Topic 1.2

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

1. What is the purpose of phospholipids in the cell surface membrane?

  • They protect the membrane
  • They create the membrane by being arranged in a bilayer with hyrophylic phosphate heads and hydrophiboc lipid tails
  • They let chemicals in and out of the cell
  • They create the membrane by being arranged in a bilayer with hydrophobic phosphate heads and hydrophilic lipid tails
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2. 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

3. The role of starch is to

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

4. What is hydrolysis?

  • A bond between carbon atoms
  • A reaction in which bonds are broken by the removal of a molecule of water
  • A reaction in which bonds are broken by the addition of a molecule of water
  • A reaction in which water is made

5. Dissacharides can be split by

  • Hydrolisis of glycosidic bonds
  • condensation of glycosidic bonds
  • hydrolysis of ester bonds
  • condensation of ester bonds

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