Assertion: Synthesis of ATP from ADP in chloroplast is called photophosphorylation. Reason: This

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Assertion: Synthesis of ATP from ADP in chloroplast is...

Key Concepts

Light-Dependent Reactions

Light-dependent reactions are the initial set of reactions in photosynthesis that take place in the thylakoid membranes of chloroplasts. During these reactions, light energy is absorbed by pigments and converted into chemical energy in the form of ATP and NADPH, which are then used in the Calvin cycle for carbon fixation.

Electron Transport Chain

The electron transport chain is a series of protein complexes and other molecules embedded in the thylakoid membrane that facilitate the transfer of electrons. This transfer is coupled with the pumping of protons to create a gradient, which is then used by ATP synthase to produce ATP, linking the absorption of light to ATP synthesis.

Photophosphorylation

Photophosphorylation refers to the process of ATP synthesis that occurs in chloroplasts during the light-dependent reactions of photosynthesis. It is characterized by the utilization of light energy to drive electron transport through the thylakoid membranes, which generates a proton gradient that powers ATP synthesis via ATP synthase.

ATP Synthesis

ATP synthesis is the biochemical process of forming adenosine triphosphate (ATP) from adenosine diphosphate (ADP) and inorganic phosphate. This process provides the essential energy currency for cellular functions and occurs through mechanisms such as photophosphorylation in chloroplasts and oxidative phosphorylation in mitochondria.

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