The digestive system (AQA GCSE Biology): Flashcards
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Practise the cards
14 cards from this deck
Definition of enzyme
Definition of enzyme
A biological catalyst (protein) that speeds up chemical reactions
Role of digestive enzymes
Role of digestive enzymes
Break down large food into smaller, soluble molecules
Carbohydrase breaks down...
Carbohydrase breaks down...
Carbohydrates → simple sugars
Protease breaks down...
Protease breaks down...
Proteins → amino acids
Lipase breaks down...
Lipase breaks down...
Lipids → fatty acids + glycerol
Example of carbohydrase enzyme
Example of carbohydrase enzyme
Amylase
Where amylase is made
Where amylase is made
Salivary glands, pancreas, small intestine
Where protease is made
Where protease is made
Stomach, pancreas, small intestine
Where lipase is made
Where lipase is made
Pancreas and small intestine
What liver produces
What liver produces
Bile (helps break down fats, not an enzyme)
Enzymes from pancreas
Enzymes from pancreas
Amylase, protease, lipase
4 levels of organisation
4 levels of organisation
Cell, tissue, organ, organ system
Why we need digestive enzymes
Why we need digestive enzymes
Food molecules too big to be absorbed directly into bloodstream
Where digestion is completed
Where digestion is completed
Small intestine