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Biology A · OCR H420 · Biological Diversity · June 2023

OCR A Level Biology A Biological Diversity June 2023 mark scheme H420/02

2h 15m 100 marks

Practise the past exam questions by topic

Cell differentiation7 Qs Dihybrid crosses, linkage & epistasis6 Qs Microscopy13 Qs Control of gene expression6 Qs +12 more
21 questions
  1. Q1 - 1 mark
  2. Q2 - 1 mark - Cell differentiation
  3. Q3 - 1 mark
  4. Q4 - 1 mark - Dihybrid crosses, linkage and epistasis
  5. Q5 - 1 mark - Microscopy
  6. Q6 - 1 mark - Microscopy
  7. Q7 - 1 mark - The control of gene expression
  8. Q8 - 1 mark
  9. Q9 - 1 mark - Culturing microorganisms
  10. Q10 - 1 mark - Carbohydrates
  11. Q11 - 1 mark - Carbohydrates
  12. Q12 - 1 mark
  13. Q13 - 1 mark
  14. Q14 - 1 mark - Classification
  15. Q15 - 1 mark - Enzymes
  16. Q16 - 13 marks - Cloning mammals, Eukaryotic and prokaryotic cells, Micropropagation, Variation
  17. Q17 - 17 marks - Factors affecting enzyme activity
  18. Q18 - 10 marks - Food tests
  19. Q19 - 16 marks - The specific immune response
  20. Q20 - 16 marks - Maintaining biodiversity
  21. Q21 - 13 marks - Carbohydrates