RP3 - Dilution series Flashcards
1
Q
Why could potato skin affect osmosis?
A
Skin is impermeable to water
2
Q
Why were potatoes of the same variety?
A
Cells have same water potential so no genetic differences
3
Q
Why must potato cylinders all be the same length?
A
Same surface area otherwise affects rate of uptake
4
Q
How to obtain results in a graph?
A
- Make sure all surfaces are exposed to sucrose solution
- Make sure temperature is controlled using water bath
- Blot potato dry with paper towel
- Mauser mass of cubes at stated timed intervals
