VCE Biology Practice Platform

VCAA Study Design 2022-2027 | Units 1-4

Unit 4: How does life change and respond to challenges?

Immunity, infectious disease, and changes in biodiversity over time
25% SAC + 50% Exam 40 Skills • 3 Levels Each

Unit 4 Skill Map

Immunity, disease, vaccination, evolution, and changes in biodiversity over time — the ATAR-scored unit with the highest exam weighting.

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MCQ Multiple Choice
DIAG Diagram
APPLY Application

AoS 1: Responding to Antigens

15 skills

Pathogens and Disease

3 skills ▼
Pathogen Types and CharacteristicsMCQ24125 Disease Transmission and PreventionMCQ24126 Immune System OverviewDIAG24127

Innate (Non-specific) Immunity

3 skills ▼
Physical and Chemical BarriersMCQ24128 Innate Immune Cells (Phagocytes, NK Cells)DIAG24129 Inflammation and Innate ResponseMCQ24130

Adaptive (Specific) Immunity

6 skills ▼
Antigen Recognition and ProcessingDIAG24131 T Lymphocyte FunctionMCQ24132 B Lymphocyte FunctionMCQ24133 Antibody Structure and FunctionDIAG24134 Cell-Mediated ImmunityMCQ24135 Humoral ImmunityMCQ24136

Immunity and Disease Prevention

3 skills ▼
Immunological MemoryMCQ24137 Vaccination and ImmunisationAPPLY24138 Immune System DisordersMCQ24139

AoS 2: Disease Challenges and Strategies

10 skills

Specific Disease Challenges

5 skills ▼
HIV/AIDS and Immune DeficiencyAPPLY24140 Autoimmune DiseaseMCQ24141 Allergic ResponsesMCQ24142 Transplant ImmunologyMCQ24143 Cancer and the Immune SystemAPPLY24144

Global Health and Strategies

5 skills ▼
Antimicrobial ResistanceAPPLY24145 Emerging Infectious DiseasesMCQ24146 Immune System and AgingMCQ24147 Therapeutic InterventionsAPPLY24148 Global Health and ImmunityAPPLY24149

AoS 3: Changes in Biodiversity Over Time

20 skills

Evidence and Mechanisms

5 skills ▼
Evidence for EvolutionMCQ24150 Natural SelectionMCQ24151 Types of SelectionMCQ24152 SpeciationMCQ24153 Genetic DriftMCQ24154

Population Genetics

5 skills ▼
Gene FlowMCQ24155 Mutations and VariationMCQ24156 Allele FrequencyMCQ24157 Hardy-Weinberg EquilibriumAPPLY24158 PhylogeneticsDIAG24159

Comparative Evidence

5 skills ▼
Molecular HomologyMCQ24160 Human EvolutionMCQ24161 Convergent and Divergent EvolutionMCQ24162 CoevolutionMCQ24163 Extinction and BiodiversityMCQ24164

Patterns and Applications

5 skills ▼
BiogeographyMCQ24165 Fossil RecordDIAG24166 Comparative AnatomyDIAG24167 Molecular ClocksAPPLY24168 Selective BreedingAPPLY24169
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