Cell membranes consist primarily of phospholipids and protein. While carbohydrates are also present, they are not the primary component of cell membranes. Additionally, cell membranes are not passive barriers, but rather selectively allow certain molecules to pass through via various mechanisms such as transporters and channels.

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Cell Membranes

Question 8

Multiple Choice

Cell membranes

A) Are components of the cytosol
B) Are passive barriers against the passage of molecules from one side to the other
C) Consist primarily of protein and carbohydrate
D) Consist primarily of phospholipids and protein
E) Both are passive barriers against the passage of molecules from one side to the other and consist primarily of protein and carbohydrate are correct

Correct Answer: