(D) The correct answer is $D$. Most enzymes are proteins in nature, but some are $RNA$ molecules known as ribozymes. There are no known lipids that fu

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Most enzymes are proteins but some are lipids.

(D) The correct answer is $D$. Most enzymes are proteins in nature, but some are $RNA$ molecules known as ribozymes. There are no known lipids that function as enzymes. Therefore, the statement that 'some enzymes are lipids' is incorrect.

Class 11 Biology Biomolecules Enzymes

Medium

Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?

A
Enzymes require optimum pH for maximal activity.
B
Enzymes are denatured at high temperature but in certain exceptional organisms they are effective even at temperatures $80^{\circ}C - 90^{\circ}C$.
C
Enzymes are highly specific.
D
Most enzymes are proteins but some are lipids.