Biology Test #3. Name: Class: Date: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

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1 Name: Class: Date: ID: A Biology Test #3 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Energy is required for a variety of life processes including a. growth and reproduction. b. movement. c. transport of certain materials across cell membranes. 2. Based on the cycle of photosynthesis and cellular respiration, one can say that the ultimate original source of energy for all living things on Earth is a. carbohydrates. c. the sun. b. water. d. carbon dioxide. 3. The process whereby plants capture energy and make complex molecules is known as a. homeostasis. c. photosynthesis. b. evolution. d. development. 4. Suspended in the fluid stroma of chloroplasts are a. organelles called eukaryotes. b. numerous mitochondrial membranes. c. small coins that provide energy. d. stacks of thylakoids called grana. 5. The sun is considered the ultimate source of energy for life on Earth because a. all organisms carry out photosynthesis. b. all organisms carry out cellular respiration. c. either photosynthetic organisms or organisms that have eaten them provide energy for all other organisms on Earth. d. the sun heats the Earth's atmosphere. 6. Chlorophyll is green because a. it absorbs green wavelengths of light. b. it absorbs blue and yellow wavelengths, which make green. c. photons of green wavelengths are reflected. d. of an optical illusion caused by transmitted light. 7. As a result of diffusion, the concentration of many types of substances a. always remains greater inside a membrane. b. eventually becomes balanced on both sides of a membrane. c. always remains greater on the outside of a membrane. d. becomes imbalanced on both sides of a membrane. 8. Diffusion takes place a. only through a lipid bilayer membrane. b. from an area of low concentration to an area of high concentration. c. only in liquids. d. from an area of high concentration to an area of low concentration. 1

2 Name: ID: A Concentration of Water and Solutes in Four Adjacent Cells 9. Refer to the illustration above. Which cell is most likely to lose both water molecules and solute molecules as the system approaches equilibrium? a. cell A c. cell C b. cell B d. cell D 10. Refer to the illustration above. In this system, solute molecules in cell B are most likely to a. remain in cell B. c. diffuse into cell A. b. adhere to cell B's membrane. d. diffuse into cell D 11. Refer to the illustration above. In this system, water molecules are most likely to diffuse in which direction? a. from A to B c. from D to C b. from B to D d. from C to A 12. The dispersal of ink in a beaker of water is an example of a. diffusion. c. active transport. b. osmosis. d. endocytosis. 13. Which of the following does not expend energy? a. diffusion c. active transport b. chemiosmosis d. a sodium-potassium pump 14. The process by which water passes into or out of a cell is called a. solubility. c. selective transport. b. osmosis. d. endocytosis. 15. Refer to the illustration above. The process shown is called a. osmosis. c. active transport. b. facilitated diffusion. d. diffusion. 2

3 Name: ID: A 16. Molecules that are too large to be moved across a cell membrane can be removed from the cell by a. diffusion. c. lipid carriers. b. exocytosis. d. osmosis. 17. Molecules that are too large to be moved through the membrane can be transported into the cell by a. osmosis. c. lipid carriers. b. endocytosis. d. diffusion. 18. The smallest units of life in all living things are a. cells. c. cytoplasm. b. mitochondria. d. Golgi apparatus. 19. When the volume of a cell increases, its surface area a. increases at the same rate. c. increases at a faster rate. b. remains the same. d. increases at a slower rate. 20. Surface area is an important factor in limiting cell growth because a. the cell can burst if the membrane becomes too large. b. materials cannot enter the cell if it is too large. c. the cell may become too large to take in enough food and to remove enough wastes. d. waste products cannot leave the cell if it is too small. 21. One difference between prokaryotes and eukaryotes is that a. nucleic acids are found only in prokaryotes. b. mitochondria are found in larger quantities in eukaryotes. c. Golgi vesicles are found only in prokaryotes. d. prokaryotes have no nuclear membrane. 22. Which of the following is an example of a prokaryotic cell? a. amoeba c. bacterium b. virus d. liver cell 23. Cell membranes a. are only found on a small number of cells. b. contain genes. c. are made of DNA. d. are thin coverings that surround cells. 24. The structure that regulates what enters and leaves the cell is called a. the nucleus. c. the nuclear membrane. b. the cell wall. d. the cell membrane. 25. A particularly active cell might contain large numbers of a. chromosomes. c. mitochondria. b. vacuoles. d. walls. 26. In which of the following organelles is a cell s ATP produced? a. mitochondrion c. Golgi apparatus b. endoplasmic reticulum d. lysosome 27. Numerous threadlike organelles that protrude from the surface of a cell and are packed in tight rows are called a. flagella. c. actin filaments. b. microtubules. d. cilia. 28. Proteins are made in cells on the a. mitochondria. c. nucleus. b. ribosomes. d. cell membrane. 3

