Question

what molecule enters the citric acid cycle?
glucose
pyruvate
acetyl - coa
nadh

Explanation:

Pyruvate is first converted to acetyl - CoA. Glucose is broken down to pyruvate in glycolysis. NADH is a product of the citric acid cycle. Acetyl - CoA combines with oxaloacetate to start the citric acid cycle.

Answer:

C. Acetyl - CoA