Which of the following is a primary function of integral membrane proteins?

• A. Facilitating the transport of molecules across the cell membrane
• B. Synthesizing proteins within the cytoplasm
• C. Storing genetic information
• D. Providing structural support to the cell

Answer: (A)

Verified step by step guidance

1. Understand the role of integral membrane proteins: Integral membrane proteins are embedded within the lipid bilayer of cell membranes and play crucial roles in various cellular processes.
2. Identify the primary functions of integral membrane proteins: These proteins are primarily involved in facilitating the transport of molecules across the cell membrane, acting as channels or carriers.
3. Differentiate between the options: Consider each option and determine if it aligns with the known functions of integral membrane proteins.
4. Analyze the option 'Facilitating the transport of molecules across the cell membrane': This is a key function of integral membrane proteins, as they help in the movement of ions, nutrients, and other molecules into and out of the cell.
5. Conclude by selecting the correct function: Based on the analysis, the primary function of integral membrane proteins is facilitating the transport of molecules across the cell membrane.