AS Biology 2.1.2 Biological Molecules

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1. Hexose, pentose and triose sugars are normally in what form?

  • Ring/cyclic
  • Straight chains
  • In a helix structure
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2. What is the product of alpha glucose + alpha glucose?

  • Maltose
  • Sucrose
  • Sucrase

3. What is a carbohydrate?

  • A group of molecules containing carbon, hydrogen and oxygen
  • A compound containing glycosidic bonds between carbon atoms
  • A compound made up of more than one carbon atom

4. What is the main function of monosaccharides?

  • To provide a store of energy (i.e. starch)
  • To provide energy (i.e. glucose)
  • To provide cell structure (i.e. cellulose)

5. When two monosaccharides join to make a disaccharide, which type of reaction occurs?

  • A condensation reaction
  • A hydrolysis reaction


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