Question

fill in the blank question

a non-functional enzyme which needs a cofactor is called a(n)

Explanation:

Identify the components of a conjugated enzyme

An inactive, protein-only portion of an enzyme that requires a non-protein cofactor to become active is defined as an apoenzyme.

Determine the correct terminology

When the apoenzyme binds with its cofactor, it forms the active, complete enzyme known as a holoenzyme. Therefore, the non-functional protein component itself is the apoenzyme.

Answer:

A non-functional enzyme which needs a cofactor is called a(n) <blank>apoenzyme</blank>.