A-What substance is produced at the end of the oxidation of pyruvate and feeds i

Question

A-What substance is produced at the end of the oxidation of pyruvate and feeds into the next step of cellular respiration?
1. NADH
2. FAD
3. acetyl-CoA
4. glucose
5. carbon dioxide

B-Where do electrons harvested during energy transactions in the Krebs cycle go?
1. they are recycled back into oxaloacetate, the beginning and ending molecule of the Krebs cycle
2. into the cytoplasm where they act as free radicals
3. they participate in substrate-level phosphorylation, directly making ATP from the Krebs cycle
4. they reduce NAD+ and later go on to oxidize members of the electron transport chain
5. they are donated directly to O2 along with hydrogen, making water

C-During digestion, molecules are broken down largely through:
1. incorporation
2. dephosphorylation
3. reduction
4. synthesis
5. oxidation

Explanation / Answer

A 3. Acetyl-Coa B 4. They reduce NAD+ and later go on to oxidize members of the electron transport chain C 5. Oxidation

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