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Which statement about enzymes is not cor...

Which statement about enzymes is not corect ?

A

They act as a biocatalyst i.e., they accelerate biochemical reactions

B

They are usually globular proteins

C

Their catalytic efficiency is temperature dependent

D

They can catalyse andy chemical reaction

Text Solution

Verified by Experts

The correct Answer is:
D

The reactant of an enzyme-catalysed reaction is called a substrate. An enzyme has an active site wherine the substrate fits specifically. The specificity of an enzyme results from the conformation of the protein, and the particular amino acid side chain that makes up the active site.
The specificity of an enzyme for its substrate in an example of molecular recognition. The specificity of an enzyme for its substrate is explained by a lock- and key model. Some enzymes are specific for a single substrate while some enzyme catalyse the reactions of an entire family of compounds with related structures.
An enzyme brings all the reaction groups together at its active site and helps proper positioning of these groups fort the reactions ot take place easily. Some of the amino acid side chains of the enzymes are in proper position relative to the substrate to assist its reaction as an intermolecular catalyst. An enzymes binds a substrate at its active side and there after undergoes a conformational change to impart a strain in the substrate to make it more reactive.
Enzymes have optimum activity at body temperature.
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