Digestion

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  • Created by: Sophrowe
  • Created on: 30-03-15 14:54

1. What is the pH of bile? Why is this good for the enzymes?

  • Alkaline- neutralises acid to make the conditions right for enzymes
  • Acid- gives enzyme a greater surface area to work on
  • Acid- helps to contribute to the low pH in the stomach
  • Alkaline- helps the mouth chew more food
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2. Why does the small intestine have a large surface area?

  • Its lining is unfolded and it contains enzymes
  • Its lining is folded and it contains villi which contain microvilli
  • Its lining is folded and it contains enzymes
  • Its lining is unfolded and it contains villi which contain microvilli

3. What enzyme breaks down carbohyrates?

  • Amylase
  • Proteases
  • Carbohydrases
  • Lipases

4. What are the benefits of a good blood supply in the small intestine?

  • Less bile is released
  • Food can be digested quicker
  • It allows good absorption of digested food into the blood.
  • Less water is lost

5. Where is bile stored?

  • In the pancreas
  • In the liver
  • In the gall bladder
  • In the small intestine
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