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BIOL201 - Test 3

BIOL201 - Test 3 - Test 3 2(6pts Under what conditions...

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Test 3 2. (6pts) Under what conditions would each of the following biochemical processes would be expected to occur and what types of organisms would they occur in? A. Alcoholic Fermentation Low O2 conditions – in yeast B. Lactic Acid Fermentation Low O2 conditions – in animals C. Photorespiration Low CO2 conditions or hot and dry conditions – in plants 3. (6 pts) You have added a poison that inhibits the transfer of electrons to the electron transport chain of cellular respiration. What would happen to each of the following and WHY? A. The rate of ATP production ATP production would drop because without electron transport you would not establish a H+ gradient. A H+ gradient is needed to drive chemiosmosis. B. The rate of O2 consumption O2 consumption would drop because O2 is the terminal electron acceptor at the end of the electron transport chain. C. The rate of CO2 release The rate of CO2 release would also drop because without electron transport NDH is never oxidized to NAD+. NAD+ is a substrate for the Krebs Cycle. Without NAD+ the Krebs Cycle cannot function, so CO2 is not released.
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Test 3 Essays: 20 points each Answer one of the following two questions. 1. Compare and contrast the oxidative phosphorylation of cellular respiration and the light- dependent reactions of photosynthesis. This means to explain the similarities and differences in the two processes and their related structures.
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