Questions: A non-functional enzyme which needs a cofactor is called a(n) .

Transcript text: A non-functional enzyme which needs a cofactor is called a(n) $\square$ .

Solution

The answer is: apoenzyme.

Explanation:

An apoenzyme is the protein portion of an enzyme, which is inactive on its own and requires a cofactor to become functional.
Cofactors can be metal ions or organic molecules (coenzymes) that bind to the apoenzyme to form a complete, active enzyme known as a holoenzyme.
Without the cofactor, the apoenzyme remains non-functional, as it cannot catalyze reactions effectively.

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