Egestion removes undigested food dietary fibre

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EGESTION : removes undigested food Dietary Fibre: Includes _________ of cell wall & lignin in plants Leftover water is _______________in the gut When rectum is full reflex action of muscle contracts to squeeze faeces out of anus Sphincter at anus prevents defaecation at an inconvenient time Xtra Info: *DIGESTIVE JUICES - contains mucus that helps __________________________ from being digested by its own enzymes - are largely made up of water that: o acts as a ___________________ o __________________________________________ of digestion
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o used in the ____________________ reactions that split up food molecules Add on: Food test + visking tube experiment Describe the use of: – iodine solution to test for starch – Benedict’s solution to test for reducing sugars – biuret test for proteins – ethanol emulsion test for fats and oils – DCPIP test for vitamin C • Explain that different sequences of amino acids give different shapes to protein molecules • Relate the shape and structure of protein molecules to their function, limited to the active site of enzymes and the binding site of antibodies
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