4 Name: ID: A 29. The packaging and distribution center of the cell is the a. nucleus. c. central vacuole. b. Golgi apparatus. d. nuclear envelope. 30. All the following are found in both plant and animal cells, except a. a cell wall. c. mitochondria. b. a cell membrane. d. the endoplasmic reticulum. 31. How are chloroplasts like mitochondria? a. They can both use energy from sunlight. b. They look alike. c. They both manufacture food and release energy. d. They are both found in animal cells. 32. The organelles associated with photosynthesis are the a. mitochondria. c. Golgi apparatus. b. chloroplasts. d. vacuoles. 33. The organelles in plant cells that contain a green pigment are the a. mitochondria. c. chloroplasts. b. bilayer lipids. d. Golgi apparatus. 34. Plant cells have large membrane-bound spaces in which water, waste products, and nutrients are stored. These places are known as a. mitochondria. c. Golgi apparatus. b. chloroplasts. d. vacuoles. 35. Plant cells a. do not contain mitochondria. b. have a cell wall instead of a cell membrane. c. have a large vacuole instead of a Golgi apparatus. d. have chloroplasts and a cell wall. 36. Nonpolar molecules have a. no negative or positive poles. c. only a negative pole. b. both negative and positive poles. d. only a positive pole. 37. A molecule that has a partial positive charge on one side and a partial negative charge on the other side is called a a. nonpolar molecule. c. charged molecule. b. polar molecule. d. bipolar molecule. 38. Water is important to life because it a. surrounds all cells. b. is found inside cells. c. influences the shape of the a membrane. 39. All organic compounds contain the element a. C. c. Ca. b. N. d. Na. 40. Which of the following is a carbohydrate? a. DNA c. wax b. insulin d. sucrose 41. Which organic molecule below is classified as a carbohydrate? a. amino acid c. nucleotide b. CH 2 chain d. sugar 4

5 Name: ID: A 42. Polysaccharides are a. carbohydrates. c. proteins. b. lipids. d. unsaturated fats. 43. Amino acids are monomers of a. disaccharides. c. nucleotides. b. proteins. d. steroids. 44. Which organic molecule below is most closely related to proteins? a. amino acids c. nucleotides b. CH 2 chains d. sugars 45. Lipids are a. polar molecules. c. protein molecules. b. similar to water molecules. d. nonpolar molecules. 46. All of the following are examples of lipids except a. saturated fats. c. cholesterol. b. starch. d. earwax. 47. Lipids are soluble in a. water. c. oil. b. salt water. 48. Which of the following is not an organic macromolecule? a. carbohydrate c. lipid b. ice d. nucleic acid 49. Nucleic acids include a. chlorophyll and retinal. c. lipids and sugars. b. DNA and RNA. d. glucose and glycogen. 50. Atoms are composed of a. protons with a positive charge. c. electrons with a negative charge. b. neutrons with no charge. 51. The electrons of an atom a. are found in the nucleus along with the protons. b. orbit the nucleus in various energy levels. c. have a positive charge. d. are attracted to the positive charge of neutrons. 52. Which of the following states of matter contain(s) particles that are tightly linked together in a definite shape? a. solid c. gas b. liquid d. solid and liquid 5

