NEET Botany Cell Membrane MCQ Question
Which of the following statements about the cell membrane is correct?
The cell membrane is composed of a phospholipid bilayer with embedded proteins.
The cell membrane is impermeable to all substances, preventing entry of ions.
Cholesterol molecules in the cell membrane help to stabilize its structure under varying temperatures.
The cell membrane does not play a role in cell signaling and communication.
Correct Answer
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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