The Relationship Between Photosystem I (PSI)and Photosystem II (PSII)is Correctly

question 8

Multiple Choice

The relationship between photosystem I (PSI) and photosystem II (PSII) is correctly described by which of the following statements?

• A)PSI precedes PSII in photosynthesis.
• B)Electrons are excited by PSI or PSII,but not both.
• C)Chlorophyll molecules in the reaction centers of PSI and PSII are designated P700 and P680,respectively,to reflect the wavelengths of their light absorption maxima.
• D)PSII was discovered before PSI.
• E)Only PSI contains a special pair of chlorophyll a molecules.

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