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6. What is mainly absorbed in the large intestine?
- digested food
- water
- fibre
7. Where is most digested food absorbed?
- in the gullet
- in the small intestine
- in the stomach
8. What is produced when proteins are digested?
- fatty acids and glycerol
- amino acids
- sugars
9. What does lipase digest?
- proteins
- fats
- carboyhdrates
10. What gives the small intestine a large surface area?
- villi
- lots of loops of intestine
- thin walls
11. When faeces are passed out of the body, this is called:
- egestion
- ingestion
- indigestion
12. Approximately what proportion of deaths in the UK from lung cancer are caused by smoking?
13. What is the addictive substance in tobacco smoke?
- nicotine
- tar
- carbon monoxide
14. One of the main substances in tobacco smoke that causes cancer is:
- carbon dioxide
- tar
- carbon monoxide
15. Which statement about drugs is correct?
- alcohol and tobacco are legal drugs.
- all drugs are medicines.
- most drugs have no effect on the body.
16. How long is the digestive system
17. how long is the small intestine