what is bulk transport? Name special process involved in bulk transport of materials across plasma membrane
Answers
Answer:
The movement of macromolecules such as proteins or polysaccharides into or out of the cell is called bulk transport.
A concentration gradient exists that would allow ions and polar molecules to diffuse into the cell, but these materials are repelled by the hydrophobic parts of the cell membrane. Facilitated diffusion uses integral membrane proteins to move polar or charged substances across the hydrophobic regions of the membrane.
Bulk transport refers to 'movement of the macromolecules' like proteins or polysaccharides in to or away from cell.
EXPLANATION:
They are basically two types exocytosis and endocytosis. The exocytosis materials are "exported out of the cell" via vesicles and endocytosis involves the transportation in to cells via "membrane channels".
For example: lipid layers.
Endocytosis is further divided in to 'phagocytosis', 'pinocytosis' and 'receptor mediated cytosis'. Both the process requires ATP energy molecules.