Digestion 2.5 / 5 based on 2 ratings ? BiologyBiological molecules, organic chemistry and biochemistryASAQA Created by: Blackcurrant.Created on: 12-12-12 18:35 What is the digestive system also known as? Alimentary Canal 1 of 23 Define Digestion. The break down of large, insoluble molecules into small, soluble molecules 2 of 23 What are the two types of digestion? Mechanical and chemical 3 of 23 Where does mechanical digestion take place? In the mouth 4 of 23 What is the mouth also known as? The buccal cavity 5 of 23 What is meant by mastification? Chewing 6 of 23 Why does mastification occur? To increase the surface area of the food to increase the rate of enzyme activity during chemical digestion 7 of 23 What is a bolus? A ball of food mixed with saliva 8 of 23 What is meant by peristalsis? Muscle contraction to force food along the alimentary canal 9 of 23 What is meant by chemical digestion? Using enzymes to hydrolyse large insoluble molecules into smaller soluble molecules 10 of 23 What type of bond do carbohydrases break? Glycosidic 11 of 23 What type of bond do proteases break? Peptide 12 of 23 What type of bond do lipases break? Ester 13 of 23 What enzyme digests starch? Amylase 14 of 23 Where is amylase produced? In the salivary gland and the pancreas 15 of 23 What does amylase digest starch into? Maltose 16 of 23 What happens to salivary amylase in the stomach? It is denatured 17 of 23 What happens in the stomach? Pepsin digests proteins into amino acids, optimum pH2 18 of 23 What happens in the duodenum? Mostly digestion - epithelial cells secrete maltase, lactase and sucrase to break down disaccharides 19 of 23 What happens in the ileum? Products of digestion are absorbed by diffusion, facilitated diffusion and active transport 20 of 23 What are the two parts of the large intestine called? The colon and the rectum 21 of 23 What happens in the colon? Reabsorption of water by osmosis 22 of 23 What happens in the rectum? Faeces is stored 23 of 23
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