Unity & Diversity

Water

Hydrogen Bonds

Physical & Chemical Properties of Water

Nucleic Acids

DNA & RNA Structure

Basis of Genetic Code

Nucleic Acid Structure & Function

Cell Structure

Cell Theory

Cell Theory: Skills

Microscopes

General Cell Structure

Prokaryotic Cell Structure

Eukaryotic Cell Structure

Functions of Life

Eukaryotic Cell Structure: Comparisons & Atypical Examples

Cell Types & Structures: Skills

Drawing Cells: Skills

Diversity of Organisms

Biological Species Concept

Chromosome Number

Karyograms: Skills

Genomes

Comparing Genome Sizes: Skills

Uses of Genome Sequencing

Evolution & Speciation

Evolution

Evidence of Evolution

Convergent Evolution

Speciation

Conservation of Biodiversity

Biodiversity

Reasons for Extinction

Ecosystem Loss

Loss of Biodiversity

How to Preserve Biodiversity

Form & Function

Carbohydrates & Lipids

Properties of Carbon

Macromolecules

Carbohydrates: Definition, Functions & Examples

Role of Glycoproteins

Lipids

Fatty Acids

Phospholipids

Proteins

Formation of Proteins

The Variety of Proteins

Protein Structure: Effect of pH & Temperature

Membranes & Membrane Transport

Lipid Bilayers

Membrane Proteins

Membrane Transport

Glycolipids & Glycoproteins

The Fluid Mosaic Model: Skills

Organelles & Compartmentalisation

Cell Organelles

Cell Compartmentalisation

Cell Specialisation

Stem Cells

Cell Specialisation

Gas Exchange

Gas Exchange in Organisms

Mammalian Lungs: Adaptations

Mechanism of Ventilation

Measuring Lung Volumes: Skills

Gas Exchange in Plants

Drawing Leaf Structure: Skills

Determining Stomatal Density: Skills

Transport

Blood Vessels

Identify Blood Vessels: Skills

Measuring Pulse Rate: Skills

Coronary Heart Disease: Skills

The Transpiration Stream

Adaptations of Xylem Vessels

Drawing Root & Stem Structure: Skills

Adaptation to Environment

Habitats

Abiotic Factors & Species Distribution

Species Distribution: Skills

Abiotic Factors: Marine & Terrestrial

Biomes

Ecological Niches

Ecological Niches

Methods of Nutrition

Nutrition in Hominidae: Skills

Nutrition: Adaptations of Organisms

Competition Between Species

Interaction & Interdependence

Enzymes & Metabolism

Metabolism: Enzymes & Reactions

Enzyme Action

Enzyme Activity: Skills

Enzyme Reaction Rates: Skills

Activation Energy: Skills

Cell Respiration

Adenosine Triphosphate (ATP)

Cell Respiration

Cell Respiration: Skills

Photosynthesis

The Process of Photosynthesis

Separating Photosynthetic Pigments: Skills

Absorption Spectra

Absorption & Action Spectra: Skills

Limiting Factors of Photosynthesis: Skills

Carbon Dioxide Enrichment Experiments

Neural Signalling

Neurones: Function & Structure

Nerve Impulses

Nerve Impulses: Skills

Synapses

Integration of Body Systems

Integration in Living Organisms

The Nervous System

Reflex Arc & Movement Control

Epinephrine & Melatonin

Control Mechanisms

Defence Against Disease

Pathogens

Barriers to Pathogens: Skin & Mucous Membranes

Blood Clotting

The Immune System

White Blood Cells

Adaptive Immune Response

HIV & AIDS

Antibiotics

Antibiotic Resistance

Zoonoses

Vaccines & Immunity

Evaluating COVID-19 Data: Skills

Populations & Communities

Populations in Ecosystems

Estimating Population Size

Limiting Population Size

Limiting Population Size: Examples

Population Growth Curves: Skills

Populations: Intraspecific Relationships

Community: Interspecific Relationships

Interspecific Competition

Chi-Squared Test: Skills

Transfer of Energy & Matter

Ecosystems as Open Systems

Energy Flow in Ecosystems

Obtaining Carbon Compounds in Ecosystems

Trophic Levels

Pyramids of Energy: Skills

Energy Losses

Primary & Secondary Production

The Carbon Cycle

Nutrient Cycling

Continuity & Change

DNA Replication

DNA Replication

Electrophoresis & PCR

Electrophoresis & PCR: Applications

Protein Synthesis

Transcription in Protein Synthesis

Translation in Protein Synthesis

The Genetic Code

Protein Structure & Mutations

Mutations & Gene Editing

Gene Mutations

Consequences of Gene Mutations

Mutations & Genetic Variation

Cell & Nuclear Division

Cell Division

Nuclear Division

Mitosis

Mitosis: Skills

Meiosis

Water Potential

Osmosis

Osmosis in Cells

Osmosis: Skills

Reproduction

Sexual & Asexual Reproduction

Sexual Reproduction

The Menstrual Cycle

Fertilisation

Plant Reproduction

Pollination

Seed Dispersal & Germination

Inheritance

Genetic Inheritance & Genetic Crossing

Inheritance: Terminology

Inheriting Alleles

Sex Determination

Pedigree Charts

Continuous Variation: Skills

Homeostasis

Homeostasis: Maintaining the Internal Environment

Regulation of Blood Glucose

Thermoregulation

Natural Selection

Natural Selection & Evolution

Selection Pressures

Selection Pressures: Skills

Stability & Change

Stability in Ecosystems

Ecosystem Stability: Skills

Keystone Species

Sustainability in Ecosystems & Agriculture

Eutrophication

The Effects of Pollution

Restoring Ecosystems

Climate Change

Causes of Climate Change

Impact of Climate Change

Carbon Sequestration

Tools

Tool 1: Experimental Techniques

Safety, Ethical & Environmental Issues in Biology

Measuring Variables in Biology

Applying Techniques in Biology

Tool 2: Technology

Applying Technology to Collect Data in Biology

Applying Technology to Process Data in Biology

Tool 3: Mathematics

Applying General Mathematics in Biology

Using Units, Symbols & Numerical Values in Biology

Processing Uncertainties in Biology

Graphing in Biology

Exam boards

• DP IB Biology: HL

Study tools

• DP IB Biology · Exam Questions
• DP IB Biology · Flashcards
• DP IB Biology · Past Papers

Related links

• IB Biology · Revision Notes
• IB Biology · Exam Questions
• IB Biology · Flashcards
• IB Biology · Past Papers