Here's a breakdown:
* Passive transport means that no energy is required from the cell to move the substances across the membrane.
* Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. This happens because of the random motion of molecules, and it continues until the concentration of the substance is equal on both sides of the membrane.
There are different types of passive transport, including:
* Simple diffusion: The movement of a substance across a membrane directly through the phospholipid bilayer.
* Facilitated diffusion: The movement of a substance across a membrane with the help of a membrane protein (like a channel or carrier protein).
* Osmosis: The movement of water across a semipermeable membrane from an area of high water concentration to an area of low water concentration.
Let me know if you'd like to learn more about any of these types of passive transport!
