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What First Happens to the Carbon Atoms That Enter the Krebs

Question 60

Multiple Choice

What first happens to the carbon atoms that enter the Krebs cycle as acetyl CoA?


A) They are reduced to form carbon dioxide.
B) They are activated with a phosphate from ATP.
C) They combine with pyruvate to form a four-carbon sugar.
D) Two acetyl CoA molecules join together to form a six-carbon sugar.
E) They combine with a four-carbon sugar to form a six-carbon sugar.

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