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During which of the following reactions substrate-level phosphorylation occurs? -

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Question

During which of the following reactions substrate-level phosphorylation occurs?

Options

  • Fumaric acid changes to malic acid.

  • Succinic acid changes to fumaric acid.

  • Succinyl CoA changes to succinic acid

  • Oxalosuccinic acid changes to a.-ketoglutaric acid.

MCQ

Solution

Succinyl CoA changes to succinic acid

Explanation:

4C succinyl-CoA is formed via oxidation and decarboxylation of α-ketoglutaric acid. In the presence of CoA and NAD, the reaction occurs. After that, succinyl-CoA is hydrolyzed to succinic acid. GDP is recovered when OTP reacts with ADP to produce ATP.

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