A) it is 700 times more efficient than other pigment molecules
B) its absorption and action spectra show peaks at 700nm
C) it is rendered ineffective at wave length above 700nm
D) it is a unit consisting of 700 chorophyll molecules.
Correct Answer: B
Solution :
: The reaction centre of photosystem I is referred to as P700, where P5 stands for pigment and 700 standing for the wavelength of light that this particular chlorophyll molecule absorbs most strongly (i.e. 700 nm).
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