AP BIOLOGY

Detailed explanation-1: -The optimal condition for an animal cell is to be in an isotonic solution, with an equal amount of water and solutes both inside and outside. When a plant cell is in an isotonic solution, its cells are no longer turgid and full of water, and the leaves of the plant will droop.

Detailed explanation-2: -Animal cells need to be in isotonic solutions to be at homeostasis. Homeostasis is a balance and is important for all living things to maintain. Animal cells lack a cell wall, so too much water coming into the cell will cause it to burst and too much water leaving will cause it to shrink and die.

Detailed explanation-3: -Cells placed in an isotonic solution will neither shrink nor swell since there is no net gain or loss of water. Cell cytoplasm, body fluids (including blood, sweat, and tears), and 0.9 wt % NaCl solution contain approximately the same solute concentration.

Detailed explanation-4: -Animal cells, like red blood cells, function optimally in isotonic solutions.

Detailed explanation-5: -If a cell is placed in an isotonic solution, there will be no net flow of water into or out of the cell, and the cell’s volume will remain stable. If the solute concentration outside the cell is the same as inside the cell, and the solutes cannot cross the membrane, then that solution is isotonic to the cell.