What is the function of the cell membrane

The function of the cell membrane is to protect the cell from unwanted substance, as well as allow needed substances into the cell. So, you could describe the cell membrane as a “security gate”. It’s is selectively permeable meaning that it one lets specific things in and out of the cell.

The cell membrane protects the inside of the cell, it supports and gives the cell its shape and it controls the movement of materials into and out of a cell. Hope this helps!

The correct answer is - Ψ = ΨS + ΨP.

Explanation:

The movement of the water in a solution where is two different concentrations present can be determined by measuring the water potential (Ψ).

Water potential (Ψ) can be determined by the equation that depends on these two factors osmotic potential represent by ΨS and pressure potential represent by ΨP.

Ψ = ΨS + ΨP.