Biomolecules Question 65
65. An organic substance bound to an enzyme and essential for its activity is called
[2006]
(a) Holoenzyme
(b) Apoenzyme
(c) Isoenzyme
(d) Coenzyme
Show Answer
Answer : d
Hints & Solutions
(d) Coenzyme is an organic substance that enhances the action of an enzyme by binding with the protein molecule. Holoenzyme is a biochemically active compound formed by the combination of an enzyme with a coenzyme. Apoenzyme is the protein part of an enzyme to which the coenzyme attaches to form an active enzyme. Isoenzyme is one of the several forms of an enzyme that catalyse the same reaction but differ from each other in such properties as substrate affinity and maximum rates of enzyme substrate reaction.
