Tonicity is the comparison of relative concentrations of two solutions, separated by a selectively permeable membrane.
- Tonicity is the capacity of an extracellular solution to cause water to osmotically enter or exit a cell.
- Tonicity differs from osmolarity in that it considers both the relative solute concentrations and the permeability of the cell membrane to those solutes.
- When describing whether a solution would induce water to move into or out of a cell, three terms—hypertonic, hypotonic, and isotonic—are used:
A cell will lose volume if it is immersed in a hypertonic solution because there will be a net flow of water out of the cell.
A cell will increase volume if it is immersed in a hypotonic solution because there will be a net flow of water entering the cell.
If a cell is immersed in an isotonic solution, there won't be any net water inflow or outflow, and the volume of the cell will stay constant.
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The above given question is wrong, there are no options. The correct question is ______is the comparison of relative concentrations of two solutions, separated by a selectively permeable membrane.
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