| Last examinations in May 2024 | |||
|---|---|---|---|
| Standard Level Topics | Higher Level Topics | ||
| Open Access | Open Access | ||
| 1 | Molecular Biology | 7 | Nucleic acids and proteins |
| Subscription needed | Subscription needed | ||
| All Standard Level Topics 1 to 6 | All Higher Level Topics 7 to 11 | ||
| All topics 5 US Dollars | |||
| Coming soon for Examinations starting May 2025 | ||||
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| Theme | Levels of organisation | |||
| Molecules | Cells | Organisms | Ecosystems | |
| A Unity and diversity | Common ancestry has given living organisms many shared features while evolution has resulted in the rich biodiversity of life on Earth. | |||
| 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 |
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| B Form and function | Adaptations are forms that correspond to function. These adaptations persist from generation to generation because they increase the chances of survival. |
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| B1.1 Carbohydrates and lipids B1.2 Proteins | B2.1 Membranes and membrane transport B2.2 Organelles and compartmentalization B2.3 Cell specialization | B3.1 Gas exchange B3.2 Transport B3.3 Muscle and motility [HL] | B4.1 Adaptation to environment B4.2 Ecological niches |
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| C Interaction and interdependence | Systems are based on interactions, interdependence and integration of components. Systems result in emergence of new properties at each level of biological | |||
| C1.1 Enzymes and metabolism C1.2 Cell respiration C1.3 Photosynthesis | C2.1 Chemical signaling C2.2 Neural signaling | C3.1 Integration of body systems C3.2 Defense against disease | C4.1 Populations and communities C4.2 Transfers of energy and matter |
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| D Continuity and change | Living things have mechanisms for maintaining equilibrium and for bringing about transformation. Environmental change is a driver of evolution by natural selection. |
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| D1.1 DNA replication D1.2 Protein synthesis D1.3 Mutation and gene editing | D2.1 Cell and nuclear division D2.2 Gene expression [HL] D2.3 Water potential | D3.1 Reproduction D3.2 Inheritance D3.3 Homeostasis | D4.1 Natural selection D4.2 Stability and change D4.3 Climate change |
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Backround image attributed to Forest & Kim Starr This file is licensed under the Creative CommonsAttribution 3.0 Unported license.