Cells must be in osmotic equilibrium with their surrounding environments, because if they swell or shrink their membranes will rupture.

Animal cells

Explanation:

Osmotic rupture, known as cytolysis, happens when a cell suddenly bursts due to an osmotic imbalance in the cell. This only occur in animals and protozoans who do not have cell walls to prevent the membrane from rupturing.

https://youtu.be/rMa9MzP19zI

Hypertonic, Hypotonic and Isotonic Solutions!

Animal cells must be in osmotic equilibrium with their surrounding environments, because if they swell or shrink their membranes will rupture.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.