Ligases is a class of enzymes responsible for catalysing the linking together of two compounds.3 Which of the following bonds is not catalysed by it?

Question

Ligases is a class of enzymes responsible for catalysing the linking together of two compounds.

Which of the following bonds is not catalysed by it?

(1) C – C

(2) P – O

(3) C – O

(4) C – N

Answer 1

Correct option is (1) C – C

Option (1) is the correct answer because, ligases are the enzymes that catalyse the linking together of 2 compounds, e.g., enzymes which catalyse joining of C – O, C – S, C – N, P – O etc. bonds.

Options (2), (3) and (4) are wrong as ligase catalyse the joining of P – O, C – O & C – N bonds.