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ber of heartbeats/sec is the dependent variable (you observe how it changes in response to different temperatures). • You design an experiment to investigate the effect of exercise on pulse rate and blood pressure. The physiological conditions (independent variable, or variable you manipulate) include sitting, exercisi... |
tain eight haploid ascospores. In most ascomycetes, the asci are embedded in other hyphae that form a fruiting body. One kind of fruiting body, a perithecium, surrounds the asci, except for a passageway that allows for the escape of the ascospores. Sexual reproduction begins in ascomycetes when hyphae from two strains ... |
determine the relationship between respiratory rate and insect size. 264 20_097649 ch16.qxd 6/13/07 9:02 PM Page 265 Laboratory Review Laboratory 6: Molecular Biology The bacterial plasmid pAMP is often used as a vector (or carrier) to transfer genes into bacteria. To insert a gene into a plasmid (or any other piece o... |
the F2 generation will show a 9:3:3:1 distribution of traits. (Compare the cross of yellow/green, round/wrinkled peas in the section review of heredity.) 2. To show sex-linkage, make a monohybrid cross involving a sex-linked trait, such as white eyes. A white-eyed female (Xw/Xw) crossed with a wild-type (red-eyed) male... |
ormal conditions is shorter than it is for unfit individuals undertaking the same amount of activity. In the second part of this lab, the Q10 value is calculated for Daphnia, the water flea. The Q10 value measures the increase in metabolic activity resulting from a 10°C increase in body temperature in ectothermic anima... |
o cores after twenty-four hours in the beakers. +20 +10 0 -10 -20 .2 0.4 0.6 Sucrose Concentration (moles/liter) 0.8 1.0 2. The water potential of the potato core can be calculated using which of the following sucrose concentrations? A. B. C. D. E. 0 M 0.2 M 0.4 M 0.5 M 0.10 M 276 For questions 4–6, use the following g... |
a restraining pressure on the cell contents. 4. B. The initial rate of reaction is the slope of the plotted curve at the beginning of the reaction. Since the straight line portion of the curve from 0 to 2 seconds indicates a constant rate of reaction, the slope at any point along this portion of the line will provide ... |
rage). At the end of the chain, the two electrons are accepted by pigment molecules in photosystem I, where they are again energized by light energy, passed to a special chlorophyll a (P700), and then passed to a primary electron acceptor. The two electrons are then used to reduce NADP+. With H+ (from the splitting of ... |
out of the mitochondria. D. An electrochemical gradient is established across mitochondrial membranes. E. A pH gradient is established across mitochondrial membranes 24. A recessive trait appears in 81% of the individuals in a population that is in Hardy-Weinberg equilibrium. What percent of the population in the next... |
e one lettered choice that best matches the phrase or sentence. Each lettered choice may be used once, more than once, or not at all. Questions 58–59 refer to the following. Questions 60–62 refer to the following. A. Cellulose B. Glycogen C. Glucagon D. Guanine E. Phospholipid A. Neurulation B. Cleavage C. Fertilizatio... |
DPIP, an electron acceptor, was used. DPIP is blue in its oxidized state but turns clear when reduced. That is, when electrons from photosynthesis are transferred to DPIP, the blue solution (oxidized DPIP) turns clear (reduced DPIP). A spectrophotometer measures the degree to which the blue solution becomes clear. (The... |
wall made from peptidoglycan. 10. D. A metabolic reaction that synthesizes smaller molecules into larger molecules is anabolic. Answer D describes the process of photosynthesis in which glucose, C6H12O6, is assembled. The remaining answer choices describe catabolic reactions in which molecules are broken into smaller ... |
can be transferred between bacteria during conjugation. 54. B. Since both parents have a mother with O blood type, the genotypes of the parents are IAi and IBi. The probability of having a child with genotype ii is 25% (IAi × IBi → 1⁄4 IAIB + 1⁄4 IAi + 1⁄4 IBi + 1⁄4 ii). Alternatively, you can work out this problem us... |
al line between 100 and 1000 represents an increase of 100 base pairs. Between lines 1000 and 10,000, each horizontal line represents an increase of 1000 base pairs. Thus, the second line above the 1000 line represents 3000 base pairs. On the arithmetic scale for the x-axis, each vertical line represents an increment o... |
