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Discussion

The pentose phosphate pathway is chiefly important to the cell because it supplies ________.

  • A.large amounts of ATP
  • B.NADPH and pentose sugars for biosynthesis
  • C.acetyl-CoA for the Krebs cycle
  • D.a terminal electron acceptor

Answer: B

Correct answer: NADPH and pentose sugars for biosynthesis

The pathway generates NADPH for reductive biosynthesis and ribose-5-phosphate for nucleotide and nucleic acid synthesis. Its role is anabolic rather than energetic, which is why its ATP yield is negligible.

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