The thylakoid of chloroplast is responsible for which of the following functions?

NADP+ is reduced to create NADPH.

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Hydrogen ions are pumped against their concentration gradient.

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ADP is produced by the ATP synthase enzyme.

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Excited electrons transfer energy to an electron transport chain.

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Both A and B.

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Solution

The correct option is E Both A and B.
The thylakoid membranes, of a chloroplast are site of light reactions of photosynthesis. They are arranged into stacked and unstacked regions called grana and stroma thylakoids, respectively, that are differentially enriched in photosystem I and II complexes.
Chloroplast thylakoid is responsible for following functions:
NADP+ is reduced to create NADPH.
Hydrogen ions are pumped against their concentration gradient.

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Similar questions

Q. The following (P through U) are the main steps of chemosynthetic ATP synthesis in the light reaction. Which answer places them in correct order?

P. H+ concentration gradient established

Q. H+ diffuses through ATP synthase

R. Carriers use energy from electrons to move H+ across the membrane

S. Electrons from PSII pass along electron transport chain

T. Light excites in PSII

U. Energy of H+ flow is used by ATP synthase

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I. Outer mitochondrial membrane
II. Thylakoid membrane
III. Inner mitochondrial membrane

Q. Which of the following statements is / are wrong with regard to active transport?
(i) Uses ATP energy to pump molecules
(ii) It works against concentration gradient
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(iv) Carrier proteins are non-specific in their function

Q. The following (P through U) are the main steps of chemosynthetic ATP synthesis in the light reaction. Which places them in correct order?
P.

H^{+}

concentration gradient established
Q.

H^{+}

diffuses through ATP synthetase
R. Carriers use energy from electrons to move

H^{+}

across the membrane
S. Electrons from PSII pass along electron transport chain
T. Light excites electrons in PSII
U. Energy of

H^{+}

flow is used by ATP synthetase to make ATP.

In thylakoids, protons travel through ATP synthase from the stroma to the thylakoid space. Therefore thecatalytic ʺknobsʺ of ATP synthase would be located

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