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Food production: exam questions

4 questions, 12 marks. Write your answers on paper, then open each mark scheme.

Spec 4.7.5
Triple only (what this means)Triple only: only in Triple Biology. Combined Science students can skip it. What the labels mean
Questions and mark scheme (PDF)3 pages

Question 1

Triple only (what this means)Triple only: only in Triple Biology. Combined Science students can skip it. What the labels mean

(a) What is meant by food security? (1) (b) Give one biological factor that threatens food security. (1)

[2 marks]
Show mark scheme for question 1
  • (a) having enough food to feed a population (1)
  • (b) any one from: increasing birth rate / changing diets in developed countries / new pests and pathogens / environmental change such as failure of rains / cost of agricultural inputs / conflict affecting availability of water or food (1)

Question 2

Triple only (what this means)Triple only: only in Triple Biology. Combined Science students can skip it. What the labels mean

Some farmers keep food animals in small pens at a controlled temperature. Explain how this increases the efficiency of food production.

[3 marks]
Show mark scheme for question 2
  • animals move less, so less energy is transferred to the surroundings / less glucose used in respiration for movement (1)
  • warm surroundings, so less energy is used to keep warm / less heat lost (1)
  • so more of the energy / biomass from food is used for growth (1)

Question 3

Triple only (what this means)Triple only: only in Triple Biology. Combined Science students can skip it. What the labels mean

Explain how control of net size and fishing quotas help to conserve fish stocks.

[3 marks]
Show mark scheme for question 3
  • larger mesh lets small / young fish escape (1)
  • they grow and breed (1)
  • quotas limit the amount caught so enough fish are left to breed (1)

Question 4

Triple only (what this means)Triple only: only in Triple Biology. Combined Science students can skip it. What the labels mean

(a) Describe how the protein-rich food mycoprotein is produced. (3) (b) Name the substance made by a genetically modified bacterium that is used to treat diabetes. (1)

[4 marks]
Show mark scheme for question 4
  • (a) the fungus Fusarium is used (1)
  • grown on glucose syrup (1)
  • in aerobic conditions (1)
  • the biomass is harvested and purified (1)
  • Max 3 for (a)
  • (b) human insulin (1) allow insulin
Stuck on one?Read the notesFlashcards