9700/21/M/J/22 · Biology May/June 2022 Paper 21
6 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 9 marks · Gas exchange tissues in micrographs, Functions of the tissues, Oxygen dissociation curve
- Question 2 · 12 marks · Diffusion, osmosis and active transport, Organelles, Monoclonal antibodies, Types of immunity
- Question 3 · 8 marks · How enzymes work, Inhibitors, Factors affecting rate
- Question 4 · 9 marks · Triglycerides, Fluid mosaic model
- Question 5 · 9 marks · Pathogens, Magnification calculations, Prevention and control
- Question 6 · 13 marks · Nucleotides, ATP and RNA, Transcription and translation, Translocation
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.