9700/21/O/N/22 · Biology October/November 2022 Paper 21
6 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 8 marks · Plant and animal cells, Organelles, Resolution and magnification
- Question 2 · 12 marks · Double circulation, Arteries, veins and capillaries, Amino acids and protein structure, Antibody structure, Types of immunity
- Question 3 · 12 marks · Globular and fibrous proteins, Carbon dioxide transport, DNA structure, Gene mutations
- Question 4 · 8 marks · Viruses, Fluid mosaic model, Vaccination, How enzymes work
- Question 5 · 13 marks · Water from soil to xylem, Plan diagrams, Organelles, Water potential, Factors affecting rate, Pathogens
- Question 6 · 7 marks · Stages of mitosis, The cell cycle
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.