Question

Assertion : During aerobic respiration, pyruvic acid formed as a result of glycolysis, undergoes phosphorylation reaction to form acetyl $CoA$.
Reason : There is net gain of $18\, ATP$ molecules during aerobic respiration of one molecule of glucose.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (D)

During aerobic respiration, the final product of glycolysis, i.e., pyruvic acid is transported from the cytoplasm into mitochondria and undergoes oxidative decarboxylation reaction to form acetyl $CoA$. Aerobic respiration is the complete oxidation of glucose into $CO_2$ and $H_2O$. There can be a net gain of $36\, ATP$ molecules in aerobic respiration of one molecule of glucose.