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1. Write about biochemical adaptations to very cold climates.

  • enzymes spread easier on smaller surface areas
  • contain enzymes with lower optimum temperatures but cells do not freeze as freezing would damage cells
  • The smaller the plant the less energy is needed so more can be spent on specific parts of the plants
  • larger leaves absorb more sunlight
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Other questions in this quiz

2. how do plant fertilisers increase crop yield?

  • they contain potassium
  • fertilisers contain essential minerals
  • fertilisers replace essential elements used by previous crop / provide extra essential elements + used to build plant amino acids
  • fertilisers contain essential nutrients

3. Why is a catalyst used for?

  • gives reduced yield
  • higher rate of reaction
  • speeds reaction
  • high pressure

4. Explain how proteins in the leaves change into nitrates

  • they become nitrates from proteins
  • they shrivel into nitrates
  • leaves decay then ammonia forms nitrifying bacteria converting into ammonia nitrate
  • proteins become acids that become nitrates

5. explain one way animals bodies are adapted to reduce heat loss

  • behavioural adaptations such as migration
  • thick fur insulates by trapping air particles
  • hair traps heat
  • counter current exchange systems such as hooves


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