ere one of the following appears: 1 pt: Evolutionary change results when allele frequencies change over time. 1 pt: Microevolution describes changes in populations or species from generation to generation. Question 4 (10 points maximum) A. acetylcholine (2 points maximum) 1 pt: Acetylcholine is a neurotransmitter at ne... |
s. Sometimes, the clown fish will provide scraps of food to the sea anemones, and at other times, the clown fish will eat some of a fish that is snared by the sea anemones. The relationship between the clown fish and the sea anemone is an example of competition commensalism A. B. C. mutualism parasitism D. predation E.... |
nrelated species that occur in different parts of the world. Species 2 evolves into new species 3 and species 4 evolves into new species 5. Questions 77–79 refer to the following graph showing changes in the heart rate of the aquatic crustacean Daphnia in response to temperature and the presence of alcohol. species 3 s... |
r answer) Writing Time: 90 minutes 1. The enzyme amylase is found in the saliva of humans and other animals. Amylase breaks down starch into the disaccharide maltose. The table below shows the results of an experiment where the rate of amylase activity was measured by sampling for maltose every minute. Time (min) malto... |
with A (unlike in DNA, where T pairs with A). (C, G, A, T, and U represent the cytosine, guanine, adenine, thymine, and uracil nucleotides.) 15. C. Unlike members of the Bacteria, the Archaea do not have peptidoglycans in their cell walls. But the Archaea resemble the Bacteria because both have plasmids and a circular ... |
not shared with plants. 43. A. Gametes are produced by the gametophyte. Since the gametophyte is haploid, haploid gametes must be produced by mitosis. Alternation of generations occurs when there is multicellularity in both haploid and diploid stages of the life cycle. Fertilization occurs between stages II and III whe... |
eids are long and narrow with tapered ends. Water passes from one tracheid to the next tracheid through pits in the cell walls where the tapered ends of adjacent tracheids overlap. Vessels are shorter and have larger diameters with non-tapered ends. Water passes from one vessel to the next through perforations, areas d... |
dependent variable divided by the change in the independent variable or ∆y/∆x. 1 pt: The answer for the rate of reaction is correct: (0.6–0)/(3–0) = 0.2 substrate & product (1 point maximum) 1 pt: The substrate is starch and the product is maltose. B. C. 350 23_097649 ch18.qxd 6/13/07 9:04 PM Page 351 Practice Test 2 D... |
y with ATP to drive their action. In co-transport (or secondary active transport), energy from primary transport can be used to move another substance into the cell and up its concentration gradient. 5.4 Bulk Transport Active transport methods require the direct use of ATP to fuel the transport. Large particles, such a... |
at http://textbookequity.org/tbq_biology/ or at http://cnx.org/content/col11448/latest/ CHAPTER 6 | METABOLISM 199 6.5 Enzymes Enzymes are chemical catalysts that accelerate chemical reactions at physiological temperatures by lowering their activation energy. Enzymes are usually proteins consisting of one or more poly... |
the Citric Acid Cycle In the presence of oxygen, pyruvate is transformed into an acetyl group attached to a carrier molecule of coenzyme A. The resulting acetyl CoA can enter several pathways, but most often, the acetyl group is delivered to the citric acid cycle for further catabolism. During the conversion of pyruvat... |
oduct into the atmosphere. Eukaryotic autotrophs, such as plants and algae, have organelles called chloroplasts in which photosynthesis takes place, and starch accumulates. In prokaryotes, such as cyanobacteria, the process is less localized and occurs within folded membranes, extensions of the plasma membrane, and in ... |
oplasm are not released into the spaces between cells, as they are in uncontrolled death, necrosis. Apoptosis also ensures the efficient recycling of the components of the dead cell. Termination of the cellular signaling cascade is very important so that the response to a signal is appropriate in both timing and intens... |
of control begins with a change in the DNA sequence of a gene that codes for one of the regulatory molecules. Faulty instructions lead to a protein that does not function as it should. Any disruption of the monitoring system can allow other mistakes to be passed on to the daughter cells. Each successive cell division w... |
arities, but have distinct outcomes. Mitotic divisions are single nuclear divisions that produce daughter nuclei that are genetically identical and have the same number of chromosome sets as the original cell. Meiotic divisions include two nuclear divisions that produce four daughter nuclei that are genetically differe... |
