front 1 How is ATP generated in the reaction shown in Figure 5.4? | back 1 substrate-level phosphorylation |
front 2 Assume you are working for a chemical company and are responsible for growing a yeast culture that produces ethanol. The yeasts are growing well on the maltose medium but are not producing alcohol. What is the most likely explanation? | back 2 O2 is in the medium. |
front 3 In green and purple bacteria, electrons to reduce CO2 can come from | back 3 H2S. |
front 4 The use of enzymes is necessary to increase the activation energy requirements of a chemical reaction. | back 4 False |
front 5 Which biochemical process is NOT used during glycolysis? | back 5 beta oxidation |
front 6 Which of the following statements regarding the glycolysis pathway is FALSE? | back 6 One molecule of ATP is expended. |
front 7 What is the fate of pyruvic acid in an organism that uses aerobic respiration? | back 7 It is converted into acetyl CoA. |
front 8 An enzyme, citrate synthase, in the Krebs cycle is inhibited by ATP. This is an example of all of the following EXCEPT | back 8 competitive inhibition. |
front 9 Which of the following statements are TRUE? | back 9 2, 4, 5 |
front 10 Microorganisms that catabolize sugars into ethanol and hydrogen gas would most likely be categorized as | back 10 heterolactic fermenters |
front 11 The pentose phosphate pathway can be characterized as an anabolic pathway. | back 11 False |
front 12 From the list below, which is NOT produced during the Krebs cycle? | back 12 NADPH |
front 13 A bacterial culture grown in a glucose-peptide medium causes the pH to increase. The bacteria are most likely | back 13 Using the peptides |
front 14 Assume you are growing bacteria on a lipid medium that started at pH 7. The action of bacterial lipases should cause the pH of the medium to | back 14 decrease (become more acidic). |
front 15 Which of the following uses glucose for carbon and energy? | back 15 chemoheterotroph |
front 16 Gallionella bacteria can get energy from the reaction Fe2+ → Fe3+. This reaction is an example of | back 16 oxidation |
front 17 In Figure 5.8, the structure labeled "1" is | back 17 a plasma membrane |
front 18 Carbon fixation occurs during the light-independent phase of photosynthesis. | back 18 True |
front 19 Which statements correspond to amphibolic pathways? 2.They are shared metabolic pathways. 3.Feedback inhibition can help regulate rates of reactions. 4.Both types of reactions are necessary but do not occur simultaneously. | back 19 1,2,3 |
front 20 How would a noncompetitive inhibitor interfere with a reaction involving the enzyme shown in Figure 5.3? | back 20 It would bind to b. |
front 21 Glycolysis is utilized by cells in both respiration and fermentation. | back 21 True |
front 22 Which of the following compounds is NOT an enzyme? | back 22 coenzyme A |
front 23 Which of the following has bacteriochlorophylls and uses alcohols for carbon? | back 23 photoheterotroph |
front 24 Which of the following uses CO2 for carbon and H2 for energy? | back 24 chemoautotroph |
front 25 In Figure 5.8, the path labeled "2" is the flow of | back 25 protons |
front 26 Researchers are developing a ribozyme that cleaves the HIV genome. This pharmaceutical agent could be described as | back 26 an RNA molecule capable of catalysis. |
front 27 Which organism is NOT correctly matched to its energy source? | back 27 photoautotroph - CO2 chemoautotroph - NH3 |
front 28 In general, ATP is generated in catabolic pathways and expended in anabolic pathways. | back 28 True |
front 29 Refer to Figure 5.8. In aerobic respiration, where is water formed? | back 29 d |
front 30 If a cell is starved for ATP, which of the following pathways would most likely be shut down? | back 30 pentose phosphate pathway |
front 31 Which of the following is the best definition of fermentation? | back 31 the partial oxidation of glucose with organic molecules serving as electron acceptors |
front 32 In non-cyclic photophosphorylation, excited electrons ultimately | back 32 combine with hydrogen ions and NADP+ to produce NADPH. |
front 33 Which of the graphs in Figure 5.5 best illustrates the activity of an enzyme that is saturated with substrate? | back 33 c |
front 34 A bacterium such as Pseudomonas uses nitrate as a final electron acceptor in an electron transport system. All the below statements are true EXCEPT | back 34 they require light. |
front 35 Both respiration and photosynthesis require the use of an electron transport chain. | back 35 True |