TREE PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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harvesting light energy to make ATP
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receiving electrons from the thylakoid membrane ETC
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generation of molecular oxygen
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extraction of hydrogen electrons from the splitting of water
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Detailed explanation-1: -Photosystem I is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin. Ultimately, the electrons that are transferred by Photosystem I are used to produce the moderate-energy hydrogen carrier NADPH.
Detailed explanation-2: -Photosystem I receives electrons from plastocyanin or cytochrome c6 on the lumenal side of the thylakoid membrane and uses light energy to transfer them across the membrane to ferredoxin on the stromal side. It can also function in a cyclic electron transport pathway.
Detailed explanation-3: -This is accomplished by the use of two different photosystems in the light reactions of photosynthesis, one to generate ATP and the other to generate NADPH. Electrons are transferred sequentially between the two photosystems, with photosystem I acting to generate NADPH and photosystem II acting to generate ATP.
Detailed explanation-4: -Each thylakoid membrane contains many chlorophyll molecules and other proteins. Chlorophyll molecules are arranged into clusters called photosystems. Plants capture light energy with chlorophyll pigments and transfer it to electrons, which are then passed down the chain of proteins in the thylakoid membrane.