6 Name: ID: A Assume that each of the atoms below requires eight electrons to fill its outer energy level. 53. Refer to the illustration above. Which of the atoms is chemically stable? a. Atom A c. Atom C b. Atom B d. None of the above 54. Refer to the illustration above. If Atom C interacted with Atom B to form an ionic bond, Atom C would a. lose 6 electrons. c. gain 5 electrons. b. gain 2 electrons. d. move 4 electrons into the nucleus. 55. Refer to the illustration above. If Atom B interacted with Atom C to form an ionic bond, Atom B would a. gain 6 electrons. c. lose 2 electrons. b. lose 4 electrons. d. move 2 electrons into the nucleus. 56. Because carbon has four electrons in its outer energy level, a. it can form bonds with carbon atoms only. b. these atoms are naturally chemically stable. c. it can react with up to four other atoms to form covalent bonds. d. it cannot react with anything other than organic molecules. 57. Sharing of electrons in the outer energy levels of two atoms a. results in ion formation. b. occurs in covalent bonds. c. only occurs if both are atoms of the same element. d. is found only among carbon atoms. 58. An atom that has gained or lost electrons is called a(n) a. molecule. c. ion. b. nucleon. d. element. 59. If the products of a chemical reaction contain less energy than the reactants, the reaction must a. involve the release of energy. c. be an energy-storing reaction. b. result in the production of sugar. d. occur in the cytoplasm of cells. 60. Enzymes a. are able to heat up molecules so that they can react. b. provide CO 2 for chemical reactions. c. are biological catalysts. d. absorb excess heat so that reactions occur at low temperatures. 61. The process of cellular respiration a. is performed only by organisms that are incapable of photosynthesis. b. breaks down food molecules to release stored energy. c. occurs before plants are able to carry out photosynthesis. d. occurs only in animals. 6

7 Name: ID: A 62. When glycolysis occurs, a. a molecule of glucose is split. b. two molecules of pyruvate are made. c. some ATP is produced. 63. The name of the process that takes place when organic compounds are broken down in the absence of oxygen is a. respiration. c. fermentation. b. oxidation. 64. When muscles are exercised extensively in the absence of sufficient oxygen, a. a large amount of ATP is formed. c. lactic acid is produced. b. NADH molecules split. d. oxidative respiration ceases. 65. With oxygen present, the Krebs cycle and the electron transport chain a. provide organisms an alternative to glycolysis. b. produce most of the ATP needed for life. c. break down glucose to produce carbon dioxide, water, and ATP. 66. ATP a. contains five phosphate groups. b. is essential for a cell to perform all the tasks necessary for life. c. is found only in bacteria. 67. Glycolysis and oxidative respiration are different in that a. glycolysis occurs on the cell membrane, while oxidative respiration occurs in mitochondria. b. glycolysis occurs only in photosynthesis, while oxidative respiration is part of cellular respiration. c. glycolysis occurs in the absence of oxygen, while oxidative respiration requires oxygen. d. Both of these terms are different names for the same process. 68. The source of oxygen produced during photosynthesis is a. carbon dioxide. c. the air. b. water. d. glucose. 69. The major atmospheric byproduct of photosynthesis is a. nitrogen. c. water. b. carbon dioxide. d. oxygen. 7

8 Name: ID: A 70. Refer to the illustration above. Graph A demonstrates that the rate of photosynthesis a. decreases in response to increasing light intensity. b. increases indefinitely in response to increasing light intensity. c. increases in response to increasing light intensity, but only to a certain point. d. is unaffected by changes in light intensity. 71. Refer to the illustration above. Taken together, these graphs demonstrate that a. photosynthesis is independent of environmental influences. b. increases in light intensity cause increases in temperature. c. as the rate of photosynthesis increases, the temperature of the plant eventually decreases. d. the rate of photosynthesis is affected by changes in the plant's environment. 72. Ridding the cell of material by discharging it from sacs at the cell surface is called a. chemiosmosis. c. exocytosis. b. exorcism. d. endocytosis. 73. The cell membrane a. encloses the contents of a cell. b. allows material to enter and leave the cell. c. is selectively permeable. 74. One important organelle that helps maintain homeostasis by moving supplies from one part of the cell to the other is the a. endoplasmic reticulum. c. Golgi apparatus. b. mitochondrion. d. cytoplasm. 75. Which of the following is the correct order of organization of structures in living things, from simplest to most complex? a. organ systems, organs, tissues, cells b. tissues, cells, organs, organ systems c. cells, tissues, organ systems, organs d. cells, tissues, organs, organ systems 8

