front 1 Which of the following is true of catabolism? | back 1 Catabolic reactions are exergonic; they break down complex organic molecules into simpler ones. |
front 2 Which of the following statements is true about enzymes? | back 2 Each enzyme has a characteristic three-dimensional shape. |
front 3 The chemical reactions involved in synthesizing proteins & cell wall peptidoglycan are examples of ______ reactions. | back 3 anabolic |
front 4 Which of the following statements is accurate concerning glucose metabolism? | back 4 Pyruvic acid, the product of glycolysis, is the starting block for both Krebs cycle and fermentation. |
front 5 The complete oxidation (catabolism) of glucose typically involves three stages. The greatest amount of ATP is produced in which stage? | back 5 The electron transport chain. |
front 6 Which of the following molecules carry electrons during various stages of glucose catabolism? | back 6 NADH & FADH2 |
front 7 Which of the following four stages of glucose oxidation requires molecular oxygen? | back 7 Oxidative phosphorylation. |
front 8 Which of the following statements accurately describes the difference between aerobic & anaerobic respiration? | back 8 Aerobic respiration uses oxygen as the final electron acceptor & anaerobic respiration uses either an inorganic molecule, such as nitrate ions or sulfate ions, or an organic molecule, such as an acid or alcohol. |
front 9 Carbon fixation occurs during ______________. | back 9 photosynthesis |
front 10 Fermentation differs from anaerobic respiration in all of the following ways EXCEPT that fermentation does NOT _________. | back 10 use an electron transport chain |
front 11 When fermentation test are used to help identify bacteria, which of the following end-products is typically detected by a color or change? | back 11 Acid |
front 12 Which of the following are products of light-dependaent(in italics) photosynthetic reactions & are necessary for the light-independent(in italics) photosynthetic reactions occur? | back 12 ATP & NADPH |
front 13 During the light-independent reactions of photosynthesis, organisms _____. | back 13 synthesize sugars |
front 14 Nitrobacter(italics) bacteria use carbon dioxide for their carbon source & nitrate ions as an energy source. This organism is a _____. | back 14 chemoautotroph |
front 15 Which group of organisms has members representing each of the following nutritional classifications: chemoheterotrophs, chemoautogrophs, photoheterotrophs, & photoautotrophs? | back 15 Bacteria |
front 16 Which of the following molecules traps energy released during oxidation reduction reactions? | back 16 ATP |
front 17 Some amino acids are synthesized by adding an amine group to pyruvic acid or to one of the Krebs cycle intermediates. This process is known as ______. | back 17 Amination |
front 18 You inoculate a bacterial culture into a tube containing glucose & peptides. The pH indicator shows that the pH decreased after 24 hours & then increased at 48 hours. What has caused the increase in pH? | back 18 Deamination |
front 19 Which of the following terms refers to pathways that can function both in anabolism & catabolism? | back 19 Amphibolic pathways |
front 20 Like glucose, amono acids are catabolized for energy, but these must be converted to a form where they can enter the Krebs cycle for oxidation. All of the following reactions occur in the catabolism of amino acids EXCEPT __________. | back 20 carbon fixation |