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It's the fifth question about Visking Tube.
Please don't answer if you are not pretty sure , last time I got a C for B2 and I really need to improve at least a B , to carry on my AS.
ii) The results show that in the small intestine, partially digested carbohydrate will decrease... because the concentration of starch and glucose decreased in the experiment and thats what they represented.
iii) The starch and glucose represents the partially digested carbohydrate inside the gut. The visking tubing is the gut wall. The glucose which is a product of digestion of starch is small enough to penetrate the visking tubing but the starch is a larger molecule and is left behind. Adding amylase from saliva for example to the starch would further digest it and the newly formed glucose would also go through. The outside of the visking represents the blood stream where the glucose goes. These are all very similar to the human body, however, it doesn't take into acount the exact size of the molecules or any catalysts that may speed up the reaction. Also, in some experiments, there may be an anomalous result which may vary the end result. This would not represent a true gut/ stomach.
b) c- stores bile
I hope this helped, the question iii) may need a bit more examples, but i have basically said the obvious ones...
good luck with getting your B