Cellular Respiration

AP Biology· difficulty 3/5

What happens to the carbon atoms during glycolysis?

A
$Three carbons are converted to O2$
B
$All 6 carbons remain - 6C glucose splits into 2 three-carbon pyruvates with no CO2 released$
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C
$Six carbons form one oxaloacetate$
D
$Two carbons are released as CO2$

Explanation

Glycolysis splits glucose into two pyruvates. No CO2 is released. CO2 production begins at pyruvate oxidation (one CO2 per pyruvate) and continues in the Krebs cycle.

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