Question

cell membranes
read the statements below. check all the ones that correctly describe cell membranes.
□ cell membranes allow all types of materials to enter and exit.
□ cell membranes only allow water and gases, such as oxygen, to enter and exit.
□ cell membranes allow certain types of materials to enter and exit.
□ the passing of materials into and out of cells does not require any energy.
□ some materials enter and exit a cell with no needed energy, but other materials use the cells energy.

Explanation:

Cell membranes are semi - permeable, allowing certain materials to pass through. Passive transport (like diffusion and osmosis) doesn't require energy, while active transport does.

Answer:

• Cell membranes allow certain types of materials to enter and exit.
• Some materials enter and exit a cell with no needed energy, but other materials use the cell's energy.