OCR Biology 'Proteins and Amino acids'

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1. Which three types of bonds help tertiary structures maintain their shape?

  • Covalent peptide bonds and disulphide bonds
  • Ionic bonds, hydrogen bonds and disulphide bonds
  • Ionic bonds, covalent bonds and hydrogen bonds
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Other questions in this quiz

2. A quaternary structure is made up of ________ polypeptide chain

  • More than one
  • One

3. Keratin contains many _______ between polypeptide chains adding strength.

  • Ionic bonds
  • Disulphide bridges
  • Glycosidic bonds

4. How is a peptide bond formed?

  • Two amino acids are joined by a protein chain
  • Two amino acids are joined by a condensation reaction
  • Two amino acids are joined by a hydrolysis reaction

5. What is the formula of the amino group?

  • NH
  • NH-3
  • NH-2
  • NH-4

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