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Macromolecules

Macromolecules. Protein. Proteins. Probably the most diverse group of macromolecules is the proteins. Proteins. Proteins are complex polymers composed of C, H, O and N. Polymer : large molecule formed when many smaller molecules bond together. Proteins.

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Macromolecules

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  1. Macromolecules Protein

  2. Proteins • Probably the most diverse group of macromolecules is the proteins.

  3. Proteins • Proteins are complex polymers composed of C, H, O and N. • Polymer : large molecule formed when many smaller molecules bond together

  4. Proteins • The building blocks of proteins are smaller molecules called amino acids held together by peptide bonds • Most end in “-ine” • Despite the wide variety of life on Earth, all living organisms use only 20 different amino acids to produce the proteins they require

  5. Proteins • Green plants can make all 20 essential amino acids on their own; animals cannot. Thus, animals, including humans, must get some of these essential amino acids from the foods they eat.

  6. Proteins • Enzymes are important proteins found in living things. • An enzyme changes the rate of a chemical reaction. • Enzymes are involved in nearly all metabolic reactions • Usually end in “-ase”

  7. Proteins • Substrate- Component in an enzyme reaction • Enzyme reactions take place in the active site • Substrate + Enzyme Product + Enzyme • The enzyme is unchanged in the reaction.

  8. Proteins • Each enzyme is specific to only one reaction. • This reaction is often compared to a lock and key.

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