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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