Photosystem II has molecules which absorbs maximum light of___________?
Correct answer: A. 680 nm
- A. 680 nm
- B. 100 m
- C. 700 nm
- D. 670 nm
Explanation
Photosystem II has a reaction-centre chlorophyll called P680 because it absorbs maximally at about 680 nm. The likely alternative is 700 nm, which identifies the reaction centre of Photosystem I, not Photosystem II.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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