Title: How Cells Harvest Chemical Energy (Multiple Choice) Post by: Nova14689 on Mar 9, 2012 Chapters 6. How Cells Harvest Chemical Energy 7. Photosynthesis: Using Light to Make Food
Question 1 Oxidation is the __________, and reduction is the __________. Answer gain of protons . . . loss of protons gain of oxygen . . . loss of oxygen gain of electrons . . . loss of electrons loss of electrons . . . gain of electrons loss of oxygen . . . gain of oxygen Question 2 The principal end product of photosynthesis is Answer glucose PGAL ATP light Question 3 The term anaerobic means Answer without ATP. without bacteria. with O2. without CO2 without O2 Question 4 Which one of the following is the correct sequence of stages in cellular respiration? Answer oxidative phosphorylation, glycolysis, and the citric acid cycle glycolysis, oxidative phosphorylation, and the citric acid cycle oxidative phosphorylation, the citric acid cycle, and glycolysis the citric acid cycle, oxidative phosphorylation, and glycolysis glycolysis, the citric acid cycle, and oxidative phosphorylation Question 5 CO2 enters and O2 escapes from a leaf via Answer stroma. central vacuoles. stomata. thylakoids. grana. Question 6 Where is chlorophyll found in a plant cell? Answer matrix cristae thylakoid membranes stroma cytoplasm Question 7 If you want to monitor athletes to determine at what point their muscles were functionally anaerobically, you will check the build-up of Answer ATP lactic acids carbon dioxide ADP Question 8 Which of the following processes produces the most ATP per molecule of glucose oxidized? Answer alcoholic fermentation lactic acid fermentation anaerobic respiration aerobic respiration All produce approximately the same amount of ATP per molecule of glucose. Question 9 Anything that prevents ATP formation will most likely Answer force the cell to rely on ADP for energy. force the cell to rely on lipids for energy. result in the conversion of kinetic energy to potential energy. result in cell death. have no effect on the cell. Question 10 NADPH + H+ generated in the light dependent reaction of photosynthesis, is used in the light independent phase to Answer reduce CO2 to glucose. phosphorylate CO2. split water and generate oxygen. None of the above is correct. Question 11 During photosynthesis, the first task of chlorophyll is to Answer impart a green color to leaves provide the plant with ATP energy absorb water and CO2 from the environment trap sunlight energy none of the above Question 12 Which of the following requires chemical energy? Answer active transport synthesis of macromolecules transmission of neural impulse movement of muscles All of the above require chemical energy. Question 13 Producers Answer sustain themselves without eating. make organic food molecules from simple raw materials. are autotrophs. manufacture the biosphere's food supply. All of the choices are correct. Question 14 At most how many molecules of ATP can be produced per glucose molecule of glucose in cellular respiration Answer 2 8 24 32 Question 15 The ultimate source of all the food we eat and the oxygen we breathe is Answer cellular respiration. anaerobic metabolism. glycolysis. chemiosmosis. photosynthesis. Question 16 Which of the following is true of both photosynthesis and cellular respiration? Answer They are both oxidation-reduction reactions. They are both energy releasing reactions. They are both energy storing reactions. They both require light energy. Question 17 In biology a "limiting factor" is a condition or substance that, by its absence or short supply, limits the rate at which a biological process can proceed. Which of the following could be a limiting factor in photosynthesis? Answer glucose oxygen water all of the above Question 18 Some friends are trying to make wine in their basement. They've added yeast to a sweet grape juice mixture and have allowed the yeast to grow. After several days they find that sugar levels in the grape juice have dropped, but there's no alcohol in the mixture. The most likely explanation is that: Answer the mixture needs more oxygen. Yeast need oxygen to break down sugar and get enough energy to produce alcohol. the mixture needs less oxygen. Yeast only produce alcohol in the absence of oxygen. the mixture needs less sugar. High sugar concentrations stimulate cellular respiration, and alcohol is not a by-product of cellular respiration. the mixture needs more sugar. Yeast need a lot of energy before they can begin to produce alcohol. None of the choices are correct. Question 19 Rotenone is a poison commonly added to insecticides. This molecule binds to the first electron carrier molecule in the electron transport system. Which of the following statements best describes the effect that it has on an insect? Answer the insect will die because anaerobic respiration can't occur. The insect will die because high levels of fermentation products will build up. The insect will die because of inadequate ATP production. The insect will die because H2O will not be produced and dehydration will occur. Question 20 Which of the following organisms can make organic molecules from water and carbon dioxide? Answer crayfish yeast wheat bear All of the choices can make organic molecules from water and carbon dioxide. Question 21 In the reaction, NADH + H+ + FAD -----> NAD+ + FADH2, which reactant is reduced as the reaction proceeds to the right? Answer NADH FAD NAD+ FADH2 Question 22 Which of the following is a true statement concerning the role of oxidation-reduction reactions in photosynthesis and