Passive and Active Transport, Protein Synthesis

Diffusion

The process by which particles move from an area of high concentration to an area of low concentration.

Osmosis

The movement of water from an area of high water concentration to an area of low water concentration.

Filtration

The movement of water and solutes across a membrane due to hydrostatic pressure.

Facilitated Diffusion

The process by which particles move from high to low concentration with the help of membrane proteins.

Semi-Permable Membrane

A barrier that allows certain molecules to pass through but not others.

Passive Transport

Movement of substances across a cell membrane without the use of energy.

Active Transport

The movement of substances across a cell membrane against their concentration gradient, requiring energy.

Hypotonic Solution

A solution in which the concentration of solutes is lower than that inside the cell; water enters the cell.

Hypertonic Solution

A