9700/21/M/J/23 · Biology May/June 2023 Paper 21
6 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 11 marks · Plant and animal cells, Organelles, Diffusion, osmosis and active transport, Amino acids and protein structure, Phagocytes and antigens
- Question 2 · 9 marks · Starch, glycogen and cellulose
- Question 3 · 10 marks · Fluid mosaic model, Diffusion, osmosis and active transport, Phagocytes and antigens, Immune responses
- Question 4 · 13 marks · Genes and the genetic code, DNA replication, The cell cycle, Stages of mitosis
- Question 5 · 11 marks · Blood cells, Arteries, veins and capillaries, Oxygen dissociation curve, Carbon dioxide transport
- Question 6 · 6 marks · Water from soil to xylem, Transpiration
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.