bio 11 - Biology 201. Homework on Chapter 9 1. Describe...

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Biology 201. Homework on Chapter 9 1. Describe what happens to pyruvate if sufficient oxygen is present. If enough oxygen is present, pyruvate continues to be catabolized and goes to the Krebs cycle, where it will produce NADH and FADH2 in order to produce ATP in the electron transport chain. 2. in step 6 of the citric acid cycle, succinate is converted to fumarate. The reaction is coupled to the conversion of FAD to FADH2. Would succinate or fumarate have more carbon-hydrogen bonds? Is succinate being oxidized or reduced? Why is FAD being used here instead of NAD? Succinate has more energy than fumarate, and this is because succinate has more carbon-hydrogen bonds. Succinate is being oxidized into fumarate. There is not enough energy to reduce an NAD, so an FAD is made instead. 3. Aliens land at UNM. You find that in almost all ways, their metabolism is identical to that of humans. One important difference is that they do not use NAD/ NADH. At every step in the oxidation of biological molecules where humans use
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This note was uploaded on 04/02/2008 for the course BIO 201 taught by Professor Hofkin during the Spring '06 term at New Mexico.

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bio 11 - Biology 201. Homework on Chapter 9 1. Describe...

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