Which of the following is correct with reference to enzymes?

Easy

A

Enzymes work efficiently at high temperatures and high pressures.
B

Enzymes through their allosteric site, catalyse reactions at a higher rates.
C

An active site of an enzyme is a crevice or pocket into which the substrate is bound.
D

Thermal stability is an important quality of enzymes isolated from halophilic organisms.

Solution

In the tertiary structure of proteins it is noticed that the backbone of the protein chain folds upon itself, the chain criss-crosses itself and many crevices or pockets are made. One such pocket is the ‘active site’. An active site of an enzyme is a crevice or pocket into which the substrate is bound. Thus enzymes, through their active site, catalyse biochemical reactions at a higher rates.

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