Almost all enzymes are proteins

Read of the following statements and choose the option which has all the correct statements :- (a) Enzymes are highly specific to substrate (b) Enzymes require optimum temperature and pH for maximum activity. (c) Almost all enzymes are protein (d) Enzyme increase the activation energy Options :-

Assertion : All enzymes are proteins but all proteins are not enzymes. Reason : Keratin is an enzyme.

Assertion : All enzymes are proteins . Reason : Ribozymes are enzymes without proteins .

Non-proteinaceous enzyme that acts as a catalyst for the formation of peptide bond is Or ''All enzymes are proteins.'' This statement is now modified because an apparent exception to this biological truth is

All enzymes are not proteins. Which of the following enzyme is not a protein?

All enzymes are proteins except

Assertion(A): All enzymes are proteins, but all proteins are not enzymes. Reason(R): Enzymes are biocatalysts and posses a stable configuration having active sites.