BIOMOLECULES AND ENZYMES

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BIOLOGY

PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In non-competitive inhibition, the enzyme is ____ able to reach the same maximum rate of reaction because some of the enzymes are ____ to react.
A
always, available
B
not, available
C
always, unavailable
D
not, unavailable
Explanation: 

Detailed explanation-1: -In noncompetitive inhibition, the inhibitor binds at an allosteric site separate from the active site of substrate binding. Thus in noncompetitive inhibition, the inhibitor can bind its target enzyme regardless of the presence of a bound substrate.

Detailed explanation-2: -The noncompetitive inhibitor binds to a different site on the enzyme; it doesn’t block substrate binding, but it causes other changes in the enzyme so that it can no longer catalyze the reaction efficiently.

Detailed explanation-3: -Non-competitive inhibition involves a molecule binding to a site other than the active site (an allosteric site) The binding of the inhibitor to the allosteric site causes a conformational change to the enzyme’s active site.

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