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Asked by Elvira Mendoza on Jul 08, 2024

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Which of the following will recycle electrons back to photosystem I?

A) noncyclic electron pathway
B) cyclic electron pathway
C) CO2 fixation stage of Calvin cycle reactions
D) citric acid cycle
E) CO2 reduction phase of Calvin cycle reactions

Cyclic Electron Pathway

is a photosynthetic process in light reactions where electrons are recycled allowing ATP production without the buildup of NADPH or oxygen release.

Photosystem I

A component of the photosynthesis process in plants and cyanobacteria that captures light energy for ATP and NADPH production.

Noncyclic Electron Pathway

A process in photosynthesis where electrons flow in a linear manner from water to NADP+ producing NADPH, oxygen, and ATP.

  • Explain the route of electron movement in photosynthesis and its function in the conversion of energy.
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Angela ZubradtJul 10, 2024
Final Answer :
B
Explanation :
The cyclic electron pathway is the only option that recycles electrons back to photosystem I. In this pathway, photosystem I is used to generate ATP, but instead of passing electrons to NADP+ to be used in the reduction phase of the Calvin cycle, the electrons cycle back to photosystem I. This allows for additional ATP production without the need for additional electrons from water.

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