biology / Cells / free

Cell Structure

Map the compartments that let one cell run many processes at once.

Follow the mechanism1 / 3

A cell needs boundaries. A selectively permeable membrane separates the cell from its surroundings and controls which materials enter, leave, or remain concentrated.

04 / PRACTICE

Make the biology yours.

0 / 3 checked

Answer from the model, then use the explanation to connect the visual mechanism to the biological rule.

CHECK 1 / 3

What makes the plasma membrane selective rather than simply open?