Question

Define the following terms and then relate them to the cell membrane transport functions that are involved with these processes. Tonicity-osmosis-endocytosis-plasmolysis.

Answer 1

Tonicity - It is a measure of osmotic pressure gradient

Tonicity is influenced only by solutes that cannot cross membranes because those are the exert effective osmotic pressure

solutes that produce Tonicity doesn’t cross cell membrane

osmosis - It is a spontaneous net movement Of solvent molecules through the selectivly permeable membrane into the region of higher concentration

Solvent molecules that exert osmosis is crossed through the cell membrane by diffusion process

Endocytosis - it is a cellular process in which substances are brought into the cell.

Transportation process By endocytosis occurs through clathrin mediated invagination pinocytosis

plasmolysis - cells lose water from them into the hypertonic solution

this process occurs due to the gap between cell wall And cell membrane when placed in hypertonic solution