Respiration Experiments - Factors Affecting Respiration (Topic 5A) Flashcards
1
Q
What should be added to a test tube
A
a known volume and concentration of substrate solution
2
Q
What temperature should the water bath be set at
A
one of the temperatures being investigated
3
Q
How long should the test tube be left in the water bath
A
10 minutes
4
Q
After the test tube has been in the water bath, what should be added
A
a known mass of dried yeast, should be stirred in
5
Q
After the yeast has been added, what should be attached
A
a bung with a tube attached to a gas syringe
6
Q
At regular intervals what should be measured
A
Volume of CO2 produced
7
Q
What should always be present to keep the test fair
A
a control test where no yeast is present
8
Q
What extra solution is added for the anaerobic test
A
liquid paraffin to stop oxygen entering
