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Cellular Energetics Practice Quiz

100 Questions  I  By Brownie2007
Cellular Energetics Practice Quiz
Quiz over AP Biology Unit 3: Cellular Energetics (Cell Respiration and Photosynthesis)

  
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Question Excerpt

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1.  Which of the following describe(s) some aspect of metabolism?
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2.  Which term most precisely describes the cellular process of breaking down large molecules into smaller ones?
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3.  Which of the following statements correctly describe(s) catabolic pathways?
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4.  Which of the following is (are) true for anabolic pathways?
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5.  What is the term for metabolic pathways that release stored energy by breaking down complex molecules?
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6.  What is the term used for the metabolic pathway in which glucose (C6H12O6) is degraded to carbon dioxide (CO2) and water?
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7. 
  Which of the following statements concerning the metabolic degradation of glucose (C6H12O6) to carbon dioxide (CO2) and water is (are) true?
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8.  Which of the following statements is (are) correct about an oxidation-reduction (or redox) reaction?
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9.  Which statement is not correct with regard to redox (oxidation-reduction) reactions?
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10.  The molecule that functions as the reducing agent (electron donor) in a redox or oxidation-reduction reaction
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11.  Why does the oxidation of organic compounds by molecular oxygen to produce CO2 and water release free energy?
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12.  Which of the following statements describes the results of this reaction? C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O + Energy
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13.  When a glucose molecule loses a hydrogen atom (not a hydrogen ion) as the result of an oxidation-reduction reaction, the molecule becomes
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14.  Which of the following statements about NAD+ is false?
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15.  In order for NAD+ to remove electrons from glucose or other organic molecules, which of the following must be true?
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16.  Where does glycolysis takes place?
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17.  During glycolysis, when glucose is catabolized to pyruvate, most of the energy of glucose is
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18.  Why is ATP an important molecule in metabolism?
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19.  The hydrolysis of ATP to ADP and inorganic phosphate (ATP + H2O --> ADP + Pi )
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20.  When 10,000 molecules of ATP are hydrolyzed to ADP and Pi in a test tube, about twice as much heat is liberated as when a cell hydrolyzes the same amount of ATP. Which of the following is the best explanation for this observation?
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21.  ATP generally energizes a cellular process by
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22.  What term is used to describe the transfer of free energy from catabolic pathways to anabolic pathways?
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23.  Which of the following statements is true concerning catabolic pathways?
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24.  Which of the following statements regarding ATP is (are) correct?
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25.  Which of the following statements is (are) true about enzyme-catalyzed reactions?
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26.  How can one increase the rate of a chemical reaction?
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27.  Sucrose is a disaccharide, composed of the monosaccharides glucose and fructose. The hydrolysis of sucrose by the enzyme sucrase results in
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28.  Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's
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29.  A solution of starch at room temperature does not readily decompose to form a solution of simple sugars because
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30.  An enzyme catalyzes a reaction by
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31.  During a laboratory experiment, you discover that an enzyme-catalyzed reaction has a mc031-1.jpgG of -20 kcal/mol. If you double the amount of enzyme in the reaction, what will be the mc031-2.jpgG for the new reaction?
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32.  The active site of an enzyme is the region that
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33.  According to the induced fit hypothesis of enzyme catalysis, which of the following is CORRECT?
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34.  Many different things can alter enzyme activity. Which of the following underlie all types of enzyme regulation?
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35.  As temperature decreases, the rate of an enzyme-catalyzed reaction also decreases. Which of the following explain(s) why this occurs?
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36.  What is a nonprotein "helper" of an enzyme molecule called?
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37.  Which of the following is true of enzymes?
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38.  The mechanism in which the end product of a metabolic pathway inhibits an earlier step in the pathway is known as
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39.  Which of the following statements is true regarding enzyme cooperativity?
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40.  How does a non-competitive inhibitor decrease the rate of an enzyme reaction?
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41.  In addition to ATP, what are the end products of glycolysis?
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42. 
  The free energy for the oxidation of glucose to CO2 and water is -686 kcal/mole and the free energy for the reduction of NAD+ to NADH is +53 kcal/mole. Why are only two molecules of NADH formed during glycolysis when it appears that as many as a dozen could be formed?
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43.  Starting with one molecule of glucose, the "net" products of glycolysis are
44.  A molecule that is phosphorylated
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45.  During cellular respiration, acetyl CoA accumulates in which location?
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46.  How many carbon atoms are fed into the citric acid cycle as a result of the oxidation of one molecule of pyruvate?
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47.  Starting with one molecule of isocitrate and ending with fumarate, what is the maximum number of ATP molecules that could be made through substrate-level phosphorylation?
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48.  Carbon skeletons for amino acid biosynthesis are supplied by intermediates of the citric acid cycle. Which intermediate would supply the carbon skeleton for synthesis of a five-carbon amino acid?
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49.  Starting with one molecule of citrate and ending with oxaloacetate, how many ATP molecules can be formed from oxidative phosphorylation (chemiosmosis)?
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50.  How many molecules of carbon dioxide (CO2) would be produced by five turns of the citric acid cycle?
