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biology

digestive system and enzymes

TermDefinition
digestion is the breakdown of large insoluble food molucules into smaller soluble food molecules
2 types of digestion phsical= food broken down by your teeth chemical= food broken down by special chemicals called enzymes
enzymes are found in every cell in the body. function; to speed up chemical reactions enzymes are biological catalyts an example; amylase
amylase found in saliva nd small intestine its breaks down starch into smaller units called maltose
substrate substance on which an enzyme acts is called a substrate
product substance formed as a result of the reaction is called the product
stages in nutrition 1)eating; food taken into mouth 2)digestion; food brokendown into small molecules 3) absorption; digested food taken to bloodstream nd carried to cells 4) getting rid of undigested waste as faeces
digestive systme consists of mouth, oesophagus, stomach, small intestine, large intestine
mouth (function) phsical digestion by teeth chemical digestion by enzymes
oesophagus carries food from mouth to stomach
stomach food is mixed with digestive enzymes and churned
liver produces bile
pancreas produces digestive enzymes
small intestine completes digestion digested food absorbed into bloodstream
large intestine takes water back into bloodstream
teeth why? we need to crush our food to make food smaller
types teeth incisor, canine, premolar, molar
incisors cutting and biting food
canine tearing food
pre molar and molar crushing and grinding our food
Created by: leahmullins
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