Last Digestion & Absorption Target
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LAST DIGESTION & ABSORPTION TARGET
2. Use dialysis tubing to model absorption of digested food in the intestine.
What is the point of digestion? T-P-S an answer to this question, using carbohydrates as a example.
WWK: Dialysis tubing (aka visking tubing)
a type of semi-permeable membrane tubing used in separation techniques that facilitates the removal or exchange of small molecules from macromolecules in solution based on differential diffusion a form of passive membrane transport
Design a method to use dialysis tubing to model absorption of digested food in the intestine.
In a group of 3, create a diagram of your model.
Materials: • 1% starch solution• 1% amylase
solution• Glassware• Dialysis tubing• Glass
thermometers• Biuret’s solution
• Benedict’s reagent• Vernier temp.
probes• Iodine • Water bath kept at
40*C• Tap water• Hot plates - 3• Distilled water