Biology Enzymes MDCAT 2019
PMDC Verified Question 64 of 79
This figure represents ____ inhibitor.

Inhibitor Enzyme
A
Competitive
B
Irreversible
C
Non-competitive
D
Isosteric
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Competitive
Concept:

Competitive inhibitors structurally resemble the enzyme's substrate and bind directly to the active site, preventing substrate binding.

Solution:

  • The diagram explicitly shows the inhibitor molecule binding at and blocking the enzyme's active site.
  • This is the hallmark mechanism of Competitive Inhibition (Option A).

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Enzymes MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App