Question

Both aerobic and anaerobic respiration yields a net gain of ATP molecules to be used as energy for living things. The process of ___ would yield the highest number of ATP.

A. Citric acid cycle (Krebs cycle)
B. electron transport chain
C. fermentation
D. glycolysis

Answer 1

In aerobic respiration, the process that yields the highest number of ATP is the electron transport chain.

Step-by-step explanation:

In aerobic respiration, the process that yields the highest number of ATP is the electron transport chain (option B).

During the electron transport chain, the high-energy electrons carried by NADH and FADH₂ from previous steps of aerobic respiration are used to create a proton gradient across the inner mitochondrial membrane.

This proton gradient is then used to generate ATP through the process of oxidative phosphorylation, resulting in a much larger net gain of ATP compared to the other options.