Osmosis/Membrane Transport Flashcards
0
Q
If the water potential is HIGH, solute concentration is _____
A
LOW
1
Q
What is osmosis?
A
Diffusion of water across a cell membrane?
2
Q
If water potential is LOW, solute concentration is _______
A
HIGH
3
Q
What is the function of aquaporins?
A
They diffuse water through the cell membrane.
4
Q
With diffusion, molecules move by their natural ________ NRG
A
Kinetic
5
Q
________ diffusion requires no NRG to move things across the cell membrane.
A
SIMPLE
6
Q
Why is diffusion considered a passive process?
A
It requires no NRG
7
Q
3 substances that pass easily through the cell membrane?
A
O2 H2O CO2
8
Q
Describe simple diffusion.
A
- Doesn’t require NRG.
* Moves high to low concentration
9
Q
Describe facilitated diffusion.
A
- Doesn’t req. NRG
* Uses transport proteins to move high to low
