1
How many ATP molecules are produced by aerobic oxidation of one molecule of glucose?
- 2
- 4
- 38
- 34
Answer
(3) 38
Solution
As per NCERT (respiratory balance sheet), there can be a net gain of 38 ATP molecules during aerobic respiration of one molecule of glucose:
Glycolysis: 2 ATP (net, substrate level); 2 NADH ⇒ 6 ATP
Link reaction: 2 NADH ⇒ 6 ATP
Krebs cycle: 2 GTP ⇒ 2 ATP; 6 NADH ⇒ 18 ATP; 2 FADH2 ⇒ 4 ATP
∴ Total = 2 + 6 + 6 + 2 + 18 + 4 = 38 ATP
Answer: (3)
AIPMT 2002