Q6 of 360 Page 118

Describe the proteins of plasma membrane.

There are two types of proteins molecules are found in plasma membrane:

(i) Intrinsic proteins -They completely cover the lipid bilayer.’

(ii) Extrinsic proteins – These occur either on the outer surface or on the inner surface of lipid layer.

Mention differences between light microscope and electron microscope.

Give a brief account of discovery of the cell.

Enumerate functions of plasma membrane.

Give an example of diffusion across plasma membrane.