What is Mechanism of secretion of macro molecules by cell in the manner of fusion with vesicle is and explain in detail?
(A) Phagocytosis # Phagocytosis:> Phagocytosis is the cellular process of phagocytes and protists of engulfing solid particles by the cell membrane to form an internal phagosome. Phagocytosis is a specific form of endocytosis involving the vesicular internalization of solid particles, such as bacteria, and is therefore distinct from other forms of endocytosis such as the vesicular internalization of various liquids.# Pinocytosis> In cellular biology, pinocytosis ("cell-drinking", "bulk-phase pinocytosis", "nonspecific, non-adsorptive pinocytosis", "fluid endocytosis") is a form of endocytosis in which small particles are brought into the cell suspended within small vesicles which subsequently fuse with lysosomes to hydrolyze, or to break down, the particles.# Exocytosis> Exocytosis is the durable process by which a cell directs the contents of secretory vesicles out of the cell membrane.# Endocytosis> Endocytosis is the process by which cells absorb molecules (such as proteins) from outside the cell by engulfing it with their cell membrane. It is used by all cells of the body because most substances important to them are large polar molecules that cannot pass through the hydrophobic plasma membrane or cell membrane. The process opposite to endocytosis is exocytosis.