Question

1. differentiate between the following types of passive membrane transport: simple diffusion: facilitated: filtration: osmosis:

Explanation:

Simple diffusion is the movement of substances from an area of high - concentration to low - concentration without the help of proteins. Facilitated diffusion uses transport proteins (carrier or channel proteins) to move substances across the membrane, also down the concentration gradient. Filtration is the movement of water and solutes across a membrane due to hydrostatic pressure. Osmosis is the diffusion of water across a semi - permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Answer:

Simple diffusion: Movement of substances down the concentration gradient without protein help.
Facilitated: Movement of substances down the concentration gradient with the aid of transport proteins.
Filtration: Movement due to hydrostatic pressure.
Osmosis: Diffusion of water across a semi - permeable membrane based on solute concentration differences.