Multiple Choice
Which component of cell membranes provides flexibility to the structure?
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6. The Membrane
Biological Membranes
Multiple Choice
Which of the following best describes the primary function of the cell membrane?
A
It provides structural support to the cell.
B
It regulates the movement of substances in and out of the cell.
C
It stores genetic information.
D
It synthesizes proteins for the cell.
Verified step by step guidance1
Understand the structure of the cell membrane: The cell membrane, also known as the plasma membrane, is a phospholipid bilayer with embedded proteins, cholesterol, and carbohydrates.
Identify the primary function of the cell membrane: The main role of the cell membrane is to regulate the movement of substances into and out of the cell, maintaining homeostasis.
Differentiate between the functions: While the cell membrane does provide some structural support, its primary function is not structural support, storing genetic information, or synthesizing proteins.
Consider the role of membrane proteins: Proteins in the cell membrane assist in transport, acting as channels or carriers for molecules, which supports the primary function of regulating movement.
Conclude with the correct function: Based on the understanding of the cell membrane's structure and role, the best description of its primary function is regulating the movement of substances in and out of the cell.
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