Examine the Illustration Below

question 58

Multiple Choice

Examine the illustration below.Which statement best summarizes the contribution of photosystem I (PS I) during photosynthesis?

• A) PS I provides the initial energy boost to the electrons on their way to photosystem II (PS I
• I).
• B) PS I energizes electrons that initially accumulate within the thylakoid space and eventually drive ATP synthesis.
• C) PS I energizes electrons that are transported by NADPH to the Calvin cycle and will eventually reduce the carbon in CO₂.
• D) PS I regulates the transmembrane passage of protons through the thylakoid membrane.