2d - diffusion + osmosis Flashcards
1
Q
What is osmosis?
A
The diffusion of water from a high concentrated area to a low concentrated area through a partially permeable membrane
2
Q
What are the factors that affect the rate of diffusion?
A
- surface area to volume ratio
- concentration gradient
- temperature
- distance
3
Q
Does diffusion occur fastest over a large surface area or a small surface area?
A
Large surface area
4
Q
How does the concentration gradient affect the rate of diffusion?
A
The larger the concentration gradient the quicker diffusion occurs
5
Q
What is the compensation rate?
A
The point at which the rate of photosynthesis equals the rate of respiration
6
Q
What is an example of a partially permeable membrane?
A
A cell membrane
7
Q
Why is there a steady net flow during osmosis?
A
Because there are more molecules on one side than the other, so the solution becomes more dilute.
