Practice question
Question
During photosynthesis, PS II absorbs energy at or below:
Explanation
Photosystem II reaction centre chlorophyll P680 has an absorption maximum at 680 nm and cannot effectively utilize longer wavelengths. P700 belongs to Photosystem I, absorbing up to 700 nm, while 670 nm represents antenna absorption and 780 nm is beyond photosynthetically active radiation.
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