Biology Cell MDCAT 2015
PMDC Verified Question 139 of 143
Which organelle is bounded by two membranes?
A
Mitochondria
B
Lysosome
C
Nucleolus
D
Ribosome
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Mitochondria
Concept: Organelles are categorized by their protective boundaries (none, one, or two membranes).

Solution: The nucleus, chloroplasts, and mitochondria are uniquely bounded by a double membrane (an inner and an outer membrane).

Distractor Autopsy: Lysosomes are single-membrane bounded. Ribosomes and the nucleolus are completely non-membranous.

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.

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.