In the krebs cycle, a. pyruvate is broken down into Co2 molecules
b. glucose is broken down into NADH and CO2
c. Co2 is concerted in pyruvate and O2
d. NADH and CO2 are converted into ATP

a. pyruvate is broken down into Co2 molecules

Explanation:

Krebs cycle is also known as Citric Acid Cycle, in which pyruvate formed during the glycolytic is broken down into Carbon Dioxide (CO2) and Water (H2O).

Each pyruvate molecule is broken down into carbon atom which releases carbon dioxide.

Hence, the correct answer is "a. pyruvate is broken down into Co2 molecules".

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