Topic 1.2

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  • Created by: emx99
  • Created on: 06-01-16 21:19

1. A triglyceride is made up of

  • one glycerol molecule, 3 fatty acid molecules joined to it by ionic bonds
  • one glycerol molecule, 3 fatty acid molecules joined to it by disulfide bonds
  • one glycerol molecule, 3 fatty acid molecules joined to it by ester bonds
  • one glycerol molecule, 3 fatty acid molecules joined to it by hydrogen bonds
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2. The role of starch is to

  • Be a source of energy in animals
  • Break down hydrogen bonds
  • Store energy in all living organisms
  • Be a source of energy to plants

3. What is a saturated fatty acid?

  • One where each carbon atom is joined to the next one in the chain by a triple ionic bond
  • One where each hydrogen atom is joined to the next one in the chain by a single covalent bond
  • One where each carbon atom is joined to the next one in the chain by a single covalent bond
  • One where each carbon atom is joined to the next one in the chain by a double covalent bond

4. Lipids are insoluble in water becuase they

  • Are oddly shaped
  • Are hydrophobic
  • Are hydropholic
  • Contain too many disulfide bonds

5. the three dimensional structure of a protein is held together by

  • hydrogen, ester and ionic bonds
  • peptide, hydrogen and ionic bonds
  • Disulfide bonds, hydrogen and ionic bonds
  • Disulfide bridges and ester bonds
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