Define:
(a) Plasmolysis
(2) Exocytosis
(3) Endocytosis
Define:
(a) Plasmolysis
(2) Exocytosis
(3) Endocytosis
When cell is placed in a hypertonic solution water moves out, first from cytoplasm and then from vacuole. Cell membrane shrinks away from the cell wall. This is known as plasmolysis.
Endocytosis is the process involving the bulk transport of materials into the cell through membranes. It occurs by the infolding or extension of cell surface membrane to form a vesicle or vacuole. It is of two types, pinocytosis (cell drinking) and phagocytosis (cell eating). Endocytosis occurs through pseudopodia in amoeba.
Exocytosis Exocytosis is the exact opposite process of endocytosis. Exocytosis is the cellular secretion of molecules by the fusion of vesicles containing them with the plasma membrane. Waste materials may be removed or useful materials may be secreted by this method.
When cell is placed in a hypertonic solution water moves out, first from cytoplasm and then from vacuole. Cell membrane shrinks away from the cell wall. This is known as plasmolysis.
Endocytosis is the process involving the bulk transport of materials into the cell through membranes. It occurs by the infolding or extension of cell surface membrane to form a vesicle or vacuole. It is of two types, pinocytosis (cell drinking) and phagocytosis (cell eating). Endocytosis occurs through pseudopodia in amoeba.
Exocytosis Exocytosis is the exact opposite process of endocytosis. Exocytosis is the cellular secretion of molecules by the fusion of vesicles containing them with the plasma membrane. Waste materials may be removed or useful materials may be secreted by this method.
