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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 D2.1: Cell and Nuclear Division 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 D2.1 Cell and nuclear division. 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.

D2.1.1 Generation of new cells in living organisms by cell division

D2.1.2 Cytokinesis as splitting of cytoplasm in a parent cell between daughter cells

D2.1.3 Equal and unequal cytokinesis

D2.1.4 Roles of mitosis and meiosis in eukaryotes

D2.1.5 DNA replication as a prerequisite for both mitosis and meiosis

D2.1.6 Condensation and movement of chromosomes as shared features of mitosis and meiosis

D2.1.7 Phases of mitosis

D2.1.8 Identification of phases of mitosis

D2.1.9 Meiosis as a reduction division

D2.1.10 Down syndrome and non-disjunction

D2.1.11 Meiosis as a source of variation

D2.1.12 Cell proliferation for growth, cell replacement and tissue repair (HL)

D2.1.13 Phases of the cell cycle (HL)

D2.1.14 Cell growth during interphase (HL)

D2.1.15 Control of the cell cycle using cyclins (HL)

D2.1.16 Consequences of mutations in genes that control the cell cycle (HL)

D2.1.17 Differences between tumours (HL)

IB Biology Topic D2.1: Cell and Nuclear Division Lessons

A - Unity and Diversity

B - Form and Function

C - Interaction and Interdependence

D - Continuity and Change

IB Biology Topic D2.1: Cell and Nuclear Division Lessons

A - Unity and Diversity

B - Form and Function

C - Interaction and Interdependence

D - Continuity and Change

Lessons for D2.1 Cell and nuclear division - IB

IB Biology Topic D2.1: Cell and Nuclear Division Lessons