PHOTOSYNTHESIS
LIGHT DEPENDENT REACTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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in the stroma
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in the Calvin cycle
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in the thylakoid membrane
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in the thylakoid space
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Detailed explanation-1: -The distribution of the two photosystems, PSI and PSII, in grana and stroma lamellae of the chloroplast membranes is not uniform. PSII are mainly concentrated in grana and PSI in stroma thylakoids.
Detailed explanation-2: -Plants have a chloroplast with thylakoid membranes-which consists of photosystems I (PSI) and II (PSII)-that are connected by the cytochrome b6f complex.
Detailed explanation-3: -Two types of photosystems, photosystem I (PSI) and photosystem II (PSII), are found in the thylakoid membrane inside the chloroplast. Each photosystem consists of multiple antenna proteins that contain a mixture of 300–400 chlorophyll a and b molecules, as well as other pigments like carotenoids.
Detailed explanation-4: -PS II is involved only in non-cyclic photophosphorylation. PS II is present in the inner part of grana thylakoids. PS I is located in the outer part of grana thylakoids as well as stroma thylakoids.
Detailed explanation-5: -Photosystems are found in the thylakoid membranes of plants, algae, and cyanobacteria. These membranes are located inside the chloroplasts of plants and algae, and in the cytoplasmic membrane of photosynthetic bacteria. There are two kinds of photosystems: PSI and PSII.