y, genes may interact at the level of gene products such that the expression of an allele for one gene masks or modifies the expression of an allele for a different gene. This is called epistasis. ART CONNECTION QUESTIONS 1. Figure 12.5 In pea plants, round peas (R) are dominant to wrinkled peas (r). You do a test cros... |
lture, polyploid crops (like coffee, strawberries, or bananas) tend to produce ________. 376 CHAPTER 13 | MODERN UNDERSTANDINGS OF INHERITANCE a. more uniformity b. more variety larger yields c. smaller yields d. 10. Assume a pericentric inversion occurred in one of two homologs prior to meiosis. The other homolog rema... |
uencing method. 19. Describe the structure and complementary base pairing of DNA. 20. How did the scientific community learn that DNA replication takes place in a semiconservative fashion? 21. DNA replication is bidirectional and discontinuous; explain your understanding of those concepts. 22. What are Okazaki fragment... |
AP, increases the binding ability of RNA polymerase to the promoter when CAP is bound. In this case, low levels of glucose result in the binding of cAMP to CAP. CAP This content is available for free at http://textbookequity.org/tbq_biology/ or at http://cnx.org/content/col11448/latest/ CHAPTER 16 | GENE EXPRESSION 451... |
e being developed that decrease DNA methylation and prevent the removal of acetyl groups from histone proteins. Explain how these drugs could affect gene expression to help kill tumor cells. 30. How can understanding the gene expression pattern in a cancer cell tell you something about that specific form of cancer? 480... |
ction and treatment? 29. How can genomics be used to predict disease risk and treatment options? 31. What is personalized medicine? CHAPTER 18 | EVOLUTION AND THE ORIGIN OF SPECIES 507 CHAPTER SUMMARY 18.1 Understanding Evolution Evolution is the process of adaptation through mutation which allows more desirable charac... |
tion Because natural selection acts to increase the frequency of beneficial alleles and traits while decreasing the frequency of deleterious qualities, it is adaptive evolution. Natural selection acts at the level of the individual, selecting for those that have a higher overall fitness compared to the rest of the popu... |
lable for free at http://textbookequity.org/tbq_biology/ or at http://cnx.org/content/col11448/latest/ CHAPTER 20 | PHYLOGENIES AND THE HISTORY OF LIFE 553 6. Which statement about the taxonomic classification system is correct? a. There are more domains than kingdoms. b. Kingdoms are the top category of classification... |
in which they affect humans? 22. Why is immunization after being bitten by a rabid animal so effective and why aren’t people vaccinated for rabies like dogs and cats are? 23. Prions are responsible for variant CreutzfeldtJakob Disease, which has resulted in over 100 human deaths in Great Britain during the last 10 year... |
.2 M b. high sugar concentration c. the addition of halogens d. all of the above 8. The presence of a membrane-enclosed nucleus is a characteristic of ________. a. prokaryotic cells b. eukaryotic cells c. all cells d. viruses 9. Which of the following consist of prokaryotic cells? a. bacteria and fungi b. archaea and f... |
se c. capturing food d. photosynthesis 15. What genus of protists appears to contradict the statement that unicellularity restricts cell size? a. Dictyostelium b. Ulva c. Plasmodium d. Caulerpa 16. An example of carbon fixation is _____________. a. photosynthesis b. decomposition c. phagocytosis d. parasitism 17. Which... |
vive out of the water. All land plants share the following characteristics: alternation of generations, with the haploid plant called a gametophyte, and the diploid plant called a sporophyte; protection of the embryo, formation of haploid spores in a sporangium, formation of gametes in a gametangium, and an apical meri... |
rm diversity is due in part to multiple interactions with animals. Herbivory has favored the development of defense mechanisms in plants, and avoidance of those defense mechanism in animals. Pollination (the transfer of pollen to a carpel) is mainly carried out by wind and animals, and angiosperms have evolved numerous... |
e a. development into a fixed body plan b. asexual reproduction c. specialized tissues d. heterotrophic nutrient sourcing 5. During embryonic development, unique cell layers develop and distinguish during a stage called ________. a. b. c. d. the blastula stage the germ layer stage the gastrula stage the organogenesis s... |
