Cellular respiration harvests the most chemical energy from which of the following?
a. generating carbon dioxide and oxygen in the electron transport chain
b. converting oxygen to atp
c. substrate-level phosphorylation
d. transferring electrons from organic molecules to pyruvate
e. chemiosmotic phosphorylation

Cellular respiration harvests the most chemical energy from B. converting oxygen to ATP.

Cellular energy simply means the metabolic pathway that helps in breaking down glucose which then leads to the production of ATP.

It should be noted that the stages of cellular respiration include citric acid, glycolysis, oxidative phosphorylation, and pyruvate oxidation.

The chemical energy that's mostly harvested during cellular respiration is gotten from the conversion of oxygen to ATP.

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The answer is B

Explanation:

Cellular respiration harvest most chemical energy from converting oxygen to ATP. During cellular respiration, most ATP produced are generated by oxidative phosphorylation , which uses the energy released by redox reactions in the electron transport chain to male ATP. The electrons are finally passed to oxygen which is reduced to water.

correct answer is a. and d.