Irish LC Biology
Irish LC Biology
Leaving Certificate Biology explores cells, ecology, genetics, plants, and human body systems. The course covers a wide range of biological concepts from molecular to ecosystem level, with significant emphasis on mandatory practical activities.
Topics
Cell Biology
Cell structure, membrane transport, cell division, enzymes, and respiration.
Ecology
Ecosystems, food webs, nutrient cycles, population dynamics, and human impact.
Genetics & Evolution
Mendelian genetics, DNA, mutations, natural selection, and evidence for evolution.
Plant Biology
Plant structure, photosynthesis, transport, reproduction, and plant responses.
Human Body Systems
Digestive, circulatory, respiratory, nervous, endocrine, and excretory systems.
Study Tips
Mandatory practical activities (MPAs) are always examined — know methods, results, and conclusions. Use precise biological terminology. Diagrams should be large, clear, and fully labelled.
Exam Information
These notes are aligned with the official SEC syllabus and cover Higher and Ordinary Level material. Each topic includes worked examples, common pitfalls, and practice problems to reinforce understanding.
Assessment Structure
The examination commonly consists of a written paper testing knowledge, understanding, and problem-solving across all topics. Coursework or project components may also contribute to the final grade, depending on the subject and level.
How to Use These Notes
- Start with the topic you find most challenging and work through systematically
- Complete all worked examples before moving on — they reinforce key concepts
- Review the Common Pitfalls section in each topic to avoid frequent mistakes
- Use the Summary section as a quick reference for last-minute revision
- Attempt practice problems under timed conditions to build exam confidence