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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

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

C1.1 Enzymes and metabolism

C1.2 Cell respiration

C1.3 Photosynthesis

C2.1 Chemical signalling (HL)

C2.2 Neural signalling

C3.1 Integration of body systems

C3.2 Defense against disease

C4.1 Populations and communities

C4.2 Transfer of energy and matter

D1.1 DNA replication

D1.2 Protein synthesis

D1.3 Mutations 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 Sustainability and change

D4.3 Climate change

IB Biology Topic A2.2: Cell Structure Lessons

Written by IB Experts

This lesson delivers structured, step-by-step lessons that guide students through every part of the IB Biology syllabus for A2.2 Cell structure. These lessons simplify complex ideas like molecular biology, evolutionary mechanisms, and homeostasis, while worked examples show how to approach IB-style questions.

Designed for both HL and SL learners, RevisionDojo lessons ensure students not only understand the theory but also know how to apply it in IB Paper exam situations.

With clear explanations, active learning checks, and a syllabus-first design, RevisionDojo makes revision less overwhelming and more effective.

A2.2.1 Cells as the basic structural unit of all living organisms

A2.2.2 Microscopy skills

A2.2.3 Developments in microscopy

A2.2.4 Structures common to cells in all living organisms

A2.2.5 Prokaryote cell structure

A2.2.6 Eukaryote cell structure

A2.2.7 Processes of life in unicellular organisms

A2.2.8 Differences in eukaryotic cell structure between animals, fungi, and plants

A2.2.9 Atypical cell structure in eukaryotes

A2.2.10 Cell types and cell structures viewed in light and electron micrographs

A2.2.11 Drawing and annotation based on electron micrographs

A2.2.12 Origin of eukaryotic cells by endosymbiosis (HL)

A2.2.13 Cell differentiation (HL)

A2.2.14 Evolution of multicellularity (HL)

Written by IB Experts

This lesson delivers structured, step-by-step lessons that guide students through every part of the IB Biology syllabus for A2.2 Cell structure. These lessons simplify complex ideas like molecular biology, evolutionary mechanisms, and homeostasis, while worked examples show how to approach IB-style questions.

Designed for both HL and SL learners, RevisionDojo lessons ensure students not only understand the theory but also know how to apply it in IB Paper exam situations.

With clear explanations, active learning checks, and a syllabus-first design, RevisionDojo makes revision less overwhelming and more effective.

A2.2.1 Cells as the basic structural unit of all living organisms

A2.2.2 Microscopy skills

A2.2.3 Developments in microscopy

A2.2.4 Structures common to cells in all living organisms

A2.2.5 Prokaryote cell structure

A2.2.6 Eukaryote cell structure

A2.2.7 Processes of life in unicellular organisms

A2.2.8 Differences in eukaryotic cell structure between animals, fungi, and plants

A2.2.9 Atypical cell structure in eukaryotes

A2.2.10 Cell types and cell structures viewed in light and electron micrographs

A2.2.11 Drawing and annotation based on electron micrographs

A2.2.12 Origin of eukaryotic cells by endosymbiosis (HL)

A2.2.13 Cell differentiation (HL)

A2.2.14 Evolution of multicellularity (HL)

IB Biology Topic A2.2: Cell Structure Lessons

A - Unity and Diversity

B - Form and Function

C - Interaction and Interdependence

D - Continuity and Change

A - Unity and Diversity

B - Form and Function

C - Interaction and Interdependence

D - Continuity and Change

IB Biology Topic A2.2: Cell Structure Lessons

Lessons for A2.2 Cell structure - IB

Lessons for A2.2 Cell structure - IB

IB Biology Topic A2.2: Cell Structure Lessons