Osmosis Flashcards
Osmosis involves what
Water molecules
Is is a passive process because it repose on
Kinetic energy
What is water potential
Measure pressure water molecules exert in a solution and their ability to move freely
The more water there is
The higher the water the potential and the more freely the molecules can move
Why units are water potential measured in
Kilopascals (kPa)
The water potential of pure water is said to be
Zero
When dissolved molecules are present this make the water potential
Lower And the value becomes negative
What is the definition of osmosis
Water molecules move form a region o higher (less negative) water potential to a region of lower (more negative) water potential across a partially permeable membrane
The difference in concentration is called
Water potential gradient
We measure osmosis in animal cells by placing them in
Different solutions
If the solution has a higher water potential than the solvent in side the cell we say is a
Hypotonic solution
If the solution has a lower water potential than the solution inside the cell is said to be
Hypertonic solution
If the solution has the same water potential as the solution inside the cell we say it is
Isotonic solution
