Enzymes - digestion of lipids
Build students' knowledge and understanding of digestive enzymes with this KS3 worksheet which focuses on linking knowledge with observations.
Students are presented with a table of results from a study of the effect of human lipase on the digestion of fats. They then answer a series of questions that encourage them to make observations about the data. Students are also required to plot data and link existing knowledge to their observations.
This is an extract from the worksheet's introduction:
A scientist wanted to study the effect of human lipase on the digestion of fats. He changed the temperature of each test by preheating the solutions of the enzyme and the substrate (fat) using a thermostatically controlled water bath. He added 5 ml of 1% lipase solution to 5 ml of vegetable oil and recorded the pH every minute for 10 minutes using a pH probe. The results are shown below.
