Question

Define the following term:- (1)diffusion (2) osmosis (3)hypotonic solution (4) hypertonic solution (5) isotonic solution​

Answer 1

Diffusion: Some substances like carbon dioxide or oxygen can move across the cell membrane by the process called Diffusion.

Osmosis: Osmosis is the passage of water concentration through a selectively permeable membrane to a region of low water concentration till equilibrium is reached.

Hypotonic solution: If the medium surrounding the cell has a higher water concentration than the cell, meaning that the outside solution is very dilute, the cell will gain water by Osmosis. Such a solution is known as hypotonic solution.

Hypertonic solution: If the medium has a lower concentration of water then the cell, meaning that is a very concentrated solution, the cell will lose water by Osmosis. Such a solution is known as a hypertonic solution.

Isotonic solution: If the medium has exactly the same water concentration as the cell, there will be no net movement of water across the cell membrane. Such a solution is known as isotonic solution.