Answer is (B)Photophosphorylation

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Direct synthesis of ATP from metabolites is called both 1 and 3

Option D

Explanation:

• ATP is synthesized from ADP by phosphorylation reaction. This reaction can be of various type when the reaction takes place in the presence of oxygen is known as oxidative phosphorylation.

• However the phosphorylation can takes place due to Redox reaction using different substrates. This type of phosphorylation is known as substrate level phosphorylation.

To know more about synthesis of ATP,

Direct synthesis of ATP from metabolites is called A.Oxidative ...

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