What is the chemical nature of enzymes?

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  • All enzymes are proteins but all proteins are not enzymes.Exception non protein enzyme is ribozyme.
  • They are biological catalyst
  • Increases the rate of reaction.
  • Decreases the activation energy.

 

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Enzymes are special proteins that cause reactions to happen in the body without raising the temperature.  they are considered organic catalysts.  since they are proteins, their are made of chains of amino acids which in turn are controlled by sequences of DNA called genes located on chromosomes.  Each enzyme is specific for one reaction.  Each enzyme has a specific active site which binds to a specific substrate (substance in the environment).  If this binding does not occur, the enzyme will not function.  Enzymes can break down large molecules (as in digestion) or they can build up small molecules into larger ones (as in assimilation of body parts from the raw materials).  Since enzymes are proteins, they have a specific 3-D structure. Since they are made of amino acids, each amino acid consists of a central Carbon atom with a hydrogen attached, as well as an amino group and a carboxyl group and one different group called the "R" group.

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