DONE Membrane Permeability Flashcards
1
Q
Hypertonic
A
More solute + less H2O
= lose H2O from cells = shrivel + lysis because originally more solute outside cell
2
Q
Osmosis
A
Diffusion of H2O from hypotonic to hypertonic across semi-permeable mem.
3
Q
Osmole
A
Measure of solution’s ability to create osmotic pressure + affect H2O movement
1 mole glucose = 1 osmolar solution
1 mole NaCl = 2
4
Q
Osmolality
A
When conc of solution expressed in osmoles per kg/H2O
5
Q
Hydrophobic molecules
A
O2, CO2, N2, benzene
6
Q
Small, uncharged, polar
A
H2O, urea, glycerol
7
Q
Large, uncharged, polar
A
Glucose, sucrose
8
Q
Ions with higher extracellular conc
A
Na = 145mM -> 12mM Ca = 1.5 mM -> 10 -7 M Cl = 123mM -> 4.2mM
9
Q
Ions with higher intracellular conc
A
K = 155mM -> 4mM
Anions (not Cl) = 167mM -> 40 mM
