3.2 - 2016 June Q5*
Visking tubing can be used to represent the small intestine.
The diagram shows apparatus used to investigate the digestion of starch in the small intestine. The apparatus is set up and left at a temperature of 40 °C for 30 minutes.
The diagram shows apparatus used to investigate the digestion of starch in the small intestine. The apparatus is set up and left at a temperature of 40 °C for 30 minutes.
(a) Explain the changes that occur in the apparatus during the investigation. (4)
(b) Explain why repeating the experiment at 70 °C will give different results. (3)
(c) Explain what effect changing the concentration of the starch solution and the size of the visking tubing would have on the experiment. (4)
(d) Name a location in the digestive system where the enzyme used in this investigation is produced. (1)
(b) Explain why repeating the experiment at 70 °C will give different results. (3)
(c) Explain what effect changing the concentration of the starch solution and the size of the visking tubing would have on the experiment. (4)
(d) Name a location in the digestive system where the enzyme used in this investigation is produced. (1)