What is the main feature of the plasma membrane?

What is the nature of plasma membrane ?

What is the difference between the plasma membrane and cell wall? Give the functions of each one.

During the transmissin of nerve impulse through a nerve fibre,the potential on the inner side of the plasma membrane has whch type of electric charge?

Plasma membrane is a lipoproteinous and trilaminar membrane. It regulates the exchange of materials between the cystosol and extra-cellular medium. Give the reasons for the following: (a) What do you mean by lipoproteinous and trilaminar nature of plasma membrane?

What must be the main feature of a metal use for photoelectric emission?

What must be the main feature of a metal used for photoelectric emission?