Membranes & Receptors: Structure and Functions

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Questions and Answers

Which of the following is the main function of the plasma membrane?

Regulates the cell's energy production
Facilitates protein synthesis within the cell
Controls the movement of genetic material in and out of the cell
Protects cell components and allows selective passage of nutrients and waste materials (correct)

What is the role of unsaturated fatty acids and cholesterol in membrane fluidity?

Both unsaturated fatty acids and cholesterol increase membrane rigidity
Unsaturated fatty acids increase fluidity, while cholesterol decreases it (correct)
Unsaturated fatty acids decrease fluidity, while cholesterol increases it
Both unsaturated fatty acids and cholesterol decrease membrane fluidity

Which class of membrane proteins is responsible for transporting molecules across the membrane?

Receptor proteins
Recognition proteins
Enzymatic proteins
Transport proteins (correct)

What is the main purpose of the cytoskeleton in relation to the erythrocyte membrane?

<p>Providing structural support and maintaining cell shape (D)</p> Signup and view all the answers

What is the function of organelle membranes in eukaryotic cells?

<p>They have structures and functions similar to the plasma membrane, with differences related to their specific functions (D)</p> Signup and view all the answers

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