5046544
Description
Flashcards by francesca graham, updated more than 1 year ago
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Created by francesca graham
over 8 years ago
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| Question | Answer |
| What does starch, proteins and fats all have in common? | They are all big molecules |
| What can't big molecules do? | Pass through the walls of the digestive system |
| What do sugars, amino acids, glycerol and fatty acids all have in common? | They are all smaller molecules |
| What are smaller molecules good at? | Passing through the walls of the digestive system |
| What do digestive enzymes do to bug molecules? | They break them down into smaller molecules |
| What are Amylase, Protease and Lipase? | Digestive enzymes |
| Where is Amylase produced (3 places)? | 1) The salivary glands 2) The pancreas 3) The small intestine |
| What does Amylase digest and what does it turn into? | Amylase converts starch into sugars |
| Where is Protease produces (3 places)? | 1) the stomach 2) the pancreas 3) The small intestine |
| What does Preotease digest and what does it turn into? | Protease converts proteins into amino acids |
| Where is Lipase produced (2 places)? | 1) The pancreas 2) the small intestine |
| What does Lipase digest and whet does it turn into? | Lipase converts lipids (fats and oils) into glycerol and fatty acids |
| What 2 things does bile do? | Neutralises the stomach acid and emulsifies fats |
| Where is bile produced? | In the stomach |
| Where is bile stored? | In the gall bladder |
| Where is bile released? | into the small intestine |
| What conditions do the enzymes in the small intestine work best in? | Alkaline conditions |
| How does emulsifying fats affect it? | It breaks the fat down into little droplets |
| How does emulsifying fats help digestion? | It increases the surface area to help the lipase work which increases the rate of digestion |
| What produce enzymes used in the digestive system? | Specialised cells in elands and the gut lining |
| What does the salivary glands produce? | Anylase (the enzyme in saliva) |
| What enzyme does the stomach produce? | Protease |
| Why does the stomach produce hydrochloric acid (2 reasons)? | 1) To kill bacteria 2) To produce the right pH for protease to work in (pH 2 - acidic) |
| What does the liver produce? | Bile |
| What enzymes does the pancreas produce? | Protease, Amylase and Lipase |
| Where is excess water from food absorbed? | In the large intestine |
| Where is digested food absorbed? | In the small intestine |
| Where is faeces stored? | In the rectum |
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