cellular respiration? Answer Photosynthesis involves only reduction reactions; respiration, only oxidation reactions. Photosynthesis involves only oxidation reactions; respiration, only reduction reactions. In photosynthesis, carbon dioxide is oxidized to form sugar; in respiration, sugar is reduced to form carbon dioxide. In photosynthesis, carbon dioxide is reduced to form sugar; in respiration, sugar is oxidized to form carbon dioxide. Question 23 Which one of the following statements is false? Cellular respiration Answer produces water. produces carbon dioxide. releases heat. is a single chemical reaction with just one step. consumes glucose. Question 24 Which of the following metabolic pathways is common to both aerobic and anaerobic processes of sugar breakdown? Answer glycolysis Krebs cycle electron transport chain conversion of pyruvic acid to lactic acid Question 25 In an oxidation-reduction reaction, the reactant that gets oxidized Answer gains an electron(s) gains hydrogen gains energy None of the above is correct. . 2 points Question 26 Which of the following is analogous to the movement of electrons through an electron transport chain? Answer a ball rolling down a flight of stairs one step at a time a ball being thrown from the top of the stairs to the bottom of the stairs a ball being thrown from the bottom of the stairs to the top of the stairs a ball being thrown back and forth from the bottom of the stairs to the top and from the top to the bottom Question 27 The summary equation for photosynthesis is Answer the same as the equation for glycolysis written in reverse. 6 CO2 + 6 H2O + sunlight --> C6H12O6 + 6 O2. C5H12O6 + 6 O2 + sunlight --> 5 CO2 + 6 H2O. C6H12O6 + 6 O2 + sunlight --> 6 CO2 + 6 H2O. None of the choices are correct. Question 28 Which of the following are products of cellular respiration? Answer oxgyen and carbon dioxide glucose and carbon dioxide energy to make ATP and carbon dioxide oxygen and energy to make ATP oxygen and glucose Question 29 A cell in an environment that did not contain oxygen but did contain food. In such situation, a cell could not Answer extract energy from food perform glycolysis utilize the Krebs cycle and Electron Transport Chain utilize the Electron Transport Chain but coud utilize Krebs cycle Question 30 Which of the following statements is true during photosynthesis? Answer CO2 gets reduced to glucose. Glucose gets reduced to CO2. Glucose gets oxidized to CO2. CO2 gets oxidized to glucose. Question 31 Which of the following serves as the final hydrogen (and electron) acceptor in aerobic respiration? Answer O2 CO2 cytochromes NAD+ Question 32 The widespread planting of trees on barren soil would Answer decrease the CO2 in the atmosphere and thus decrease the global warming trend. increase the CO2 in the atmosphere and thus increase the global warming trend. decrease the CO2 in the atmosphere and thus increase the global warming trend. increase the CO2 in the atmosphere and thus decrease the global warming trend. Question 33 In most green plants, chloroplasts are Answer concentrated in a portion of the leaf called the stroma. found throughout the leaf tissue. concentrated in the stomata. concentrated in a zone of leaf tissue called the mesophyll. None of the choices are correct. Question 34 Which one of the following metabolic pathways is found in both aerobic and anaerobic organisms? Answer oxidative phosphorylation chemiosmosis glycolysis the citric acid cycle None of the choices are correct Question 35 Which one of the following molecules is both a reactant and a product of photosynthesis? Answer H2O CO2 O2 chlorophyll glucose Question 36 The overall equation for the cellular respiration of glucose is Answer 5 CO2 + 6 H2O -->C5H12 O6+ 6 O2+ energy. C6H12 O6 + 6 O2 --> 6 CO2 + 6 H2O + energy. C5H12O6 + 6 O2 --> 5 CO2 + 6 H2O + energy. C6H12O12 + 3O2 --> 6 CO2 + 6 H2O + energy. None of the choices are correct. Question 37 If you consume one gram of each of the following, which will provide the most ATP energy? Answer fat glucose sucrose protein starch Question 38 Clusters of light-gathering antenna pigments in a photosystem Answer pass energy to the reaction center. do not absorb photons. absorb electrons. are found in the roots of plants. break down H2O. Question 39 If you expose a photosynthesizing plant to carbon dioxide containing radioactive oxygen, which of the products of photosynthesis will be radioactive? Answer glucose O2 H2O all of the above Question 40 Photosynthesis is used to store energy in the form of Answer carbon dioxide water glucose ATP Title: How Cells Harvest Chemical Energy (Multiple Choice) Post by: happyface on Mar 10, 2012 Here's what i think are the answers to the first 20! sorry i didnt answer all of them! theres way too many questions
1. gain of electrons . . . loss of electrons 2. glucose 3. w/o oxygen 4. glycolysis, oxidative phosphorylation, and the citric acid cycle 5. stomata 6.thylakoid membrane 7. lactic acid 8. aerobic respiration 9. cell death 10. reduce CO2 to glucose 11. trap sunlight energy ? 12. All of the above require chemical energy 13. FAD ? 14. 32 15. photosynthesis 16. They are both oxidation-reduction reactions ? 17. water 18. the mixture needs less oxygen. Yeast only produce alcohol in the absence of oxygen. 19.The insect will die because of inadequate ATP production 20. wheat Title: How Cells Harvest Chemical Energy (Multiple Choice) Post by: Nova14689 on Mar 10, 2012 Thanks very much for your help. If you get the chance check on 21,29, 30, 31,and 32 for me. Needs help on this!
|