9 ID: A Biology Test #3 Answer Section MULTIPLE CHOICE 1. ANS: D 2. ANS: C 3. ANS: C 4. ANS: D 5. ANS: C 6. ANS: C 7. ANS: B 8. ANS: D 9. ANS: D 10. ANS: C 11. ANS: D 12. ANS: A 13. ANS: A 14. ANS: B 15. ANS: D 16. ANS: B 17. ANS: B 18. ANS: A 19. ANS: D 20. ANS: C 21. ANS: D 22. ANS: C 23. ANS: D 24. ANS: D 25. ANS: C 26. ANS: A 27. ANS: D 28. ANS: B 29. ANS: B 30. ANS: A 31. ANS: C 32. ANS: B 33. ANS: C 34. ANS: D 35. ANS: D 36. ANS: A 37. ANS: B 38. ANS: D 39. ANS: A 40. ANS: D 1

10 ID: A 41. ANS: D 42. ANS: A 43. ANS: B 44. ANS: A 45. ANS: D 46. ANS: B 47. ANS: C 48. ANS: B 49. ANS: B 50. ANS: D 51. ANS: B 52. ANS: A 53. ANS: A 54. ANS: B 55. ANS: C 56. ANS: C 57. ANS: B 58. ANS: C 59. ANS: A 60. ANS: C 61. ANS: B 62. ANS: D 63. ANS: C 64. ANS: C 65. ANS: D 66. ANS: B 67. ANS: C 68. ANS: B 69. ANS: D 70. ANS: C 71. ANS: D 72. ANS: C 73. ANS: D 74. ANS: A 75. ANS: D 2

11 Name: Class: Date: ID: B Biology Test #3 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. When muscles are exercised extensively in the absence of sufficient oxygen, a. oxidative respiration ceases. c. lactic acid is produced. b. NADH molecules split. d. a large amount of ATP is formed. 2. Based on the cycle of photosynthesis and cellular respiration, one can say that the ultimate original source of energy for all living things on Earth is a. carbohydrates. c. water. b. the sun. d. carbon dioxide. 3. Molecules that are too large to be moved across a cell membrane can be removed from the cell by a. osmosis. c. exocytosis. b. diffusion. d. lipid carriers. 4. Amino acids are monomers of a. proteins. c. disaccharides. b. steroids. d. nucleotides. 5. Numerous threadlike organelles that protrude from the surface of a cell and are packed in tight rows are called a. cilia. c. actin filaments. b. flagella. d. microtubules. 6. Refer to the illustration above. Graph A demonstrates that the rate of photosynthesis a. is unaffected by changes in light intensity. b. increases in response to increasing light intensity, but only to a certain point. c. increases indefinitely in response to increasing light intensity. d. decreases in response to increasing light intensity. 7. Refer to the illustration above. Taken together, these graphs demonstrate that a. increases in light intensity cause increases in temperature. b. photosynthesis is independent of environmental influences. c. as the rate of photosynthesis increases, the temperature of the plant eventually decreases. d. the rate of photosynthesis is affected by changes in the plant's environment. 1

