Osmosis Flashcards
what is osmosis?
The passage of water from a region of higher water potential to lower water potential through a selectively permeable membrane
what is water potential?
the pressure created by water molecules
what is a solute ?
any substance that is dissolved in a solvent
What is water potential?
this is the pressure created by water molecules
what are the standard conditions for water to be zero?
water potential is zero when temp. & pressure (25 degrees C & 100kPa)
what is the highest water potential
its Zero
when solute is added to water what happens to the water potential?
the water potential becomes more negative
what happens if a red blood cell is placed in pure water?
the red blood cell will absorb the water by osmosis because it has a lower water potential
what is haemolysis
when a red blood cell bursts because of high water potential.