Q- What is the most accepted model of structure of plasma membrane? Answer- Fluid Mosaic Model of plasma membrane is the most accepted model of structure of plasma membrane.

Q- Why is plasma membrane called a differentially permeable membrane? Answer- Plasma membrane is called differentially permeable membrane because its permeability is different to different substances and varies with requirement.  Easy way to draw labelled diagram of plasma membrane:

Q- What is cyclosis? Answer- Cyclosis the term for the streaming movement of cytoplasm. 

Q- What is the primary function of plasma membrane? Answer- The primary function of plasma membrane is to regulate the exchange of materials between cytoplasm and extracellular fluid. Easy way to draw labelled diagram of plasma membrane: