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Biology AQA 3.1.3 Cells

evie.daines

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DIGESTION

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BIOLOGY UNIT 1

Mind Map by emilywilliams, updated more than 1 year ago

	Created by emilywilliams over 9 years ago

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DIGESTION

INGESTION: where food is taken into mouth cavity
1. MECHANICAL BREAKDOWN: large pieces are broken down to increase surface area for action of enzymes
  1. PERISTALSIS: movement of food via squeezing of muslces
    1. CHEMICAL BREAKDOWN: enzymes are responsible for breakdown of organic compounds
      1. ABSORPTION: occurs across the small intestine which has a large surface area due to villi
        ELIMINATION: removal of undigested food in the form of faeces
        water and organic compounds
      2. protease, lipase, amylase
    2. oesophegus & small intestine
  2. teeth
  3. churning of stomach
  4. emulsification
2. teeth to grasp, tear or chew food

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