Question

question 5 (multiple choice worth 4 points) (02.04r mc) what best explains the relationship between structure and function of the cell membrane? the single - layer membrane surrounding the outside of the cell allows for the easy removal of waste. the lipids and proteins that make up the membrane allow it to be selective about what enters and leaves the cell. the fluid inside the membrane buffers the chemical reactions taking place inside the cell. the lipids forming the membrane provide energy for protein synthesis.

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: Cell membranes are phospholipid bilayers, not single - layered. So this option is incorrect.
• Option 2: The cell membrane is composed of a phospholipid bilayer with embedded proteins. These components give the membrane its selective permeability, meaning it can control what enters and exits the cell. This is a key aspect of the relationship between the structure (lipids and proteins) and function (selective transport) of the cell membrane.
• Option 3: The fluid inside the membrane (cytoplasm) has its own functions, but buffering chemical reactions is not the main relationship between the membrane's structure and function.
• Option 4: Lipids in the membrane (phospholipids) are part of the structural framework, and they do not provide energy for protein synthesis. Protein synthesis gets energy from ATP, and lipids have other roles like forming the membrane structure and being part of signaling molecules.

Answer:

The lipids and proteins that make up the membrane allow it to be selective about what enters and leaves the cell.