Question

the cell membrane is a flexible outer layer that protects the cell, controls what goes in and out through selective permeability, and helps the cell communicate with other cells. selective permeability means the cell membrane chooses what can enter or leave, keeping the cell healthy. passive transport: molecules move naturally from areas of high concentration to low concentration without using energy. osmosis: a type of passive transport where water moves across the membrane to balance water levels. active transport: molecules are moved against their concentration gradient using energy (atp). choose the correct answer. what is osmosis? the creation of energy without using molecules the movement of large particles through the membrane and into the cell the movement of water across the membrane to balance water levels

Explanation:

Osmosis is defined as the movement of water across a semi - permeable membrane (like the cell membrane) from an area of high water concentration to an area of low water concentration to balance water levels, without using energy. This matches the description in the third option.

Answer:

The movement of water across the membrane to balance water levels