Question

The net gain of energy from one gram mole of glucose during aerobic respiration is

• A. 2 ATP
• B. 4 ATP
• C. 38 ATP
• D. 40 ATP.

Answer 1

The correct option is C 38 ATP

If a cell is undergoing aerobic respiration then it will first undergo glycolysis which is the first breakdown of glucose in the cell and then Krebs cycle.

The net gain of ATP in glycolysis is 8 and the net gain of ATP in Krebs cycle including the substrate phosphorylation and oxidative phosphorylation is 30. So, the total gain of ATP is 38 from one molecule of glucose.

So, the correct option is '38 ATP'