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  • Match the following and choose the correct option from those given below Column A Column B A Molecular oxygen i a ketoglutaric acid

Match the following and choose the correct option from those given below.

Column A   

Column B

A.Molecular oxygen 

          i. a-ketoglutaric acid

B.Electron acceptor

        ii. hydrogen acceptor

C.Pyruvate dehydrogenase  

          iii. cytochrome c

D.Decarboxylation   

       iv. Acetyl-CoA

                                  
 (a) A-ii, B-iii, C-iv, D-i
(b) A-iii, B-iv, C-ii, D-i
(c) A-ii, B-i, C-iii, D-iv
(d) A-iv, B-iii, C-i, D-ii

Answers (1)

The answer is the option (a) A – (ii), B – (iii), C – (iv), D – (i)

In the electron transport chain, molecular oxygen serves as the last electron acceptor. But when it interacts with protons, water is created.
Therefore, the hydrogen acceptor is molecular oxygen.
Cytochrome is an electron acceptor.

Cytochrome C is one of the several electron acceptors found in the electron transport chain. Electrons from the FMN complex are accepted by it.
Therefore, cytochrome C is the appropriate match.

Following the decarboxylation of pyruvic acid to acetic acid, the enzyme pyruvate dehydrogenase catalyses the reduction of acetic acid to Acetyl-CoA.

Isocitrate undergoes decarboxylation and transforms into α-Ketoglutaric acid in the Krebs cycle.
 

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