Some enzymes require the presence of a non protein molecule to behave catalytically. An enzyme devoid of this molecule is called a:
Correct answer: B. Apoenzyme
- A. Holoenzyme
- B. Apoenzyme
- C. Coenzyme
- D. Zymoenzyme
Explanation
An enzyme devoid of the necessary non-protein molecule for its catalytic activity is often referred to as an "apoenzyme." The non-protein molecule required by an enzyme for its catalytic activity is called a "cofactor" or "coenzyme." When the cofactor is tightly and permanently bound to the apoenzyme, forming a complete and active enzyme, the entire structure is termed a "holoenzyme."
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About Enzymes
Enzymes are biological catalysts that lower activation energy without being consumed, and their specificity is explained by the lock and key and induced fit models. Work includes the effects of temperature, pH and substrate concentration on reaction rate, plus competitive and non-competitive inhibition and how these differ.
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