Anaerobic Respiration - Practical Skills Flashcards
1
Q
State the products of anaerobic respiration in yeast
A
- Carbon dioxide
- Ethanol
2
Q
How is the rate of anaerobic respiration measured?
A
By counting the number of carbon dioxide produced in a minute
3
Q
Why is a layer of oil placed on top of the yeast suspension?
A
To prevent air from entering the suspension
4
Q
How is temperature controlled?
A
Using a thermostatically controlled water bath
5
Q
State a source of error in this practical
A
The formation of carbon dioxide bubbles may be too rapid to be accurately counted
6
Q
State the controlled variables of this practical
A
- Volume and concentration of sugar solution
- Mass of yeast
- Time for counting bubbles