12 Name: ID: B 8. The process whereby plants capture energy and make complex molecules is known as a. development. c. evolution. b. photosynthesis. d. homeostasis. 9. Nonpolar molecules have a. no negative or positive poles. c. only a positive pole. b. only a negative pole. d. both negative and positive poles. 10. The structure that regulates what enters and leaves the cell is called a. the cell wall. c. the nuclear membrane. b. the nucleus. d. the cell membrane. 11. Surface area is an important factor in limiting cell growth because a. materials cannot enter the cell if it is too large. b. the cell may become too large to take in enough food and to remove enough wastes. c. the cell can burst if the membrane becomes too large. d. waste products cannot leave the cell if it is too small. 12. The process by which water passes into or out of a cell is called a. solubility. c. endocytosis. b. selective transport. d. osmosis. 13. Which organic molecule below is classified as a carbohydrate? a. nucleotide c. sugar b. amino acid d. CH 2 chain 14. Polysaccharides are a. unsaturated fats. c. carbohydrates. b. lipids. d. proteins. Assume that each of the atoms below requires eight electrons to fill its outer energy level. 15. Refer to the illustration above. If Atom C interacted with Atom B to form an ionic bond, Atom C would a. gain 5 electrons. c. move 4 electrons into the nucleus. b. gain 2 electrons. d. lose 6 electrons. 16. Refer to the illustration above. Which of the atoms is chemically stable? a. Atom C c. Atom A b. Atom B d. None of the above 17. Refer to the illustration above. If Atom B interacted with Atom C to form an ionic bond, Atom B would a. move 2 electrons into the nucleus. c. lose 2 electrons. b. gain 6 electrons. d. lose 4 electrons. 2

13 Name: ID: B 18. Which of the following is an example of a prokaryotic cell? a. liver cell c. amoeba b. virus d. bacterium 19. In which of the following organelles is a cell s ATP produced? a. endoplasmic reticulum c. lysosome b. Golgi apparatus d. mitochondrion Concentration of Water and Solutes in Four Adjacent Cells 20. Refer to the illustration above. In this system, water molecules are most likely to diffuse in which direction? a. from A to B c. from C to A b. from D to C d. from B to D 21. Refer to the illustration above. Which cell is most likely to lose both water molecules and solute molecules as the system approaches equilibrium? a. cell C c. cell D b. cell B d. cell A 22. Refer to the illustration above. In this system, solute molecules in cell B are most likely to a. diffuse into cell D c. adhere to cell B's membrane. b. diffuse into cell A. d. remain in cell B. 23. When glycolysis occurs, a. two molecules of pyruvate are made. b. a molecule of glucose is split. c. some ATP is produced. 24. The sun is considered the ultimate source of energy for life on Earth because a. all organisms carry out photosynthesis. b. either photosynthetic organisms or organisms that have eaten them provide energy for all other organisms on Earth. c. all organisms carry out cellular respiration. d. the sun heats the Earth's atmosphere. 25. Cell membranes a. contain genes. b. are made of DNA. c. are only found on a small number of cells. d. are thin coverings that surround cells. 3

14 Name: ID: B 26. As a result of diffusion, the concentration of many types of substances a. becomes imbalanced on both sides of a membrane. b. always remains greater inside a membrane. c. eventually becomes balanced on both sides of a membrane. d. always remains greater on the outside of a membrane. 27. One important organelle that helps maintain homeostasis by moving supplies from one part of the cell to the other is the a. mitochondrion. c. Golgi apparatus. b. cytoplasm. d. endoplasmic reticulum. 28. Diffusion takes place a. from an area of low concentration to an area of high concentration. b. only in liquids. c. from an area of high concentration to an area of low concentration. d. only through a lipid bilayer membrane. 29. If the products of a chemical reaction contain less energy than the reactants, the reaction must a. occur in the cytoplasm of cells. c. be an energy-storing reaction. b. result in the production of sugar. d. involve the release of energy. 30. Water is important to life because it a. influences the shape of the a membrane. b. surrounds all cells. c. is found inside cells. 31. Proteins are made in cells on the a. cell membrane. c. nucleus. b. ribosomes. d. mitochondria. 32. Lipids are a. polar molecules. c. protein molecules. b. similar to water molecules. d. nonpolar molecules. 33. Glycolysis and oxidative respiration are different in that a. glycolysis occurs on the cell membrane, while oxidative respiration occurs in mitochondria. b. glycolysis occurs only in photosynthesis, while oxidative respiration is part of cellular respiration. c. Both of these terms are different names for the same process. d. glycolysis occurs in the absence of oxygen, while oxidative respiration requires oxygen. 34. Plant cells have large membrane-bound spaces in which water, waste products, and nutrients are stored. These places are known as a. vacuoles. c. Golgi apparatus. b. mitochondria. d. chloroplasts. 35. The organelles in plant cells that contain a green pigment are the a. chloroplasts. c. bilayer lipids. b. Golgi apparatus. d. mitochondria. 36. When the volume of a cell increases, its surface area a. increases at a faster rate. c. increases at the same rate. b. increases at a slower rate. d. remains the same. 37. All organic compounds contain the element a. Na. c. C. b. Ca. d. N. 4

