Labels:ball | book | bulletin board | hakham | web site OCR: HELT Build a model of the digestive system For this experiment you need a length of visking tubing starch amylase (enzyme) solution distilled water, boiling tube and paper clip 1Tie a knot at one end of the visking tubing and fillit with a fresh starch and enzyme mixture 2Tie the second end of the visking tubing and rinse the tubing with tap water. 3 Now place the tubing into boiling tube of distilled water Use the paper clip to attach the top knot of the tubing to the side of the boiling tube Test the contents of the boiling tube foi starch and for sugar at the start the exper iment. Do the test again after 20 minutes. Add small amount Benedict's salution to sample of the water to test for sugar if it remains blue after heating there is no sugar turns green or orange after heating then th ...
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