International Baccalaureate Revision Notes

International Baccalaureate (IB) Biology revision notes made for the Standard Level (SL) and Higher Level (HL). This covers all the topics and modules mentioned in the specification/syllabus.

Below we cover all the topics mentioned in the latest syllabus.

General IB Revision Materials:

• AP/IB Lab Format
• Biology: Design Practical
• IB Biology Syllabus Outline
• Summary of Biology Definitions

Standard Level Notes:

Topic 1: Cell Biology Revision Notes:

• 1.1 – Cell Theory
• 1.2 – Prokaryotic Cells
• 1.3 – Eukaryotic Cells
• 1.4 – Membranes
• 1.5 – Cell Division

Topic 2: Molecular Biology Revision Notes:

• 2.1 – Chemical Elements and Water
• 2.2 – Carbohydrates, Lipids and Proteins
• 2.3 – DNA Structure
• 2.4 – DNA Replication
• 2.5 – Transcription and Translation
• 2.6 – Enzymes
• 2.7 – Cell Respiration
• 2.8 – Photosynthesis

Topic 3: Genetics Revision Notes:

• 3.1 – Chromosomes, Genes, Alleles and Mutations
• 3.2 – Meiosis
• 3.3 – Theoretical Genetics
• 3.4 – Genetic Engineering and Biotechnology
• Eye Anatomy (Image)

Topic 4: Ecology Revision Notes:

• 4.1 – Communities and Ecosystems
• 4.2 – The Greenhouse Effect
• 4.3 – Populations
• 4.4 – Evolution
• Energy Flow (Image)
• Pyramid of Energy (Image)

Topic 5: Evolution and Biodiversity Revision Notes:

• 5.1 – Evolution and Biodiversity
• 5.2 – Natural Selection
• 5.3 – Classification of Biodiversity
• 5.4 – Cladistics

Topic 6: Human Physiology Revision Notes:

• 6.1 – Digestion
• 6.2 – The Transport System
• 6.3 – Defence Against Infectious Diseases
• 6.4 – Gas Exchange
• 6.5 – Nerves, Hormones and Homeostasis
• 6.6 – Reproduction

Higher Level Notes:

Topic 7: Nucleic Acids Revision Notes:

• 7.1 – DNA Structure
• 7.2 – DNA Replication
• 7.3 – Transcription
• 7.4 – Translation
• 7.5 – Proteins
• 7.6 – Enzymes

Topic 8: Metabolism, Cell Respiration and Photosynthesis Notes:

• 8.1 – Cell Respiration
• 8.2 – Photosynthesis
• Photosynthesis
• The Calvin Cycle

Topic 9: Plant Biology Notes:

• 9.1 – Plant Structure and Growth
• 9.2 – Transport in Angiospermophytes
• 9.3 – Reproduction in Angiospermophytes
• Plan Diagram of Leaf
• Transportation of Water in Angiospermophytes

Topic 10: Genetics and Evolution Notes:

• 10.1 – Meiosis
• 10.2 – Dihybrid Crosses and Gene Linkage
• 10.3 – Polygenic Inheritance

Topic 11: Animal Physiology Notes:

• 11.1 – Defence Against Infectious Diseases
• 11.2 – Muscles and Movement
• 11.3 – The Kidney
• 11.4 – Reproduction
• The Menstrual Cycle

Options Revision Notes:

• Option D.1 – Origin of Life on Earth
• Option D.2 – Species and Speciation
• Option D.3 – Human Evolution
• Option E.1 – Stimulus and Response
• Option E.2 – Perception of Stimuli
• Option E.3 – Innate and Learned Behaviour
• Option E.4 – Neurotransmitters and Synapses
• Option E.5 – The Human Brain
• Option E.6 – Further Studies of Behaviour
• Option G.1 – Community Ecology
• Option G.2 – Ecosystems and Biomes
• Option G.3 – Impact of Humans on Ecosystems
• Option G.4 – Conservation of Biodiversity
• Option G.5 – Population Ecology