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A1.1 Water Lessons - IB Biology

IB
A1.1 Water

IB Biology Topic A1.1: Water Lessons

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Written by official IB examiners

Lessons for A1.1 Water - IB

This lesson delivers structured, step-by-step lessons that guide students through every part of the IB Biology syllabus for A1.1 Water. 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.

A1.1.1 Water as the medium for life

A1.1.2 Hydrogen bonds as a consequence of the polar covalent bonds within water molecules

A1.1.3 Cohesion of water molecules due to hydrogen bonding and consequences for organisms

A1.1.4 Adhesion of water to materials that are polar or charged and impacts for organisms

A1.1.5 Solvent properties of water as a medium for metabolism and transport

A1.1.6 Physical properties of water and the consequences for animals in aquatic habitats

A1.1.7 Extraplanetary origin of water on Earth and reasons for its retention (HL only)

A1.1.8 Relationship between the search for extraterrestrial life and the presence of water (HL only)

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