PS I has chlorophyll a molecule which absorbs maximum light of _ nm?
Correct answer: D. 700 nm
- A. 600 nm
- B. 650 nm
- C. 680 nm
- D. 700 nm
Explanation
PSI (Photosystem I) is a complex of chlorophyll a pigment molecules that absorbs light at a wavelength of 700 nm, which is the far-red end of the visible spectrum. This light energy is then used to drive the electron transfer chain in the light-dependent reactions of photosynthesis, ultimately leading to the production of ATP and NADPH.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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