Q.Phagocytosis is also known as:

The plasma (cell surface) membrane is the thin, selectively permeable boundary - under 10 nm thick - that holds in a cell's cytosol and controls what enters and leaves. Its accepted structure is the Fluid Mosaic Model, proposed in 1972 by Singer and Nicolson: a phospholipid bilayer (hydrophobic tails inward, hydrophilic heads outward) studded with integral proteins (embedded through the bilayer) and peripheral proteins (attached to just one surface), plus a small amount of carbohydrate bound to lipids or proteins to form the glycocalyx. Because phospholipids have small polar head groups they can slowly flip-flop between the two layers, but the far bulkier membrane proteins essentially cannot. The membrane transports molecules by both energy-dependent and energy-independent routes using …