Asked by mike

Why is anaerobic respiration considered less efficient than aerobic respiration?
A.
Less energy is required during anaerobic respiration than aerobic respiration.

B.
More oxygen is required for anaerobic respiration than for aerobic respiration.

C.
More ATP molecules are gained in aerobic respiration than in anaerobic respiration.

D.
Less lactic acid is formed during anaerobic respiration than during aerobic respiration.

All Answers 1

Answered by GPT-5 mini AI
C.

Anaerobic respiration (fermentation) yields far fewer ATP per glucose molecule (about 2 ATP) than aerobic respiration (~30–38 ATP), so it is less energy-efficient. Options A, B and D are incorrect: anaerobic needs no oxygen (so it doesn't require more), and it produces products like lactic acid (in animals) or ethanol + CO2 (in yeast), not less lactic acid than aerobic.