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Semi- permeable membranes
Diffusion
Types of "tonics"
Concentration
Mixed
100
Allowing liquids or gasses to pass through it.
What is the definition of permeable?
100
Going from an area of high concentration, to an area of low concentration.
What is the definition of diffusion?
100
Higher concentration outside of the cell than inside.
What is hyper-tonic?
100
When a lot of molecules are packed close together,
What is high concentration?
100
Drinking too much water
What is the cause of a hypo-tonic cell?
200
The protective "skin" around the cell
What is a membrane?
200
Passive diffusion
What type of diffusion doesn't need energy?
200
More molecules inside the cell than outside.
What is hypo-tonic?
200
Particles moving through a solution or a gas to an area of high concentration to a are of low concentration.
What is concentration gradient?
300
No substances can pass through it.
What is an impermeable membrane?
300
Movement of water, in a semi-permeable membrane.
What is Osmosis?
300
The cell has reached equilibrium.
What is iso-tonic
300
Everything evenly diffused
What is equilibrium?
400
Blood
What type of liquid does the cells "live" in?
400
Osmosis is the movement of water, diffusion is the movement of solutes.
What is the difference between diffusion and osmosis?
400
The cell will get smeller, and shrivel up
What happens to a hyper-tonic cell?
500
Liquids, and gasses.
What can pass through a semi-permeable membrane?
500
Molecules move down the concentration gradient from high to low.
What is the direction molecules move in diffusion?
500
Too much water inside the cell, it will eventually burst.
What is an animal cells reaction to being in a hypo-tonic environment?