9700/23/M/J/25 · Biology May/June 2025 Paper 23
6 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 7 marks · Xylem and phloem cells, Xerophytes
- Question 2 · 12 marks · Amino acids and protein structure, Fluid mosaic model, Phagocytes and antigens
- Question 3 · 15 marks · Prokaryotic cells, How enzymes work, Functions of the tissues, Structure of the gas exchange system, Antibiotics
- Question 4 · 8 marks · Fluid mosaic model, Vmax and Km, Factors affecting rate
- Question 5 · 7 marks · Chromosomes and telomeres, Transcription and translation, Genes and the genetic code
- Question 6 · 11 marks · Monoclonal antibodies, Antibody structure, Cardiac cycle
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.