Biology Cell ETEA 2022
PMDC Verified Question 80 of 143
The statement 'the membrane is like a sea of lipids in which proteins are floating' represents:
A
Gortel and Grendel model
B
S. J. Singer and Nicholson model
C
J. F. Danielle and Davison model
D
Robertson model
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: S. J. Singer and Nicholson model
Concept: The historical progression of membrane models culminated in our modern understanding of membrane dynamics.

Solution: In 1972, S. J. Singer and G. L. Nicolson proposed the Fluid Mosaic Model. They beautifully described the membrane as a fluid "sea of lipids" in which mosaic "icebergs" of proteins float.

Distractor Autopsy: Danielli and Davson proposed the incorrect "sandwich model" where solid protein layers coated the outside of the lipid bilayer.

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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