Biology 9700 (Cambridge International AS & A Level)
Original practice questions with long-form, step-by-step worked solutions, organised by the 9700 syllabus strands. Everything here is free to read.
- Subject code
- 9700
- Tier
- AS & A2
- Topics
- 15
- Worked questions
- 150
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Official Cambridge references: 9700 syllabus ↗ · past papers ↗
Cells and biological molecules
Cell Structure
Use light and electron microscopes, calculate magnification and actual size, and distinguish resolution from magnification; recognise the organelles of…
Biological Molecules
Carry out biochemical tests for carbohydrates, proteins and lipids; relate the structures of monosaccharides, disaccharides and polysaccharides, triglycerides…
Enzymes
Explain enzyme action in terms of the active site, enzyme–substrate complex, activation energy and specificity (lock-and-key and induced-fit models)…
Cell Membranes and Transport
Describe the fluid mosaic model and the roles of phospholipids, cholesterol, proteins and glycoproteins, including cell signalling; explain simple and…
Genetics, inheritance and evolution
The Mitotic Cell Cycle
Describe chromosome structure and the stages of the mitotic cell cycle (interphase, mitosis and cytokinesis); explain the importance of mitosis in producing…
Nucleic Acids and Protein Synthesis
Describe the structure of nucleotides, DNA and RNA, complementary base pairing and semi-conservative replication; explain the universal genetic code and how…
Inheritance
Explain meiosis and how crossing over, independent assortment and random fertilisation generate genetic variation; construct genetic diagrams for monohybrid…
Selection and Evolution
Distinguish continuous from discontinuous variation and their genetic basis; explain natural selection (stabilising, disruptive and directional), the founder…
Genetic Technology
Define recombinant DNA and explain gene transfer using restriction endonucleases, DNA ligase, plasmids, reverse transcriptase, promoters and marker genes…
Internal transport and homeostasis
Transport in Mammals
Describe the mammalian double circulation and relate the structures of arteries, veins and capillaries to their functions; explain the transport of oxygen and…
Homeostasis
Explain homeostasis in terms of receptors, coordination, effectors and negative feedback; describe the structure of the kidney and nephron, ultrafiltration…
Health, disease and immunity
Infectious Disease
Name the pathogens that cause cholera, malaria, tuberculosis and HIV/AIDS and explain how each is transmitted and controlled, considering biological, social…
Immunity
Describe phagocytosis and the roles of macrophages, B-lymphocytes and T-lymphocytes in the primary and secondary immune responses, including memory cells…
Energy and metabolism
Energy and Respiration
Explain the need for energy and the features that make ATP the universal energy currency; describe the four stages of aerobic respiration (glycolysis, the…
Photosynthesis
Relate chloroplast structure to function and describe the light-dependent stage, including cyclic and non-cyclic photophosphorylation, photolysis and…