Q. The earliest photo synthesizers used which of the following as the source of hydrogen?

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Q. Which of the following systems has an associated water splitting activity resembling that of plants?

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Q. The carbon-assimilation reactions require ATP and NADPH in the ratio

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Q. Photosynthesis takes place in sac like membranes called

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Q. Why light is required for light dependent reactions?

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Q. The pigment used in human vision is

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Q. Which of the following is the correct sequence for the movement of electrons during the light-dependent reactions of plants?

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Q. When compared to retinal, chlorophyll can be described as a pigment that has a

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Q. If 8 photons are required to produce one molecule of O₂, how many photons are required to produce one molecule of glucose?

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Q. Cyanobacteria does not use which of the following for both oxidative and photophosphorylation?

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Q. A water-soluble protein that carries one electron present in chloroplast is

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Q. A water-soluble protein that carries one electron present in mitochondria is

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Q. A mobile, lipid soluble carrier of two electrons present in mitochondria is

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Q. A mobile, lipid soluble carrier of two electrons present in chloroplasts is

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Q. Plastoquinol formed in PSII is oxidized by

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Q. Which of the following describes the complete route by which electrons flow H₂O to NADP⁺?

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Q. Photosystem II is a

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Q. A soluble Cu-containing electron transfer protein is

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Q. A chlorophyll-like accessory pigment lacking Mg⁺² is

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Q. The percentage of light energy fixed in photosynthesis is around

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