Biology Cell PMC 2020
PMDC Verified Question 103 of 143
According to the fluid mosaic model of cell membrane, which zone is embedded inside?
A
Filamentous
B
Hydrophobic
C
Hydrophilic
D
Globular
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Hydrophobic
Concept: Phospholipids are amphipathic molecules, meaning they have distinct water-loving and water-fearing regions.

Solution: In an aqueous environment, phospholipids organize into a bilayer where the non-polar, fatty acid tails point inward to escape water. Thus, the embedded inner zone of the membrane is strictly hydrophobic (water-repelling).

Distractor Autopsy: The hydrophilic (water-loving) phosphate heads face the outward and inward aqueous environments of the cell.

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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