Twenty past-paper questions on the cell cycle, mitosis, meiosis, specialised cells, tissues and stem cells, from easy to hard, each with its mark scheme and advice from the examiners' reports.

Eighteen past-paper questions on membrane roles, the fluid mosaic model, permeability, diffusion, active transport, exocytosis and osmosis, from easy to hard, each with its mark scheme and advice from the examiners' reports.

Eighteen past-paper questions on enzyme action, intracellular and extracellular enzymes, cofactors, inhibitors, rate graphs and Q10, from easy to hard, each with its mark scheme and advice from the examiners' reports.

Seventeen past-paper questions on nucleotides, ATP, DNA structure and replication, the genetic code, protein synthesis and DNA purification, from easy to hard, each with its mark scheme and advice from the examiners' reports.

Seventeen past-paper questions on organelles, protein secretion, the cytoskeleton, prokaryotes, microscopes, staining and magnification, from easy to hard, each with its mark scheme and advice from the examiners' reports.