21. The Generation of Biochemical Energy

Which one of the following catabolism stages produces NADH?

The overall equation in this section,

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shows the cycle between photosynthesis and oxidation. Pathways operating in opposite directions cannot be exergonic in both directions.

a. Which of the two pathways in this cycle is exergonic and which is endergonic?

Each of these reactions is involved in one of the four stages of metabolism shown in Figure 21.4. Identify the stage in which each reaction occurs.

a. Hydrolysis of starch to produce glucose

Each of these reactions is involved in one of the four stages of metabolism shown in Figure 21.4. Identify the stage in which each reaction occurs.

b. Oxidation of NADH coupled with synthesis of ATP

Each of these reactions is involved in one of the four stages of metabolism shown in Figure 21.4. Identify the stage in which each reaction occurs.

c. Conversion of glucose to acetyl-CoA