BIO NMDCAT Inhibitors

nmdcat.online July 13, 2026

4. The experimental observation indicates that enzyme activity remains low despite a marked increase in substrate concentration. The most appropriate explanation is

A. Non-competitive inhibition

✓

B. Competitive inhibition

C. Substrate activation

D. Product acting as substrate

📝 Explanation

Since increasing substrate fails to restore activity, the inhibitor likely binds outside the active site and changes enzyme conformation. Competitive inhibition would be overcome by excess substrate. Concept tested: Interpretation of experimental data.

📖 Additional Information

Non-competitive inhibition
Competitive inhibition
Substrate activation
Product acting as substrate

Since increasing substrate fails to restore activity, the inhibitor likely binds outside the active site and changes enzyme conformation. Competitive inhibition would be overcome by excess substrate. Concept tested: Interpretation of experimental data.

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