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IB Biology HL C1.3.13 Hl Nadp Reduction Questions

Follow electron transfer from Photosystem I and the addition of H⁺ as NADP is reduced to NADPH in IB Biology HL C1.3.13.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify Photosystem I as the source of high-energy electrons used to reduce NADP in the light-dependent reactions.
  • Explain how NADP accepts electrons and H⁺ to form reduced NADP/NADPH.

IB Biology HL C1.3.13 Hl Nadp Reduction Questions question 1

[Maximum number: 1]

What occurs during photosynthesis?

A

Water is oxidized by releasing two electrons to NADPH.

B

Glycerate-3-phosphate (GP) is oxidized by releasing two electrons to photosystem II.

C

NAD is reduced by accepting two electrons from ATP.

D

NADP is reduced by accepting two electrons from photosystem I.

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