Question

Assertion : Hydrolases are the enzymes which catalyse the hydrolysis of ester, ether, peptide, glycosidic, C-C or P-N etc., bonds.
Reason : Lyases are the enzymes catalysing the linking together of 2 compounds like joining of C-O, C-N, P - O etc. bonds.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

There are various types of enzyme depending on their action. Hydrolases catalyse the hydrolysis of ester, ether, peptide, glycosidic, $C—C,C—$ halide, $P—N$ bonds etc., which are formed by dehydration and condensation. Hydrolases break up large molecules into smaller ones with the help of hydrogen and hydroxyl groups of water molecules. The phenomenon is called hydrolysis. Lyases are the enzymes which cause cleavage, removal of groups without hydrolysis, addition of groups to double bonds or removal of a group producing double bond, e.g., histidine decarboxylase breaks histidine to histamine and $C{O}_2$.