In an isotonic solution, there is no net flow of water into or out of the cells, leading to a state of dynamic equilibrium. This means that the concentration of solutes outside the cell is equal to the concentration of solutes inside the cell, resulting in a balanced state where the rates of osmosis (movement of water) in both directions are equal.
So the correct phrase to describe cells in an isotonic solution is "dynamic equilibrium."
- Hypertonicity refers to a solution with a higher concentration of solutes than the cell, causing water to flow out of the cell.
- Hyposalinity isn't typically used in this context but refers to a lower concentration of solutes.
- Active transport is a process that requires energy to move substances against their concentration gradient and is not directly related to the state of the solution being isotonic.
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