Identify the step in tricarboxylic acid cycle, which does not inv… - Vidyadip

MCQ

Identify the step in tricarboxylic acid cycle, which does not involve oxidation of substrate.

A
Succinic acid $\rightarrow$ Malic acid
✓
Succinyl-$CoA$ $\rightarrow$ Succinic acid
C
Isocitrate $\rightarrow \alpha$-ketoglutaric acid
D
Malic acid $\rightarrow$ Oxaloacetic acid

✓

Answer

Correct option: B.

Succinyl-$CoA$ $\rightarrow$ Succinic acid

b
Oxidation involves the loss of electrons (often as part of hydrogen) from a molecule, leaving to an increase in its oxidation state. This process is typically associated with the transfer of electrons to an electron acceptor which is reduced in the process.

The conversion of succinyl $COA$ to succinic acid does not involve oxidation of substrate.

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