Enzymes and Digestion

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  • Created by: Jasmin
  • Created on: 02-11-13 17:14
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  • Enzymes and Digestion
    • Digestion is the process of breaking down food into substances that can be used by the body
    • Chemical composition of food
      • Many molecules in our food are polymers (proteins, carbs)
      • Large, complex molecules composed of long chains of monomers - small, basic molecular units
    • Physical Digestion
      • Food is broken down into smaller pieces by teeth
        • Moves to stomach where it is broken down further by churning movement of stomach muscles
          • Breaking food down into smaller pieces gives it a larger SA - makes chemical digestion faster
    • Chemical Digestion
      • Break down large, insoluble molecules into smaller, soluble ones
        • HYDROLYSIS
          • Splitting up of molecules by adding water to the chemical bonds that hold them together
            • Name of enzyme is hydrolases
              • Food molecules are built up again into large molecules, these molecules are incorporated into body tissues
                • Assimilation: incorporating absorbed molecules into body tissues


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