Cephalochordata (lancelets), together with the vertebrates in Vertebrata. Most tunicates live on the ocean floor and are suspension feeders. Lancelets are suspension feeders that feed on phytoplankton and other microorganisms. ART CONNECTION QUESTIONS 1. Figure 28.3 Which of the following statements is false? a. Choan... |
A number of species, sometimes called archaic H. sapiens, evolved from H. erectus approximately 500,000 years ago. There is considerable debate about the origins of anatomically modern humans or H. sapiens sapiens. ART CONNECTION QUESTIONS 1. Figure 29.3 Which of the following statements about common features of chord... |
eds and promote stem growth. Abscisic acid induces dormancy in seeds and buds, and protects plants from excessive water loss by promoting stomatal closure. Ethylene gas speeds up fruit ripening and dropping of leaves. Plants respond to touch by rapid movements (thigmotropy and thigmonasty) and slow differential growth ... |
ymbiotic interaction between soil bacteria and legumes. The bacteria form nodules on the legume’s roots in which nitrogen fixation takes place. Fungi form symbiotic associations (mycorrhizae) with plants, becoming integrated into the physical structure of the root. Through mycorrhization, the plant obtains minerals fro... |
g plant will grow into an adult faster than a seedling. d. Asexual reproduction takes advantage of a more diverse gene pool. 14. Plants that flower once in their lifetime are known as ________. a. monoecious b. dioecious c. polycarpic d. monocarpic 15. Plant species that complete their lifecycle in one season are known... |
om the body. While most absorption occurs in the small intestines, the large intestine is responsible for the final removal of water that remains after the absorptive process of the small intestines. The cells that line the large intestine absorb some vitamins as well as any leftover salts and water. The large intestin... |
ion potential, its membrane must reach ________. a. hyperpolarization b. c. d. the threshold of excitation the refractory period inhibitory postsynaptic potential 8. After an action potential, the opening of additional voltage-gated ________ channels and the inactivation of sodium channels, cause the membrane to return... |
hich of the following statements about the human eye is false? a. Rods detect color, while cones detect only shades of gray. b. When light enters the retina, it passes the ganglion cells and bipolar cells before reaching photoreceptors at the rear of the eye. c. The iris adjusts the amount of light coming into the eye.... |
d is located at the base of the brain and is attached to the hypothalamus by the infundibulum. The anterior pituitary receives products from the hypothalamus by the hypophyseal portal system and produces six hormones. The posterior pituitary is an extension of the brain and releases hormones (antidiuretic hormone and o... |
that have a space between the adjoining bones. The functional classification divides joints into three categories: synarthroses, amphiarthroses, and diarthroses. The movement of synovial joints can be classified as one of four different types: gliding, angular, rotational, or special movement. Gliding movements occur ... |
its ability to dissociate from hemoglobin. Carbon dioxide can be transported through the blood via three methods. It is dissolved directly in the blood, bound to plasma proteins or hemoglobin, or converted into bicarbonate. The majority of carbon dioxide is transported as part of the bicarbonate system. Carbon dioxide ... |
re Regulation Blood primarily moves through the body by the rhythmic movement of smooth muscle in the vessel wall and by the action of the skeletal muscle as the body moves. Blood is prevented from flowing backward in the veins by one-way valves. Blood flow through the capillary beds is controlled by precapillary sphin... |
entration in: a. intracellular fluid b. extracellular fluid c. blood plasma d. none of the above a. b. c. shrink due to water loss swell due to water gain stay the same size due to water moving into and out of the cell at the same rate d. none of the above 7. The macula densa is/are: a. present in the renal medulla. b.... |
cross reactivity? 1312 CHAPTER 43 | ANIMAL REPRODUCTION AND DEVELOPMENT CHAPTER SUMMARY 43.1 Reproduction Methods Reproduction may be asexual when one individual produces genetically identical offspring, or sexual when the genetic material from two individuals is combined to produce genetically diverse offspring. Asex... |
