physiology lab #2

Solute

Molecule
Solvent

Liquid portion
Solution

The result of the solute +solvent= solution
Diffusion
- passive movement of water from high to low concentration
- net movement of molecule
Concentration gradient

the differemce in a concentration across a membrane
Passive transport

movement of molecules across the plasma (cell) membrane that doesn't require energy
Active transport

movement of molecules across the cell membrane that requires energy
Permeabilty

the ease at which molecules pass through the cell membrane
Osmosis

net movement (diffusion) of water from high to low concentration
Osmotic pressure
- amount of pressure required to stop osmosis from occuring
- the more highly concentrated a solution is said to have a greater osmotic pressure

Author

rleighn25

98079

Card Set

physiology lab #2

Description

Diffusion/Osmosis

Updated

2011-08-30T21:42:30Z

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