Week 3 Vocab Definitions

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Presentation transcript:

Week 3 Vocab Definitions

Osmosis The passive diffusion of water Active Transport Uses energy (ATP) to move molecules "uphill" against a concentration gradient. Diffusion The passive movement of particles from high to low concentrations

Facilitated Diffusion Passive diffusion of particles through a transport protein from high to low concentration Transport Protein Tube-like opening in the plasma membrane through which particles can diffuse

Equilibrium a state of balance Concentration Gradient The difference in concentration of solutes between two areas

Selectively permeable Describes the cell membrane which only lets some things pass through

Hypotonic The amount of solute in the environment is less than inside the cell; causes cell to swell Hypertonic The amount of solute in the environment is greater than inside the cell; causes the cell to shrink