27. Which of the following is false? 30. The ribs form from the ________. a. The endoderm, mesoderm, ectoderm are germ layers. b. The trophoblast is a germ layer. a. notochord b. neural plate c. neural tube somites d. CRITICAL THINKING QUESTIONS 31. Why is sexual reproduction useful if only half the animals can produc... |
est a plausible scientific explanation for why this is so. 18. The extremely low precipitation of subtropical desert biomes might lead one to expect fire to be a major disturbance factor; however, fire is more common in the temperate grassland biome than in the subtropic desert biome. Why is this? 19. In what ways are ... |
or at http://cnx.org/content/col11448/latest/ 1430 CHAPTER 46 | ECOSYSTEMS CHAPTER SUMMARY 46.1 Ecology of Ecosystems Ecosystems exist on land, at sea, in the air, and underground. Different ways of modeling ecosystems are necessary to understand how environmental disturbances will affect ecosystem structure and dynam... |
ntroductions are increasing because of the increased mobility of human populations and growing global trade and transportation. Climate change is forcing range changes that may lead to extinction. It is also affecting adaptations to the timing of resource availability that negatively affects species in seasonal environ... |
between the atoms, but rather are associated more with one ion than the other. Ionic bonds are strong bonds, but are weaker than covalent bonds, meaning it takes less energy to break an ionic bond compared with a covalent one. 15 Hydrogen bonds and van der Waals interactions form weak associations between different mol... |
ade up of microtubules. Cilia are short, hair-like structures that exist in large numbers and usually cover the entire surface of the plasma membrane. Flagella, in contrast, are long, hair-like structures; when flagella are present, a cell has just one or two. 32 They differ because plant cell walls are rigid. Plasmode... |
e final product of the reaction is also the initial reactant. The pathway is self-perpetuating, as long as any of the intermediates of the pathway are supplied. Circular pathways are able to accommodate multiple entry and exit points, thus being particularly well suited for amphibolic pathways. In a linear pathway, one... |
tly, a cell plate is formed in the center of the cell at the former metaphase plate. The cell plate is formed from Golgi vesicles that contain enzymes, proteins, and glucose. The vesicles fuse and the enzymes build a new cell wall from the proteins and glucose. The cell plate grows toward and eventually fuses with the ... |
plant. For each cross, F1 and F2 offspring would be analyzed to determine if offspring traits were affected according to which parent donated each trait. 19 Because axial is dominant, the gene would be designated as A. F1 would be all heterozygous Aa with axial phenotype. F2 would have possible genotypes of AA, Aa, and... |
activated or repressed depending on the needs of the cell and what is available in the local environment. 21 You can create medications that reverse the epigenetic processes (to add histone acetylation marks or to remove DNA methylation) and create an open chromosomal configuration. 22 A mutation in the promoter region... |
tion’s gene pool. If those surviving individuals are not representative of the original population, the post-hurricane gene pool will differ from the original gene pool. 20 The theory of natural selection stems from the observation that some individuals in a population survive longer and have more offspring than others... |
components may also have resulted from endosymbiotic events. 19 The ability to perform sexual reproduction allows protists to recombine their genes and produce new variations of progeny that may be better suited to the new environment. In contrast, asexual reproduction generates progeny that are clones of the parent. ... |
nt. The relatively loose placement of organs within the coelom allows them to develop and grow with some spatial freedom, which promoted the evolution of optimal organ arrangement. The coelom also provides space for a circulatory system, which is an advantageous way to distribute body fluids and gases. 24 Two new clade... |
t because it can continue to grow even when the tip of the plant is removed by grazing or mowing. 28 Vascular tissue transports water, minerals, and sugars throughout the plant. Vascular tissue is made up of xylem tissue and phloem tissue. Xylem tissue transports water and nutrients from the roots upward. Phloem tissue... |
methods include grafting, cutting, layering, and micropropagation. 24 Plant species that complete their life cycle in one season are known as annuals. Biennials complete their life cycle in two seasons. In the first season, the plant has a vegetative phase, whereas in the next season, it completes its reproductive pha... |
