FORESTRY
PLANT PHYSIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the first process in photosynthesis?
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Photosystem I
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Photosystem II
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Calvin Cycle
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Dark Reactions
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Explanation:
Detailed explanation-1: -1: Photosystem I I: In the photosystem II (PSII) reaction center, energy from sunlight is used to extract electrons from water. The electrons travel through the chloroplast electron transport chain to photosystem I (PSI), which reduces NADP+ to NADPH .
Detailed explanation-2: -In photosystem II, enzymes absorb the photons of light to energise the electrons. The energised electrons then travel through a series of cofactors and coenzymes to reduce plastoquinone to plastoquinol. The energised electrons also replace the oxidising water to form molecular oxygen and hydrogen ions.
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