Semipermeable Membrane

A layer that only certain molecules can pass through; they must be small enough

The movement of molecules from an area of higher concentration to an area o flower concentration until equilibrium is reached

Simple diffusion of water; water molecules move though the semipermeable membrane but NOT solute molecules (sugar, salt, etc.)

More solute outside of cell than inside of cell

More solute inside cell than outside cell

Equal amount of water, inside and outside of cell; no net movement

Hypertonic-Animal cell

Water rushed out of cell and shrinks it-CRENATION; does not like this solution

Hypertonic-Plant Cell

Water rushes out of cell and shrinks it/damages cell wall-PLASMOLYSIS; does not like this solution

Does not like this solution, since it wants to hold water; condition is Flaccid

Hypotonic-Animal Cell

Cell expands and bursts called LYSIS, does not like this solution

Prefers this solution, Turgid (normal condition)

Where would water go (into the cell or into the beaker)? (with sucrose solution/distilled water) beaker picture

Water will go into the cell since the distilled water has a higher concentration of water than the sucrose solution

What would happen to the size (or weight) of the cell over time? beaker picture

The cell would increase in size and weight because water enters through osmosis

If this was an animal cell, what word would describe this situation? beaker picture

Lysis, because an animal cell can swell and burst when too much water is inside of it

What about a plant cell? beaker picture

The plant cell would become turgid. It swells when water enters, but the cell wall prevents it from bursting

What (4) factors affect the rate of diffusion?

1. Concentration 2. Temperature 3. Size 4. Time

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Bio Lab Diffusion

Question	Answer
Solute	Substance that is dissolving Example: Iced Tea Mix
Solvent	Liquid the solute dissolves in Example: Water
Solution	Solute dissolved in solvent Example: Iced Tea
Semipermeable Membrane	A layer that only certain molecules can pass through; they must be small enough
Diffusion	The movement of molecules from an area of higher concentration to an area o flower concentration until equilibrium is reached
Osmosis	Simple diffusion of water; water molecules move though the semipermeable membrane but NOT solute molecules (sugar, salt, etc.)
Hypertonic	More solute outside of cell than inside of cell
Hypotonic	More solute inside cell than outside cell
Isotonic	Equal amount of water, inside and outside of cell; no net movement
Hypertonic-Animal cell	Water rushed out of cell and shrinks it-CRENATION; does not like this solution
Hypertonic-Plant Cell	Water rushes out of cell and shrinks it/damages cell wall-PLASMOLYSIS; does not like this solution
Isotonic-Animal Cell	Prefers this solution
Isotonic-Plant Cell	Does not like this solution, since it wants to hold water; condition is Flaccid
Hypotonic-Animal Cell	Cell expands and bursts called LYSIS, does not like this solution
Hypotonic-Plant Cell	Prefers this solution, Turgid (normal condition)
Where would water go (into the cell or into the beaker)? (with sucrose solution/distilled water) beaker picture	Water will go into the cell since the distilled water has a higher concentration of water than the sucrose solution
What would happen to the size (or weight) of the cell over time? beaker picture	The cell would increase in size and weight because water enters through osmosis
If this was an animal cell, what word would describe this situation? beaker picture	Lysis, because an animal cell can swell and burst when too much water is inside of it
What about a plant cell? beaker picture	The plant cell would become turgid. It swells when water enters, but the cell wall prevents it from bursting
What (4) factors affect the rate of diffusion?	1. Concentration 2. Temperature 3. Size 4. Time

Created by: bethanygumpel

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