Required Practical - Decay

AQA Additional Science – Biology

Required Practical

Decay

1.         Half fill one of the 250 cm3 beakers with hot water from the kettle.  This will be the water bath.

2.         Label two test tubes:

•           one ‘lipase’

•           one ‘milk’

3.         In the ‘lipase’ test tube put 5 cm3 of lipase solution.

4.         In the ‘milk’ test tube put five drops of Cresol red solution.

5.         Use a calibrated dropping…