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Last Updated Sep 27, 2025
Biomolecules Simplified Revision Notes for Leaving Cert Biology
Revision notes with simplified explanations to understand Biomolecules quickly and effectively.
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Biomolecules
Living organisms require food:
- For heat and energy
- For growth, maintenance and repair of bodily cells
- To control chemical reactions in cells
Biomolecules
- Biomolecules: organic compounds made in living organisms.
- Macronutrients: needed in large amounts-protein, fats and carbohydrates.
- Micronutrients: needed in small amounts-vitamins and minerals.
- Common elements: Carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur.
- Inorganic compounds: Carbon dioxide & sodium chloride
- Trace elements: Iron, copper & zinc
Exam Focus: Name a trace element.
- Iron
- Copper
- Zinc
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