15 Name: ID: B 38. The electrons of an atom a. are found in the nucleus along with the protons. b. orbit the nucleus in various energy levels. c. are attracted to the positive charge of neutrons. d. have a positive charge. 39. Lipids are soluble in a. salt water. c. water. b. oil. 40. Refer to the illustration above. The process shown is called a. osmosis. c. active transport. b. facilitated diffusion. d. diffusion. 41. The major atmospheric byproduct of photosynthesis is a. oxygen. c. nitrogen. b. water. d. carbon dioxide. 42. Chlorophyll is green because a. it absorbs green wavelengths of light. b. photons of green wavelengths are reflected. c. it absorbs blue and yellow wavelengths, which make green. d. of an optical illusion caused by transmitted light. 43. The packaging and distribution center of the cell is the a. central vacuole. c. nuclear envelope. b. Golgi apparatus. d. nucleus. 44. The name of the process that takes place when organic compounds are broken down in the absence of oxygen is a. oxidation. c. respiration. b. fermentation. 45. One difference between prokaryotes and eukaryotes is that a. nucleic acids are found only in prokaryotes. b. mitochondria are found in larger quantities in eukaryotes. c. Golgi vesicles are found only in prokaryotes. d. prokaryotes have no nuclear membrane. 46. Nucleic acids include a. lipids and sugars. c. DNA and RNA. b. glucose and glycogen. d. chlorophyll and retinal. 5

16 Name: ID: B 47. A molecule that has a partial positive charge on one side and a partial negative charge on the other side is called a a. nonpolar molecule. c. bipolar molecule. b. polar molecule. d. charged molecule. 48. The process of cellular respiration a. occurs before plants are able to carry out photosynthesis. b. is performed only by organisms that are incapable of photosynthesis. c. breaks down food molecules to release stored energy. d. occurs only in animals. 49. A particularly active cell might contain large numbers of a. vacuoles. c. walls. b. mitochondria. d. chromosomes. 50. Which of the following states of matter contain(s) particles that are tightly linked together in a definite shape? a. solid and liquid c. gas b. liquid d. solid 51. An atom that has gained or lost electrons is called a(n) a. nucleon. c. element. b. ion. d. molecule. 52. Molecules that are too large to be moved through the membrane can be transported into the cell by a. osmosis. c. lipid carriers. b. endocytosis. d. diffusion. 53. Suspended in the fluid stroma of chloroplasts are a. stacks of thylakoids called grana. b. numerous mitochondrial membranes. c. organelles called eukaryotes. d. small coins that provide energy. 54. The organelles associated with photosynthesis are the a. Golgi apparatus. c. vacuoles. b. mitochondria. d. chloroplasts. 55. ATP a. contains five phosphate groups. b. is essential for a cell to perform all the tasks necessary for life. c. is found only in bacteria. 56. Energy is required for a variety of life processes including a. growth and reproduction. b. transport of certain materials across cell membranes. c. movement. 57. Enzymes a. are able to heat up molecules so that they can react. b. absorb excess heat so that reactions occur at low temperatures. c. provide CO 2 for chemical reactions. d. are biological catalysts. 6

