hands, soles ... |
NDQ_012417 | the fingertips have the highest amount of | a. mechanoreceptors, b. thermoreceptors, c. nociceptors, d. proprioceptors | a | Lesson: touch
Touch:
When you look at the prickly cactus pictured below ( Figure 1.1), does the word "ouch" come to mind? Touching the cactus would be painful. Touch is the sense of pain, pressure, or temperature. Touch depends on sensory neurons, or nerve cells, in the skin. The skin on the palms of the hands, soles ... |
NDQ_012418 | which receptors are found in skin, muscles, bones, blood vessels, and some organs? | a. mechanoreceptors, b. thermoreceptors, c. nociceptors, d. proprioceptors | c | Lesson: touch
Touch:
When you look at the prickly cactus pictured below ( Figure 1.1), does the word "ouch" come to mind? Touching the cactus would be painful. Touch is the sense of pain, pressure, or temperature. Touch depends on sensory neurons, or nerve cells, in the skin. The skin on the palms of the hands, soles ... |
NDQ_012429 | transcription occurs in a ribosome in the nucleus. | a. true, b. false | b | Lesson: transcription of dna to rna
Transcription:
DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the information to the ribosome. In the nucleus, mRNA is created by using the DNA in a gene as a template. A templ... |
NDQ_012430 | all genes in a cell are transcribed into mrna. | a. true, b. false | b | Lesson: transcription of dna to rna
Transcription:
DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the information to the ribosome. In the nucleus, mRNA is created by using the DNA in a gene as a template. A templ... |
NDQ_012434 | if a gene sequence is acgtttacaa, what will be the corresponding mrna sequence? | a. tgcaaatgtt, b. ugcaaauguu, c. agcuuuacaa, d. agcuuuagaa | b | Lesson: transcription of dna to rna
Transcription:
DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the information to the ribosome. In the nucleus, mRNA is created by using the DNA in a gene as a template. A templ... |
NDQ_012435 | what is one significant difference between transcription and dna replication? | a. the dna unwinds during transcription, b. in transcription, u pairs with a instead of t pairing with a, c. the new dna moves to the ribosome, d. all of the above are significant differences | b | Lesson: transcription of dna to rna
Transcription:
DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the information to the ribosome. In the nucleus, mRNA is created by using the DNA in a gene as a template. A templ... |
NDQ_012436 | which of the following is incorrect? | a. dna does not leave the nucleus, b. dna provides a template for transcription, c. all genes are transcribed in each cell, d. uracil base pairs with adenine | c | Lesson: transcription of dna to rna
Transcription:
DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the information to the ribosome. In the nucleus, mRNA is created by using the DNA in a gene as a template. A templ... |
NDQ_012437 | which best describes a codon? | a. a codon is a triplet of three bases in the gene sequence, b. a codon is a triplet of three bases in the mrna that codes for a specific gene, c. a codon is a triplet of three bases in the mrna that codes for a specific, d. a codon is a triplet of three bases in the dna that codes for a specific amino acid | c | Lesson: transcription of dna to rna
Transcription:
DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the information to the ribosome. In the nucleus, mRNA is created by using the DNA in a gene as a template. A templ... |
NDQ_012438 | which best defines an mrna molecule? | a. a molecule that carries the instructions in the dna to the ribosome, b. a molecule that carries the instructions in the rna to the ribosome, c. a molecule that carries the instructions in the dna to the nucleus, d. a molecule that carries the instructions in the mrna to the gene | a | Lesson: transcription of dna to rna
Transcription:
DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the information to the ribosome. In the nucleus, mRNA is created by using the DNA in a gene as a template. A templ... |
NDQ_012439 | ribosomes are the organelles where proteins are made. | a. true, b. false | a | Lesson: translation of rna to protein
Translation:
The mRNA, which is transcribed from the DNA in the nucleus, carries the directions for the protein-making process. mRNA tells the ribosome ( Figure 1.1) how to create a specific protein. Ribosomes translate RNA into a protein with a specific amino acid sequence. The t... |
NDQ_012440 | translation translates from one language to another. | a. true, b. false | a | Lesson: translation of rna to protein
Translation:
The mRNA, which is transcribed from the DNA in the nucleus, carries the directions for the protein-making process. mRNA tells the ribosome ( Figure 1.1) how to create a specific protein. Ribosomes translate RNA into a protein with a specific amino acid sequence. The t... |
NDQ_012444 | during translation, the mrna is translated from __________ into __________. | a. nucleic acid, amino acids, b. nucleotides, protein, c. nucleotides, amino acids, d. nucleic acid, protein | c | Lesson: translation of rna to protein
Translation:
The mRNA, which is transcribed from the DNA in the nucleus, carries the directions for the protein-making process. mRNA tells the ribosome ( Figure 1.1) how to create a specific protein. Ribosomes translate RNA into a protein with a specific amino acid sequence. The t... |
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