OCR Biology 'Proteins and Amino acids'

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

  • Ionic bonds, hydrogen bonds and disulphide bonds
  • Ionic bonds, covalent bonds and hydrogen bonds
  • Covalent peptide bonds and disulphide bonds
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2. Is the amino group acidic or basic?

  • Acidic
  • Basic

3. Which type of bond holds the beta pleated sheet together?

  • Hydrogen bonds
  • Covalent bonds
  • Disulphide bonds
  • Ionic bonds

4. What bond is formed when amino acids join together by condensation?

  • A covalent peptide bond
  • An ionic peptide bond
  • A disulphide bond
  • A glycosidic bond

5. What is a polypeptide?

  • A multiple peptide bond
  • A larger structure consisting of multiple amino acids
  • A bond between two amino acids

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