Question

give the chemical composition and functions of plasma membrane and cell wall

Answer 1

Plasma membrane is present in both animal and plant cells and is composed of lipoproteins (lipids and proteins) which are synthesized by the endoplasmic reticulum. It allows the movement of particles in and out of it, but some selected ones only. Hence, it is also called a selectively permeable membrane. 

Cell wall is present only in plant cell and is composed of cellulose. It provides rigidity to the cell and it also allows particles to move through it.

Hope this answer helps you

Answer 2

Explanation:

jcjfjfjjdkodosoososososososoososososososj