Question

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

• A. 19
• B. 38
• C. 57
• D. 76

Answer 1

Answer: (D)

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'.