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Question

If two moles of glucose are oxidized in the body through respiration, the number of moles of ATP produced are.

A
19
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B
38
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C
57
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D
76
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Solution

The correct option is A 76
Cellular respiration can be an anaerobic or aerobic respiration, depending on whether or not oxygen is present. Anaerobic respiration makes a total of 2 ATP. Aerobic respiration is much more efficient and can produce up to 38 ATP with a single molecule of glucose.
Anaerobic respiration consists of two steps.
1. Glycolysis (2 ATP)
2. Fermentation
Total = 2 ATP
Aerobic respiration consists of three steps.
1. Glycolysis (2 ATP)
2. Krebs Cycle (2 ATP)
3. Electron Transport Chain (34 ATP)
Total = 38 ATP
If two moles of glucose is oxidized in the body through respiration, the number of moles of ATP produced are 38 x 2 = 76.
So the answer is option D '76'.

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