Topic: Enzymes: types, properties, action, classification· Cell Structure and Function

The protein portion of an enzyme is called :

1. Cofactor

2. Coenzyme

3. Apoenzyme

4. Prosthetic group

Doubtly Asked 30 Oct 2026 NEET UG 2025 Practice test neet Save WhatsApp Report

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Answer: 3. Apoenzyme

Key idea: A conjugated enzyme has a protein part and a non-protein part.

The protein part is the apoenzyme. The non-protein part is a cofactor (prosthetic group, coenzyme or metal ion). Apoenzyme + cofactor = holoenzyme. Option 3.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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The protein portion of an enzyme is called :

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