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IBDP Biology 2025

Practice Questions
1.1 Water
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1.2 Nucleic Acids
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1.3 Origins of Cells (HL only)
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1.4 Cell Structure
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1.5 Viruses (HL only)
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1.6 Diversity of Organisms
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1.7 Classification and Cladistics (HL only)
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1.8 Evolution and Speciation
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1.9 Conservation of Biodiversity
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2.1 Carbohydrates and Lipids
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2.2 Proteins
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2.3 Membranes and Membrane Transport
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2.4 Organelles and Compartmentalization
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2.5 Cell Specialization
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2.6 Gas Exchange
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2.7 Transport
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2.8 Muscle and Motility (HL only)
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2.9 Adaptation to Environment
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2.10 Ecological Niches
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3.1 Enzymes and Metabolism
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3.2 Cell Respiration
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3.3 Photosynthesis
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3.4 Chemical Signalling (HL only)
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3.5 Neural Signalling
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3.6 Integration of Body Systems
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3.7 Defence Against Disease
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3.8 Populations and Communities
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3.9 Transfers of Energy and Matter
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4.1 DNA Replication
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4.2 Protein Synthesis
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4.3 Mutation and Gene Editing
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4.4 Cell and Nuclear Division
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4.5 Gene Expression (HL only)
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4.6 Water Potential
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4.7 Reproduction
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4.8 Inheritance
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4.9 Homeostasis
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4.10 Natural Selection
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4.11 Stability and Change
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4.12 Climate Change
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