2.1 Level of Organisation — Studia

REVISION NOTES

IGCSE Edexcel Biology

2.1 Level of Organisation

2.1.1 Describe the levels of organisation in organisms: organelles, cells, tissues, organs and systems

Flow of organisation levels in organisms:

Specialised cells group together to form tissues
Tissues group together to form organs

Organs group together to form organ systems

1. The Nature & Variety of Living Organisms

1.1 Characteristics of Living Organisms

1.2 Variety of Living Organisms

2. Structure & Function in Living Organisms

2.1 Level of Organisation

2.2 Cell Structure

2.3 Biological Molecules

2.4 Movement of Substances Into and Out of Cells

2.5 Nutrition (in Plants)

2.6 Nutrition (in Human)

2.7 Respiration

2.8 Gas Exchange (in Plants)

2.9 Gas Exchange (in Human)

2.10 Transport (in Plants)

2.11 Transport (in Human)

2.12 Excretion (in Plants)

2.13 Excretion (in Human)

2.14 Coordination and Response (in Plants)

2.15 Coordination and Response (in Human)

3. Reporduction & Inheritance

3.1 Reproduction (in Plants)

3.2 Reproduction (in Human)

3.3 Inheritance

4. Ecology & The Environment

4.1 The Organism in the Environment

4.2 Feeding Relationships

4.3 Cycles within Ecosystems

4.4 Human Influences on the Environment

5. Use of Biological Resources

5.1 Food Production

5.2 Selective Breeding

5.3 Genetic Modification (Genetic Engineering)