AP BIOLOGY

Detailed explanation-1: -In chemical biology, tonicity is a measure of the effective osmotic pressure gradient; the water potential of two solutions separated by a partially-permeable cell membrane.

Detailed explanation-2: -In healthcare settings and biology labs, it’s often helpful to think about how solutions will affect water movement into and out of cells. The ability of an extracellular solution to make water move into or out of a cell by osmosis is known as its tonicity.

Detailed explanation-3: -The measure of the tonicity of a solution, or the total amount of solutes dissolved in a specific amount of solution, is called its osmolarity. Three terms-hypotonic, isotonic, and hypertonic-are used to relate the osmolarity of a cell to the osmolarity of the extracellular fluid that contains the cells.

Detailed explanation-4: -Introduction. Tonicity. Tonicity is the capability of a solution to modify the volume of cells by altering their water content. The movement of water into a cell can lead to hypotonicity or hypertonicity when water moves out of the cell.

Detailed explanation-5: -The solute concentration relative to that of another side of the cell membrane affects the osmosis process is called tonicity. Thus, the relative concentration of solute on either side of the cell membrane determines the direction and extent of diffusion.