1. what would be the net gain of atp from the breakdown of ten molecules of glucose under aerobic conditions?
10
20
40
360
2. the krebs cycle does not occur if
oxygen is present.
oxygen is not present.
glycolysis occurs.
carbon dioxide is present.
3. in the krebs cycle, the carbon atoms in a three-carbon molecule are released in
one molecule of water.
three molecules of oxygen.
three molecules of carbon dioxide.
one molecule of glucose.

1. Option D, 360

2. Option A, oxygen is present

3. Option C, three molecules of carbon dioxide.

Explanation:

1. Option D, 360

When one molecule of glucose break down in the process of photosynthesis , then thirty six molecules of ATP are produced. Thus, in break down of ten molecules of glucose , 360 molecules of ATP will be produced.

2. Option A, oxygen is present

In the Kerb cycle , if oxygen is present then the pyruvic acid (produced in the photosynthesis process) enters the mitochondria. As it enters the mitochondria, it will convert into acetyl coenzyme A (CoA) (which is a two carbon molecule) by loosing carbon dioxide molecule

3. 

Option C, three molecules of carbon dioxide.

In kerb cycle , for each pyruvate molecule , one carbon dioxide molecule is released.

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