The type of environment that results from an equal amount of solute and solvent in and out of the cell is called an isotonic environment.

Here's why:

* Isotonic: Means "same strength" referring to the solute concentration. In an isotonic environment, the concentration of solutes (dissolved substances) is the same inside the cell as it is outside the cell. This means there is no net movement of water across the cell membrane.

* Solute: A substance that dissolves in a solvent. Examples: salt, sugar.

* Solvent: A substance that dissolves a solute. Example: water.

In an isotonic environment, the cell is in equilibrium. There is no tendency for water to move into or out of the cell, and the cell maintains its normal shape and function.