AIPMT PRELIMS2008Botany-Cell Biology
AIPMT PRELIMS 2008 Botany Cell Membrane Structure MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Keeping in view the 'fluid mosaic model' for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
A
While proteins can flip-flop, lipids cannot
B
neither lipids, nor proteins can flip-flop
C
Both lipids and proteins can flip-flop
D
While lipids can rarely flip-flop proteins cannot
Correct Answer
Option D
Detailed Explanation
In the fluid mosaic model, lipids can occasionally flip-flop between layers, but proteins cannot due to their size and polarity.
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