Lesson 2.1 Diffusion, Osmosis, & Cell Membrane

What is a cell?

• basic unit of life

• all things are made of them

• perform all life processes

• none of these

What does selectively permeable mean?

• Solid wall nothing in or out

• some things in and keeps others out

Diffusion allows these substances to move through the cell membrane.

• oxygen

• carbon dioxide

• glucose

• water

Osmosis involves this substance only.

• oxygen

• carbon dioxide

• water

Equal concentration is called...

• equations

• equalizers

• equilibrium

Diffusion and Osmosis both require energy.

• True

• False