Question

which of the following best explains why aerobic respiration is more energy efficient than anaerobic respiration?
a. aerobic respiration produces less carbon dioxide per molecule of glucose.
b. aerobic respiration produces more atp per molecule of glucose.
c. aerobic respiration occurs in one step, while anaerobic respiration requires several steps.
d. aerobic respiration fully breaks down glucose, while anaerobic respiration does not.

Explanation:

Aerobic respiration uses oxygen to fully break - down glucose through glycolysis, the Krebs cycle, and the electron - transport chain, producing up to 38 ATP per glucose molecule. Anaerobic respiration occurs without oxygen and only partially breaks down glucose, producing much less ATP (e.g., 2 ATP in fermentation). The key factor in energy efficiency is the amount of ATP produced.

Answer:

B. Aerobic respiration produces more ATP per molecule of glucose.