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IBDP Biology 2025

Practice Questions

1. Unity and Diversity

1.1 Water 1.2 Nucleic Acids 1.3 Origins of Cells (HL only)1.4 Cell Structure 1.5 Viruses (HL only)1.6 Diversity of Organisms 1.7 Classification and Cladistics (HL only)1.8 Evolution and Speciation 1.9 Conservation of Biodiversity

1.1 Water 1.2 Nucleic Acids 1.3 Origins of Cells (HL only)1.4 Cell Structure 1.5 Viruses (HL only)1.6 Diversity of Organisms 1.7 Classification and Cladistics (HL only)1.8 Evolution and Speciation 1.9 Conservation of Biodiversity

2. Form and Function

2.1 Carbohydrates and Lipids 2.2 Proteins 2.3 Membranes and Membrane Transport 2.4 Organelles and Compartmentalization 2.5 Cell Specialization 2.6 Gas Exchange 2.7 Transport 2.8 Muscle and Motility (HL only)2.9 Adaptation to Environment 2.10 Ecological Niches

2.1 Carbohydrates and Lipids 2.2 Proteins 2.3 Membranes and Membrane Transport 2.4 Organelles and Compartmentalization 2.5 Cell Specialization 2.6 Gas Exchange 2.7 Transport 2.8 Muscle and Motility (HL only)2.9 Adaptation to Environment 2.10 Ecological Niches

3. Interaction and Interdependance

3.1 Enzymes and Metabolism 3.2 Cell Respiration 3.3 Photosynthesis 3.4 Chemical Signalling (HL only)3.5 Neural Signalling 3.6 Integration of Body Systems 3.7 Defence Against Disease 3.8 Populations and Communities 3.9 Transfers of Energy and Matter

3.1 Enzymes and Metabolism 3.2 Cell Respiration 3.3 Photosynthesis 3.4 Chemical Signalling (HL only)3.5 Neural Signalling 3.6 Integration of Body Systems 3.7 Defence Against Disease 3.8 Populations and Communities 3.9 Transfers of Energy and Matter

4. Continuity and Change

4.1 DNA Replication 4.2 Protein Synthesis 4.3 Mutation and Gene Editing 4.4 Cell and Nuclear Division 4.5 Gene Expression (HL only)4.6 Water Potential 4.7 Reproduction 4.8 Inheritance 4.9 Homeostasis 4.10 Natural Selection 4.11 Stability and Change 4.12 Climate Change

4.1 DNA Replication 4.2 Protein Synthesis 4.3 Mutation and Gene Editing 4.4 Cell and Nuclear Division 4.5 Gene Expression (HL only)4.6 Water Potential 4.7 Reproduction 4.8 Inheritance 4.9 Homeostasis 4.10 Natural Selection 4.11 Stability and Change 4.12 Climate Change

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