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Combined science (Higher)
Photosynthesis: requirements and products

Starter quiz

  • Which of these organisms is a producer?
    • human
      human
    • bee
      bee
    • fern
      fern  ✓
    • lamb
      lamb
  • What is the correct word summary for photosynthesis?
    • glucose + oxygen --> water + carbon dioxide
    • glucose + carbon dioxide --> water + oxygen
    • water + carbon dioxide --> glucose + oxygen  ✓
    • water + oxygen --> glucose + carbon dioxide
  • True or false? Producers use all the glucose made during photosynthesis as a fuel for cellular respiration.
    • True
    • False ✓
  • Producers use some of the glucose made by photosynthesis as a source of materials to build biomass. Match each type of biomass to the correct example.
    • carbohydrate
      ⇔
      starch, for storage ✓
    • lipid
      ⇔
      fat, for storage ✓
    • protein
      ⇔
      enzymes, to speed up chemical reactions ✓
  • The glucose made by photosynthesis is made up of carbon, hydrogen and oxygen. This is combined with ______ from mineral ions to make proteins.
    • 'nitrogen' ✓
  • Who is correct?
    • Aisha: Consumers can survive without producers.
      Aisha: Consumers can survive without producers.
    • Alex: Consumers get carbon from the air.
      Alex: Consumers get carbon from the air.
    • Lucas: The only reason producers make biomass is to feed consumers.
      Lucas: The only reason producers make biomass is to feed consumers.
    • Sam: Producers are the source of biomass for food chains.
      Sam: Producers are the source of biomass for food chains.  ✓
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