proteins

• What are the monomers from which proteins are made?

  Amino acids
• What does the general structure of an amino acid include?

  Amine group, carboxyl group, and side chain
• How many amino acids are common in all organisms?

  Twenty
• What forms when two amino acids undergo a condensation reaction?

  A peptide bond
• What are dipeptides formed from?

  Condensation of two amino acids
• What may a functional protein contain?

  One or more polypeptides
• What are polypeptides formed from?

  Condensation of many amino acids
• What types of bonds play a role in the structure of proteins?

  Hydrogen bonds, ionic bonds, and disulfide bridges
• What is the relationship between protein structure and function?

  • Primary structure: sequence of amino acids
  • Secondary structure: folding into alpha helices or beta sheets
  • Tertiary structure: overall 3D shape
  • Quaternary structure: assembly of multiple polypeptides
  • Function depends on specific structure
• What is the biuret test used for?

  Testing for proteins
• structure of a protein