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Question

Blocking action of enzyme through blocking its active site is


A
Allosteric inhibition
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B

Feedback inhibition

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C

Competitive inhibition

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D

Non-competitive inhibition

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Solution

The correct option is C

Competitive inhibition


In competitive inhibition, the substrate and inhibitor cannot bind to the enzyme at the same time. This usually results from the inhibitor having an affinity for the active site of an enzyme where the substrate also binds; the substrate and inhibitor compete for access to the enzyme's active site.


In Allosteric regulation (or allosteric control) is the regulation of a protein by binding an effector molecule at a site other than the protein's active site.

In Feedback inhibition is the phenomenon where the output of a process is used as an input to control the behavior of the process itself, oftentimes limiting the production of more product.

In non-competitive inhibition, the binding of the inhibitor to the enzyme reduces its activity but does not affect the binding of substrate.


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