The largest amount of ATP made by cellular respiration is created by the process of ______________, in the _____________ steps of aerobic cellular respiration.

• A. Substrate-level phosphorylation; first.
• B. Oxidative phosphorylation; first.
• C. Oxidative phosphorylation; final.
• D. Substrate-level phosphorylation; final.

Answer: (C)

Verified step by step guidance

1. Understand the process of cellular respiration, which consists of glycolysis, the citric acid cycle, and oxidative phosphorylation.
2. Recognize that ATP (adenosine triphosphate) is the energy currency of the cell, and its production is crucial for cellular activities.
3. Identify that oxidative phosphorylation is the stage where the majority of ATP is produced. This process occurs in the mitochondria and involves the electron transport chain and chemiosmosis.
4. Note that oxidative phosphorylation is the final step of aerobic cellular respiration, following glycolysis and the citric acid cycle.
5. Conclude that the largest amount of ATP is produced during oxidative phosphorylation, which is the final step of aerobic cellular respiration.