Biology 2.1.5 Osmosis and water potential

Question	Answer
Define osmosis	The movement of water molecules across a partially permeable membrane down the water potential gradient, from an area of higher water potential to an area of lower water potential
Across what membrane does osmosis occur?	Partially permeable
What is the water potential of pure water?	0
Define water potential Image: Water Potential (binary/octet-stream)	The tendency for water to leave a solution
What happens to the water potential when a solute is added to a solution?	The water potential decreases
Are values of water potential always positive or negative?	Negative
What is an isotonic solution?	When the two solutions have the same concentration
What happens to a cell in a isotonic solution?	Nothing
What is a hypotonic solution?	Where the concentration of the solution is less than that of the cell in it
What is a hypertonic solution?	A hypertonic solution has a greater concentration of solutes than the cell in it

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	Created by Sam Gunnell over 5 years ago