Overview of passive transport mechanisms including simple diffusion, facilitated diffusion via channel and carrier proteins, and osmosis of water through a semipermeable membrane.

1. Identify the two main types of passive transport shown in the image: Diffusion and Osmosis.
2. Break down Diffusion into its two subtypes: Simple Diffusion and Facilitated Diffusion.
3. Explain Simple Diffusion as the movement of particles without a helper protein, directly through the cell membrane.
4. Describe Facilitated Diffusion as the movement of particles using a helper protein, which includes channel proteins and carrier proteins.
5. Define Osmosis as the movement of water molecules through a semipermeable membrane.
6. Note that both types of passive transport occur from areas of higher concentration to lower concentration, without the use of energy.