Biology Cell DUHS 2022
PMDC Verified Question 83 of 143
Plasma membrane is:
A
Selective permeable
B
Permeable
C
Sub-permeable
D
Impermeable
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Selective permeable
Concept: The cell must carefully regulate its internal environment to maintain homeostasis.

Solution: The plasma membrane is selectively permeable (or differentially permeable). It allows certain molecules (like small non-polar gases) to pass freely while restricting others (like large macromolecules and ions), selectively transporting them via proteins.

Distractor Autopsy: If it were completely permeable, the cell couldn't maintain homeostasis. If impermeable, the cell would die from starvation and waste buildup.

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.

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