tic nervous system decreases heart rate and blood pressure and increases digestion and blood flow to the skin. 26 The sensory-somatic nervous system transmits sensory information from the skin, muscles, and sensory organs to the CNS. It also sends motor commands from the CNS to the muscles, causing them to contract. 27... |
s and consists of osteons. Compact bone tissue is prominent in areas of bone at which stresses are applied in only a few directions. Spongy bone tissue forms the inner layer of all bones and consists of trabeculae. Spongy bone is prominent in areas of bones that are not heavily stressed or at which stresses arrive from... |
. (3) Annelids have nephridia which have a tubule with cilia. Excretion occurs through a pore called the nephridiopore. Annelids have a system for tubular reabsorption by a capillary network before excretion. (4) Malpighian tubules are found in some species of arthropods. They are usually found in pairs, and the number... |
to the anterior pituitary and cause the release of FSH and LH. FSH stimulates follicles on the ovary to grow and prepare the eggs for ovulation. As the follicles increase in size, they begin to release estrogen and a low level of progesterone into the blood. The level of estrogen rises to a peak, causing a spike in th... |
energy is available at each higher trophic level. 3 Figure 46.17 C: Nitrification by bacteria −). 10 D 11 B 12 D 13 C 14 converts nitrates (NO3 B 15 C 16 A 17 D 18 A 19 B 20 C 21 Food webs show interacting groups of different species and their many interconnections with each other and the environment. Food chains are ... |
ylogenetic tree into many closely related species adaptive radiation speciation when one species radiates out to form several other species Addison’s disease disorder caused by the hyposecretion of corticosteroids adduction movement of the limbs inward after abduction adenylate cyclase an enzyme that catalyzes the conv... |
very high rate arachnoid mater spiderweb-like middle layer of the meninges that cover the central nervous system arbuscular mycorrhiza mycorrhizal association in which the fungal hyphae enter the root cells and form extensive networks Arbuscular mycorrhizae mycorrhizae commonly involving Glomeromycetes in which the fun... |
ife that is built from smaller organic molecules biological nitrogen fixation conversion of atmospheric nitrogen into ammonia exclusively carried out by prokaryotes biology the study of living organisms and their interactions with one another and their environments bioluminescence generation and emission of light by an... |
ified cell theory cell wall rigid cell covering made of cellulose that protects the cell, provides structural support, and gives shape to the cell cell-mediated immune response adaptive immune response that is carried out by T cells cell-surface receptor cell-surface protein that transmits a signal from the exterior of... |
anaphase II of meiosis cohesion intermolecular forces between water molecules caused by the polar nature of water; responsible for surface tension coleoptile covering of the shoot tip, found in germinating monocot seeds College Biology Key Terms p. 2015 Textbookequity.org coleorhiza covering of the root tip, found in ... |
pended cytotoxic T lymphocyte (CTL) adaptive immune cell that directly kills infected cells via perforin and granzymes, and releases cytokines to enhance the immune response dead space area in the lung that lacks proper ventilation or perfusion dead zone area within an ecosystem in lakes and near the mouths of rivers w... |
a Hartig net that extends into the roots between cells Ectomycorrhizae mycorrhizae in which the fungal hyphae do not penetrate the root cells of the plant ectotherm animal incapable of maintaining a relatively constant internal body temperature Ediacaran period geological period (630–542 million years ago) when the old... |
hat binds first to an mRNA to initiate translation Eumetazoa group of animals with true differentiated tissues euploid individual with the appropriate number of chromosomes for their species eutherian mammal mammal that possesses a complex placenta, which connects a fetus to the mother; sometimes called placental mamma... |
us residual volume functional vital capacity (FVC) amount of air that can be forcibly exhaled after taking the deepest breath possible furcula wishbone formed by the fusing of the clavicles fusiform animal body shape that is tubular and tapered at both ends fusion method of entry by some enveloped viruses, where the vi... |
