Browse syllabus-aligned notes for A2.3 Viruses. Open each subtopic for focused explanations, examples, and summaries.
Browse summary cheatsheets for A2.3 Viruses (HL)
A2.3.1 Structural features common to viruses (HL)
6 minute read
A2.3.2 Diversity of structure in viruses (HL)
8 minute read
A2.3.3 Lytic cycle of a virus (HL)
A2.3.4 Lysogenic cycle of a virus (HL)
A2.3.5 Evidence for several origins of viruses from other organisms (HL)
5 minute read
A2.3.6 Rapid evolution in viruses (HL)
11 minute read
A - Unity and Diversity
A1.1 Water
A1.2 Nucleic acids
A2.1 Origins of cells (HL)
A2.2 Cell structure
A2.3 Viruses (HL)
A3.1 Diversity of organisms
A3.2 Classification and cladistics (HL)
A4.1 Evolution and speciation
A4.2 Conservation of biodiversity
B - Form and Function
C - Interaction and Interdependence
D - Continuity and Change