anaerobic respiration Flashcards
1
Q
what are the products of anaerobic respiration in yeast
A
carbon dioxide and ethanol
2
Q
how is the rate of anaerobic respiration is 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 water bath
5
Q
what is a source of error in this practical
A
the formation of CO2 bubbles may be too rapid to be accurately counted
6
Q
what are the controlled variables of this practical
A
- volume and concentration of sugar solution
- mass of yeast
- time for counting bubbles
