Botany-Cell Membrane
NEET Botany Cell Membrane MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following statements about the cell membrane is correct?
A
The cell membrane is composed of a phospholipid bilayer with embedded proteins.
B
The cell membrane is impermeable to all substances, preventing entry of ions.
C
Cholesterol molecules in the cell membrane help to stabilize its structure under varying temperatures.
D
The cell membrane does not play a role in cell signaling and communication.
Correct Answer
Option A
Detailed Explanation
The cell membrane is indeed composed of a phospholipid bilayer with embedded proteins, which is a fundamental characteristic of its structure. Cholesterol does stabilize the membrane, but the statement about impermeability and the role in signaling are incorrect based on the understanding of membrane functions.
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