What Happens First to the Carbon Atoms That Enter the Krebs

question 23

Multiple Choice

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

• A)They are reduced to form carbon dioxide.
• B)They combine with a 4-carbon sugar to form a 6-carbon sugar citrate.
• C)Two acetyl CoA molecules join together to form a 6-carbon sugar glucose.
• D)They combine with pyruvate to form a 4-carbon sugar malate.
• E)They are activated with a phosphate from ATP.