Question

Write major chractersticks of cell membrane .


Class 9th
Please answer it's urgent​

Answer 1

Explanation:

Biological membranes have three primary functions:

(1) they keep toxic substances out of the cell

(2) they contain receptors and channels that allow specific molecules, such as ions, nutrients

Answer 2

Explanation:

1:It separates the cell contents from their external environment.

2:It controls exchange of materials between cell and environment.

3:It acts as a receptor sites for recognizing hormones, neurotransmitters and other chemicals.