Rando
Define osmosis
Diffusion (passive movement) of water through a cell membrane
A cell is placed in a hypertonic solution. After 24 hours, you would expect the cell to now be _____ with the solution
Isotonic
Equation for water potential.
Psi = Psi(P) + Psi(S)
What is the value of C in this problem:
A cell is in equilibrium with the surroundings. The surrounding solution's molarity is 0.5M and has a temperature of 12 deg Celsius.
c = 0.5
Name at least 2 of Taylor Swift's cats
Meredith Grey, Olivia Benson, Benjamin Button
If a substance diffusing across the cell membrane reaches equilibrium, do molecules still cross the cell membrane?
Yes, there is no longer a NET movement
When a cell is exporting a protein in mass quantities, what 3 organelles are involved?
Rough ER, Golgi Body, Vesicle
Equation for solute potential
Psi(S)=-iCRT
How do you find Kelvin from Celsius?
add 273 to the measure of Celsius
Taylor Swift's lucky number
13
When is the pressure potential zero?
Pure water in an open beaker
If a cell with a 10% solute concentration is placed in a solution with a 15% solute concentration, what direction will water move?
Out of the cell
i is 1 when ___, while i is 2 when _____.
sugar (glucose, sucrose); salt (NaCl)
Value of R (Universal Constant)
0.08321
ATWTMVTV
All Too Well (Ten Minute Version) (Taylor's Version)
Why drinking chicken broth helps a sore throat
Water goes to the salt... water will leave swollen tissues in the throat (high water potential) and go into the salty chicken broth (low water potential) and reduce swelling in your throat.
A cell is placed in an open container. Both the cell and the solution are at 27 C and contain 1.0 M of solute. The cell contains glucose while the solution contains Sodium Chloride. Which way will the water move?
Out of the cell. WHY?
Addition of solutes will always _____ the water potential.
lower
What is the water potential of a glucose solution with molar composition of .42M at 32 deg Celsius with 2 bars of pressure?
-8.659
"She stole his dog and dyed it key lime green"
The last great american dynasty
True or false: In any solution at atmospheric pressure, ΨS is ALWAYS negative.
True
A cell with a water potential of -5 bars is placed in a solution at -2 bars. Where will the water move? What will happen to the cell?
Water will move INTO the cell, water moves from high to low potential. If the cell is an animal cell it will swell and could burst. If the cell is a plant cell it will swell and become turgid
Psi(S) is equal to ____.
Osmotic/Solute potential
What is the water potential of a glucose solution with molar composition of .42M at 32 deg Celsius in an open container?
-10.659
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