Question

The fluid-mosaic model of the cell membrane suggests that the membrane is primarily composed of proteins and lipids. Which of the following is a function of proteins in the cell membrane

A to read messenger RNA to assemble amino acids
B. to provide a hydrophilic head so that water can enter the cell
c. to package and sort molecules to be sent in vesicles
D to allow substances to cross the plasma membrane via active transport

Answer 1

B

Step-by-step explanation:

Protein as amino acids

Answer 2

The fluid Mosiac Model is a theory that explains the structure of the functional cell membranes. The model is characterized by the lipid bilayer, in which protein molecules are embedded.

The correct answer is:

Option B. to provide a hydrophilic head so that water can enter the cell

The functions of protein in the plasma membrane are:

1. The lipid bilayer is amphiphilic, such that they have a hydrophobic and a hydrophilic end.

2. Membrane proteins are involved in the transportation of ions, molecules, or other substances across the membrane.

3. The membrane protein is selectively permeable such that, the aquaporins are the family of proteins, which is involved in the flow of water inside and outside the cell.

Thus, the correct answer is Option B.

To know more about fluid mosaic model, refer to the following link: