Enzymes and Digestion 0.0 / 5 ? BiologyEnzymes and digestionGCSEAQA Created by: kennedylilyCreated on: 11-01-16 11:21 Give three examples of big molecules Starch, molecules and fats 1 of 35 Give four examples of small molecules Sugars, amino acids, glycerol and fatty acids 2 of 35 What do digestive enzymes do to big molecules? They break them down into smaller molecules 3 of 35 Why do digestive enzymes do this? So that the molecules can pass easily through the walls of the digestive system 4 of 35 What does amylase convert? It converts starch into sugars 5 of 35 What does protease convert? It converts proteins into amino acids 6 of 35 What does lipase convert? It converts lipids into glycerol and fatty acids 7 of 35 In which three places is amylase produced? 1. Salivary glands 2. Pancreas 3. Small intestine 8 of 35 In which three places is protease produced? 1. Stomach 2. Pancreas 3. Small intestine 9 of 35 In which two places is lipase produced? 1. Pancreas 2. Small intestine 10 of 35 Where is bile produced? Liver 11 of 35 Where is bile stored? Gall bladder 12 of 35 Where is bile released into? Small intestine 13 of 35 Where does hydrochloric acid work? Stomach 14 of 35 What sort of pH is bile? Alkaline 15 of 35 What does bile do in the small intestine? Neutralises the hydrochloric acid and makes conditions alkaline 16 of 35 Why does bile do this in the small intestine? So that the enzymes can work 17 of 35 What does bile do to fats? Emulsifies them 18 of 35 How does bile make digestion faster? It breaks fat into tiny droplets, so they have a much larger surface area for lipase to work on 19 of 35 Where are enzymes in digestion produced? In glands and in the gut lining 20 of 35 What do the salivary glands produce? Amylase in saliva 21 of 35 What is another name for the gullet? Oesophagus 22 of 35 Which enzyme does the stomach produce? Protease 23 of 35 What is the first reason as to why the stomach produces hydrochloric acid? To kill bacteria 24 of 35 What is the second reason as to why the stomach produces hydrochloric acid? To give the right pH for protease to work 25 of 35 What pH is hydrochloric acid? pH 2 26 of 35 What is produced in the liver? Bile 27 of 35 What does the gall bladder store? Bile 28 of 35 Where is bile released into? Small intestine 29 of 35 What does the pancreas produce? Amylase, protease and lipase 30 of 35 Where are all three enzymes released into? Small intestine 31 of 35 What happens in the large intestine? Excess water is absorbed from food 32 of 35 What is stored in the rectum? Faeces 33 of 35 What does the small intestine produce? Amylase, protease and lipase 34 of 35 What also happens in the small intestine? Digested food is absorbed out of the digestive system into the blood 35 of 35
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