Transport and Colligative Properties Flashcards
What is a colligative property?
a property that depends on number of solute rather than type
What are the colligative properties?
Vapor-Pressure depression, Boiling Point elevation, Freezing point depression, osmotic pressure
What effects all colligative properties?
Adding more solute
What is diffusion?
tendency for gases and liquids to occupy volume
Solutes will always diffuse in which direction?
high to low. Down it’s concentration gradient
When is there no net movement during diffusion?
when solute is evenly distributed
What is osmosis?
diffusion in which solvent diffuses rather than solute
What is hypertonic?
Environment has more solute than cell. May cause cell to shrink
What is hypotonic?
Environment has less solute than cell. May cause cell to lyse
What is Osmotic Pressrue?
Pressure it would take to stop osmosis from occurring
What is facilitated diffusion?
movement of solute across a membrane down a gradient when membrane is impermeable to solute. Uses Channel or carrier protein
What are two types of passive transport?
Simple diffusion and Facilitated diffusion
What are uniport carriers?
transport one molecule across membrane at a time
What are symport carriers?
two substances in the same direction
What are antiport carriers?
two substances, different direction
