- A NAD+ functions mainly within the nucleus during DNA repair reactions overall
- B NADP+ is mainly used in anabolic reactions while NAD+ is in catabolic reactions
- C NAD+ carries two additional electrons per molecule compared to NADP+
- D NADP+ is confined largely to the mitochondrial matrix compartment
Correct answer: B. NADP+ is mainly used in anabolic reactions while NAD+ is in catabolic reactions
Explanation: NAD+ accepts electrons in catabolic reactions (glycolysis, Krebs cycle). NADPH (reduced NADP+) is mainly used in anabolic reactions like fatty acid synthesis and in the pentose phosphate pathway.
Concept context
Carbohydrates, proteins, lipids, nucleic acids, and enzyme kinetics. Essential foundation for understanding metabolism.