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Pavel [41]
4 years ago
9

Two nutrient solutions are maintained at the same pH. Actively respiring mitochondria are isolated and placed into each of the t

wo solutions. Oxygen gas is bubbled into one solution. The other solution is depleted of available oxygen. Which of the following best explains why ATP production is greater in the tube with oxygen than in the tube without oxygen?
A. The rate of proton pumping across the inner mitochondrial membrane is lower in the sample without oxygen. B. Electron transport is reduced in the absence of a plasma membrane. C. In the absence of oxygen, oxidative phosphorylation produces more ATP than does fermentation. D. In the presence of oxygen, glycolysis produces more ATP than in the absence of oxygen.

Was told the answer is A. but i need help justifying that and why it is not D
Biology
1 answer:
Daniel [21]4 years ago
5 0

Answer:

Explanation:

A is correct because energy from electrons from oxygen are used to pump the H+ (as well as electrons from NADH) It's not D because glycolysis happens both in absence and presence of oxygen and never uses O2 so glycolysis is the same in both processes, its what happens after glycolysis that is dependent on the availability of oxygen (oxidative phosphorylation or fermentation)

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