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Questions  

Inhibition of succinic dehydrogenase is done by:

a
Malonate, and it is an example of competitive inhibition
b
Ricin, and it is an example of competitive inhibition
c
Fatty acid, and it is an example of non-competitive inhibition
d
Cyanide, and it is an example of competitive inhibition

detailed solution

Correct option is A

When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. E.g., inhibition of succinic dehydrogenase by malonate which closely resembles the substrate succinate in structure. Such competitive inhibitors are often used in the control of bacterial pathogens.

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