Question

what does it mean when a membrane is semi - permeable?
only some things can get into the cell.
everything can get into the cell.

Explanation:

A semi - permeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion. This means not all substances can cross the membrane, only specific ones. The option "Only some things can get into the cell" aligns with the definition of a semi - permeable membrane as it restricts the passage of substances. The option "Everything can get into the cell" is incorrect because a semi - permeable membrane is selective.

Answer:

Only some things can get into the cell.