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51.  How many reduced dinucleotides would be produced with four turns of the citric acid cycle?
52.  Starting with citrate, how many of the following would be produced with three turns of the citric acid cycle?
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53.  Carbon dioxide (CO2) is released during which of the following stages of cellular respiration?
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54.  Where do the catabolic products of fatty acid breakdown enter into the citric acid cycle?
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55.  Where are the proteins of the electron transport chain located?
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56.  Which of the following describes the sequence of electron carriers in the electron transport chain, starting with the least electronegative?
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57.  During aerobic respiration, which of the following directly donates electrons to the electron transport chain at the lowest energy level?
58.  Inside an active mitochondrion, most electrons follow which pathway?
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59.  During oxidative phosphorylation, H2O is formed. Where does the oxygen for the synthesis of the water come from?
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60.  Which metabolic process is most closely associated with intracellular membranes?
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61.  In chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + Pi to ATP?
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62.  Energy released by the electron transport chain is used to pump H+ ions into which location?
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63.  During aerobic cellular respiration, a proton gradient in mitochondria is generated by ____ and used primarily for ____.
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64.  A major function of the mitochondrial inner membrane is the conversion of energy from electrons to the stored energy of the phosphate bond in ATP. To accomplish this function, the inner mitochondrial membrane must have all of the following features except
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65.  When hydrogen ions are pumped from the mitochondrial matrix across the inner membrane and into the intermembrane space, the result is the
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66.  The primary function of the mitochondrion is the production of ATP. To carry out this function, the mitochondrion must have all of the following except
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67.  How many molecules of carbon dioxide (CO2) would be released from the complete aerobic respiration of a molecule of sucrose (C12H22 O11), a disaccharide?
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68.  Each time a molecule of glucose (C6H12O6) is completely oxidized via aerobic respiration, how many oxygen molecules (O2). are required?
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69.  Which of the following produces the most ATP when glucose (C6H12O6) is completely oxidized to carbon dioxide (CO2) and water?
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70.  Assume a mitochondrion contains 58 NADH and 19 FADH2. If each of the 77 dinucleotides were used, approximately how many ATP molecules could be generated as a result of oxidative phosphorylation (chemiosmosis)?
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71.  When glucose (C6H12O6) is oxidized to CO2 and water in cellular respiration, approximately 40% of the energy content of glucose is transferred to
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72.  Which of the following normally occurs whether or not oxygen (O2) is present?
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73.  Which of the following occurs in the cytosol of the cell?
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74.  Which metabolic pathway is common to both cellular respiration and fermentation?
75.  The ATP made during fermentation is generated by which of the following?
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76.  In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the production of
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77.  The function of both alcohol fermentation and lactic acid fermentation is to
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78.  Which of the following is not true concerning the cellular compartmentation of the steps of respiration or fermentation?
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79.  An organism is discovered that consumes a considerable amount of sugar, yet does not gain much weight when denied air. Curiously, the consumption of sugar increases as air is removed from the organism's environment, but the organism seems to thrive even in the absence of air. When returned to normal air, the organism does fine. Which of the following best describes the organism?
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80.  You have a friend who lost 7 kg (about 15 pounds) of fat on a "low carb" diet. How did the fat leave her body?
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81.  Phosphofructokinase is an important control enzyme in the regulation of cellular respiration. Which of the following statements concerning phosphofructokinase is not true?
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82.  Organisms that can exist with light as an energy source and an inorganic form of carbon and other raw materials
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83.  Which type of organism obtains energy by metabolizing molecules produced by other organisms?
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84.  The early suggestion that the oxygen (O2) liberated from plants during photosynthesis comes from water was
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85.  If photosynthesizing green algae are provided with CO2 synthesized with heavy oxygen (18O), later analysis will show that all but one of the following compounds produced by the algae contain the 18O label. That one exception is
86.  What is the primary function of the light reactions of photosynthesis?
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87.  What are the products of the light reactions that are subsequently used by the Calvin cycle?
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88.  Where does the Calvin cycle take place?
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89.  A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are not being absorbed by this pigment?
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90.  What wavelength of light is most effective in driving photosynthesis?
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91.  All of the events listed below occur in the light reactions of photosynthesis except
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92.  Which of the following statements about the light reactions of photosynthesis are true?
93.  All of the following are directly associated with photosystem II except
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94.  Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be
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95.  Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damage will have the most direct effect on which of the following processes?
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96.  What does the chemiosmotic process in chloroplasts involve?
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97.  Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then transferred in the dark to a pH-8 solution. What would be likely to happen?
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98.  In a plant cell, where are the ATP synthase complexes located?
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99.  In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis translocates protons from
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100.  Where is the electron transport chain found in plant cells?
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