me protease that enters target cells through perforin and induces apoptosis in the target cells; used by NK cells and killer T cells gravitropism response of a plant growth in the same direction as gravity grazing food web type of food web in which the primary producers are either plants on land or phytoplankton in the... |
d individuals, not of the same species hybrid zone area where two closely related species continue to interact and reproduce, forming hybrids hybridization process of mating two individuals that differ with the goal of achieving a certain characteristic in their offspring hydrocarbon molecule that consists only of carb... |
ion between members of the same sex for a mate intraspecific competition competition between members of the same species introduction opening section of a scientific paper, which provides background information about what was known in the field prior to the research reported in the paper intron non–protein-coding inter... |
olar) connective tissue type of connective tissue with small amounts of cells, matrix, and fibers; found around blood vessels Lophotrochozoa clade of protostomes that exhibit a trochophore larvae stage or a lophophore feeding structure lower limb consists of the thigh, the leg, and the foot lung capacity measurement of... |
gh the cell, pulls replicated chromosomes to opposite ends of a dividing cell, and is the structural element of centrioles, flagella, and cilia microvilli cellular processes that increase the surface area of cells middle ear part of the hearing apparatus that functions to transfer energy from the tympanum to the oval w... |
for rapid DNA sequencing nitrification conversion of ammonium into nitrite and nitrate in soils nitrogen fixation process by which gaseous nitrogen is transformed, or “fixed” into more readily available forms such as ammonia nitrogenase enzyme that is responsible for the reduction of atmospheric nitrogen to ammonia nob... |
rs the surface of Earth oval window thin diaphragm between the middle and inner ears that receives sound waves from contact with the stapes bone of the middle ear ovarian cycle cycle of preparation of egg for ovulation and the conversion of the follicle to the corpus luteum ovary chamber that contains and protects the ... |
iate, a protein, or ADP photic zone portion of the ocean that light can penetrate College Biology Key Terms p. 2056 Textbookequity.org photoact ejection of an electron from a reaction center using the energy of an absorbed photon photoautotroph organism capable of producing its own organic compounds from sunlight photo... |
on the cytoplasmic side of the plasma membrane precapillary sphincter small muscle that controls blood circulation in the capillary beds predator animal species that hunt and are carnivores or “flesh eaters” preinitiation complex cluster of transcription factors and other proteins that recruit RNA polymerase II for tr... |
nd female in one cross become the respective traits of the female and male in the other cross recombinant DNA combination of DNA fragments generated by molecular cloning that does not exist in nature; also known as a chimeric molecule recombinant protein protein product of a gene derived by molecular cloning recombinat... |
ticles between 0.1–2 mm in diameter saprobe organism that derives nutrients from decaying organic matter; also saprophyte saprophyte plant that does not have chlorophyll and gets its food from dead matter sarcolemma plasma membrane of a skeletal muscle fiber sarcomere functional unit of skeletal muscle Sarcopterygii lo... |
e walls of hollow organs such as the intestines, stomach, and urinary bladder, and around passages such as the respiratory tract and blood vessels soil particles between 0.002 and 0.1 mm in diameter soil profile vertical section of a soil solar intensity amount of solar power energy the sun emits in a given amount of t... |
yndesmosis joint in which the bones are connected by a band of connective tissue, allowing for more movement than in a suture synergid type of cell found in the ovule sac that secretes chemicals to guide the pollen tube towards the egg synovial joint only joint that has a space between the adjoining bones systematics f... |
ross a membrane by binding it transporter specific carrier proteins or pumps that facilitate movement transverse (horizontal) plane plane cutting through an animal separating the individual into upper and lower portions transversion substitution when a purine is replaced by a pyrimidine or a pyrimidine is replaced by a... |
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