17 Name: ID: B 58. The cell membrane a. encloses the contents of a cell. b. is selectively permeable. c. allows material to enter and leave the cell. 59. Which of the following is the correct order of organization of structures in living things, from simplest to most complex? a. cells, tissues, organs, organ systems b. tissues, cells, organs, organ systems c. cells, tissues, organ systems, organs d. organ systems, organs, tissues, cells 60. How are chloroplasts like mitochondria? a. They are both found in animal cells. b. They both manufacture food and release energy. c. They look alike. d. They can both use energy from sunlight. 61. The dispersal of ink in a beaker of water is an example of a. diffusion. c. endocytosis. b. active transport. d. osmosis. 62. The smallest units of life in all living things are a. cells. c. mitochondria. b. cytoplasm. d. Golgi apparatus. 63. Which of the following is a carbohydrate? a. DNA c. insulin b. wax d. sucrose 64. Ridding the cell of material by discharging it from sacs at the cell surface is called a. exocytosis. c. endocytosis. b. exorcism. d. chemiosmosis. 65. Sharing of electrons in the outer energy levels of two atoms a. only occurs if both are atoms of the same element. b. occurs in covalent bonds. c. results in ion formation. d. is found only among carbon atoms. 66. The source of oxygen produced during photosynthesis is a. carbon dioxide. c. the air. b. glucose. d. water. 67. Because carbon has four electrons in its outer energy level, a. it can react with up to four other atoms to form covalent bonds. b. these atoms are naturally chemically stable. c. it cannot react with anything other than organic molecules. d. it can form bonds with carbon atoms only. 68. Which of the following is not an organic macromolecule? a. nucleic acid c. ice b. carbohydrate d. lipid 7

18 Name: ID: B 69. Plant cells a. have a cell wall instead of a cell membrane. b. do not contain mitochondria. c. have chloroplasts and a cell wall. d. have a large vacuole instead of a Golgi apparatus. 70. All of the following are examples of lipids except a. cholesterol. c. saturated fats. b. earwax. d. starch. 71. Atoms are composed of a. electrons with a negative charge. c. protons with a positive charge. b. neutrons with no charge. 72. Which organic molecule below is most closely related to proteins? a. amino acids c. nucleotides b. CH 2 chains d. sugars 73. Which of the following does not expend energy? a. chemiosmosis c. a sodium-potassium pump b. active transport d. diffusion 74. All the following are found in both plant and animal cells, except a. a cell wall. c. the endoplasmic reticulum. b. a cell membrane. d. mitochondria. 75. With oxygen present, the Krebs cycle and the electron transport chain a. provide organisms an alternative to glycolysis. b. break down glucose to produce carbon dioxide, water, and ATP. c. produce most of the ATP needed for life. 8

19 ID: B Biology Test #3 Answer Section MULTIPLE CHOICE 1. ANS: C 2. ANS: B 3. ANS: C 4. ANS: A 5. ANS: A 6. ANS: B 7. ANS: D 8. ANS: B 9. ANS: A 10. ANS: D 11. ANS: B 12. ANS: D 13. ANS: C 14. ANS: C 15. ANS: B 16. ANS: C 17. ANS: C 18. ANS: D 19. ANS: D 20. ANS: C 21. ANS: C 22. ANS: B 23. ANS: D 24. ANS: B 25. ANS: D 26. ANS: C 27. ANS: D 28. ANS: C 29. ANS: D 30. ANS: D 31. ANS: B 32. ANS: D 33. ANS: D 34. ANS: A 35. ANS: A 36. ANS: B 37. ANS: C 38. ANS: B 39. ANS: B 40. ANS: D 1

20 ID: B 41. ANS: A 42. ANS: B 43. ANS: B 44. ANS: B 45. ANS: D 46. ANS: C 47. ANS: B 48. ANS: C 49. ANS: B 50. ANS: D 51. ANS: B 52. ANS: B 53. ANS: A 54. ANS: D 55. ANS: B 56. ANS: D 57. ANS: D 58. ANS: D 59. ANS: A 60. ANS: B 61. ANS: A 62. ANS: A 63. ANS: D 64. ANS: A 65. ANS: B 66. ANS: D 67. ANS: A 68. ANS: C 69. ANS: C 70. ANS: D 71. ANS: D 72. ANS: A 73. ANS: D 74. ANS: A 75. ANS: D 2

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