Practicals Flashcards
1
Q
In chromatography why should you draw a line where the solvent reached immediately
A
- the solvent evaporates rapidly
- so the end position is not visible shortly after the experiment
2
Q
What is the purpose of the soda lime?
A
To absorb the carbon dioxide produced in respiration
3
Q
How do you workout the rate of respiration?
A
Volume/(time x mass)
4
Q
Why must both yeast solutions be left in the water bath for five minutes before the reaction?
A
- so the two solutions both equilibrate to the test temperature
5
Q
What is the purpose of the silica beads in the woodlice experiment?
A
Silicon gel absorbs moisture reducing the humidity of the air and creating a dry environment
