Question

Match the enzymes and their uses as given in the columns.

Enzymes	Uses
A. Ligases	p. To unwind the supercoils of DNA helix
B. Topioisomerase	q. In transcription
C. RNA polymerase II	r. To join the cut ends of DNA
D. Zymase	s. In translation
	t. Fermentation

• A. A-r, B-p, C-q, D-s
• B. A-r, B-p, C-q, D-t
• C. A-p, B-r, C-q, D-t
• D. A-r, B-q, C-p, D-t

Answer 1

The correct option is B A-r, B-p, C-q, D-t

Enzymes are biological catalysts which catalyze specific for reactions. Ligases are the enzymes which can join the cut ends of two DNA. Topoisomerases are the enzyme which bring about topological changes in DNA. The most important reaction catalysed by topoisomerase is easing of DNA supercoils during DNA replication. In eukaryotes, RNA polymerase II catalyzes the formation of mRNA. Zymase is the enzyme which catalyzes the fermentation.