biology 2 chapter 3.1


Proteins,catalysts and enzymes 

  • Proteins are made up of long chains of amino acids
  • Proteins have many different functions.
  • Enzymes are proteins which act as biological catalysts.

Factors affecting enzyme action

  • Factors which can alter the shape of the active site prevent the enzyme from working
  • Enzyme activity is affected by temperature and PH 

Enzymes in digestion

  • Digestion enzymes are made by glands in the


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