Biology 9700 · AS & A Level · Proteins

Proteins — practice question

Which row correctly describes the bonding present in the primary, secondary, tertiary and quaternary structure of proteins?

  • Aprimary: covalent; secondary: covalent; tertiary: ionic and disulfide only; quaternary: hydrogen and hydrophobic interactions only
  • Bprimary: covalent; secondary: hydrogen; tertiary: hydrogen, ionic, covalent and hydrophobic interactions; quaternary: hydrogen, ionic, covalent and hydrophobic interactions
  • Cprimary: peptide; secondary: covalent; tertiary: hydrogen, ionic, disulfide and hydrophobic interactions; quaternary: hydrogen, ionic and disulfide
  • Dprimary: peptide; secondary: hydrogen; tertiary: ionic and disulfide only; quaternary: ionic and disulfide only

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