BIO NMDCAT ENZYMES

nmdcat.online July 11, 2026

Among the following statements, the one that best describes the effect of a competitive inhibitor is

A. It binds to the enzyme-substrate complex

B. It binds irreversibly to the active site

C. It decreases the apparent Km of the enzyme

D. It competes with the substrate for binding to the enzyme's active site

✓

📝 Explanation

A competitive inhibitor binds directly to the active site. This inhibition is overcome by high substrate concentrations; Vmax remains unchanged but apparent Km increases.

📖 Additional Information

It binds to the enzyme-substrate complex
It binds irreversibly to the active site
It decreases the apparent Km of the enzyme
It competes with the substrate for binding to the enzyme's active site

A competitive inhibitor binds directly to the active site. This inhibition is overcome by high substrate concentrations; Vmax remains unchanged but apparent Km increases.

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