B1b - Cell Transport Flashcards
1
Q
Diffusion
A
- The spreading out of the particles resulting in a
- net movement
- from higher concentration to lower
2
Q
Diffusion (movement)
A
High to low
3
Q
Concentration Gradient
A
The difference in concentrations
4
Q
Osmosis
A
- the diffusion of water
- more dilute solution to a more concentrated solution - through a partially permeable membrane
5
Q
Osmosis (movement)
A
dilute to concentrated
6
Q
Active Transport
A
- more concentrated to dilute
- against concentration gradient
- requires energy from respiration
7
Q
Active Transport (movement)
A
Concentrated to dilute
8
Q
Dilute Solution
A
High number of water molecule, low concentration of solute
9
Q
Partially permeable membrane
A
A membrane that allows some substances through but not other
10
Q
Turgor
A
- Pressure created by water in a plant cell
- make the cell hard and rigid
11
Q
Factors which affect the rate of diffusion
A
- Concentration gradient
- Temp.
- Surface Area
12
Q
Isotonic solution
A
When concentration of solutes in a solution outside the cell is the same as inside (no net movement)
13
Q
Concentrated Solution
A
Low number of water molecules, high concentration of solute
14
Q
Solute
A
Dissolved substance
15
Q
Solvent
A
Able to dissolve other substances (dissolver)
