Question:
How many ATP molecules are generated from one molecule of glucose through aerobic respiration?
How many ATP molecules are generated from one molecule of glucose through aerobic respiration?
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Aerobic respiration yield: 36 ATP (eukaryotes).
Glycolysis: 2 ATP + 2 NADH.
TCA cycle: 6 NADH + 2 FADH2 + 2 GTP.
Glycolysis: 2 ATP + 2 NADH.
TCA cycle: 6 NADH + 2 FADH2 + 2 GTP.
Updated On: Sep 1, 2026
- 2 ATP
- 8 ATP
- 30 ATP
- 36 ATP
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of ATP yield in aerobic respiration.
Step 2: Detailed Explanation:
The net ATP yield from one molecule of glucose through aerobic respiration is typically 36 ATP (D).
This includes:
- Glycolysis: 2 ATP (net) + 2 NADH (6 ATP).
- Pyruvate oxidation: 2 NADH (6 ATP).
- TCA cycle: 6 NADH (18 ATP) + 2 FADH2 (4 ATP) + 2 GTP (2 ATP).
Total = 2 + 6 + 6 + 18 + 4 + 2 = 38 ATP.
However, in some cells (e.g., muscle), the NADH from glycolysis yields 2 ATP each (instead of 3), giving 36 ATP.
Thus, 36 ATP is the net yield.
Step 3: Final Answer:
Thus, 36 ATP molecules are generated, which corresponds to option (D).
[0.5cm]
This question tests knowledge of ATP yield in aerobic respiration.
Step 2: Detailed Explanation:
The net ATP yield from one molecule of glucose through aerobic respiration is typically 36 ATP (D).
This includes:
- Glycolysis: 2 ATP (net) + 2 NADH (6 ATP).
- Pyruvate oxidation: 2 NADH (6 ATP).
- TCA cycle: 6 NADH (18 ATP) + 2 FADH2 (4 ATP) + 2 GTP (2 ATP).
Total = 2 + 6 + 6 + 18 + 4 + 2 = 38 ATP.
However, in some cells (e.g., muscle), the NADH from glycolysis yields 2 ATP each (instead of 3), giving 36 ATP.
Thus, 36 ATP is the net yield.
Step 3: Final Answer:
Thus, 36 ATP molecules are generated, which corresponds to option (D).
[0.5cm]
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