Question

fill in the blank question

(a(n)) blank enzyme consists of protein alone, while a(n) blank enzyme (or holoenzyme) consists of protein and nonprotein components.

Explanation:

Identify the enzyme consisting of protein alone

An apoenzyme is the protein portion of an enzyme that requires a cofactor to become catalytically active. When referring to simple enzymes that consist of protein alone, or the protein-only portion of a conjugated enzyme, the term is "apoenzyme".

Identify the enzyme consisting of protein and nonprotein components

An enzyme that consists of both a protein portion (apoenzyme) and a nonprotein portion (cofactor or coenzyme) is known as a conjugated enzyme, which is also referred to as a holoenzyme when fully active.

Answer:

A(n) <blank>apoenzyme</blank> enzyme consists of protein alone, while a(n) <blank>conjugated</blank> enzyme (or holoenzyme) consists of protein and nonprotein components.