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Passive Transport
The use of Brownian movement to move substances across cell membranes. Does not require energy
Brownian movement
Movement from a higher concentration to lower concentration using kinetic energy.
Dialysis
The separation of small and large molecules
Isotonic solution
Equalibrium- 0.9% NaCl
Hypotonic solution
Less than 0.9% NaCl, cell ruptures
Hypertonic solution
Greater than 0.9%NaCl, cell shrinks due to dehydration
4 factors on diffusion
Temperature, 2. Concentration, 3. Molecular size, 4. Viscosity
Active transport
The use of energy to cross a cell membrane. Primary uses energy directly, secondary indirectly uses energy