IB Biology · Unit 1 of 6

IB Biology Unit 1: Unity and diversity

Unit 1 of IB Biology covers Unity and diversity. This unit contains 6 topics and 32 sub-topics. Below you'll find free study notes, flashcards, and exam preparation resources for every topic in this unit.

6 topics32 sub-topics

Exam technique guide

Topics in Unit 1

1.1

Water

5 sub-topics

1.2

Nucleic acids

4 sub-topics

1.4

Cell structure

6 sub-topics

1.6

Diversity of organisms

6 sub-topics

1.8

Evolution and speciation

5 sub-topics

1.9

Conservation of biodiversity

6 sub-topics

Study tip: Work through the topics in order — each builds on concepts from the one before. Start with notes, then reinforce with flashcards and practice questions.

Ready to study Unity and diversity?

Get expert practice questions with instant AI feedback, and a study planner tailored to your IB Biology exam date.

Start studying free

All Biology units Unit 2