Leaving Cert Biology Notes

Free Leaving Cert Biology revision notes for Higher Level. Browse 35 topics and read online without an account.

35 topicsHigher LevelUpdated 5 Oct 2026
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Explore the Biology topics

Explore cells, biomolecules, enzymes and genetics, then connect them to body systems, plants, microorganisms and ecology. Illustrated topic notes explain the structures and processes involved.

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Unifying Strand: Nature of Science

1 topic

Strand 1: Organisation of Life

8 topics

Strand 2: Structures and Processes of Life

19 topics
2.1 EnzymesIllustrated explanations.9 min read2.2 PhotosynthesisIllustrated explanations, key terms and self-check questions.18 min read2.2 RespirationIllustrated explanations, key terms and self-check questions.14 min read2.3 Cell Division and CancerIllustrated explanations.4 min read2.3 DNA Replication, Protein Synthesis, and MutationsIllustrated explanations.5 min read2.4 Plant ResponsesIllustrated explanations, key terms and self-check questions.12 min read2.4 The Musculoskeletal SystemIllustrated explanations, key terms and self-check questions.11 min read2.4 The Nervous SystemIllustrated explanations, key terms and self-check questions.14 min read2.4 The Endocrine SystemIllustrated explanations.7 min read2.4 HomeostasisIllustrated explanations.3 min read2.4 ImmunityIllustrated explanations, key terms and self-check questions.15 min read2.5 Reproduction: HumanIllustrated explanations, key terms and self-check questions.17 min read2.5 Reproduction: PlantIllustrated explanations, key terms and self-check questions.11 min read2.6 Transport Across MembranesIllustrated explanations, key terms and self-check questions.10 min read2.6 The Urinary SystemIllustrated explanations, key terms and self-check questions.14 min read2.6 The Digestive SystemIllustrated explanations, key terms and self-check questions.10 min read2.6 The Breathing SystemIllustrated explanations, key terms and self-check questions.8 min read2.6 The Circulatory System and BloodIllustrated explanations, key terms and self-check questions.14 min read2.6 Plant Structure and TransportIllustrated explanations, key terms and self-check questions.16 min read

Strand 3: Interactions of Life

5 topics

Practical work

1 topic

More topics

1 topic

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