Edexcel IGCSE (9-1) Biology: Revision Notes

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Concise revision notes for the Edexcel IGCSE (9-1) Biology course.

1. Characteristics of Living Organisms

Characteristics

2. Variety of Living Organisms

Variety

3. Level of Organisation

Levels of Organisation

4. Cell Structure

Cell Structure & Function

Cell Differentiation (Paper 2)

5. Biological Molecules

Biological Molecules

Enzymes

6. Movement of Substances Into & Out of Cells

Movement Across Membranes

7. Nutrition

Nutrition in Plants

Factors Affecting Photosynthesis

The Leaf

Photosynthesis Practicals

Nutrition in Animals

Energy in Food

The Digestive System

Digestion of Molecules

Bile

Absorption in the Small Intestine

Energy Content of Foods

8. Respiration

ATP

Types of Respiration

Investigating Respiration

9. Gas Exchange

Gas Exchange in Plants (Paper 2)

The Leaf & Gas Exchange (Paper 2)

Effect of Light (Paper 2)

Gas Exchange Practical (Paper 2)

The Thorax

Ventilating the Lungs

The Gas Exchange Surface

Smoking

Investigating Breathing

10. Transport

Methods of Transport

Transport in Flowering Plants

Transpiration (Paper 2)

Factors Affecting Transpiration (Paper 2)

Human Blood

Immunity (Paper 2)

The Heart

Factors Affecting The Heart

Circulation

11. Excretion

Excretion

The Urinary System (Paper 2)

The Nephron: Function (Paper 2)

Making Urine (Paper 2)

12. Coordination & Response

Coordination & Response

Coordination in Plants

Coordination in Humans

Nervous Control in Humans

Reflex Actions

The Eye

Temperature Regulation

Hormones

Hormones: ADH, FSH, LH (Paper 2)

13. Reproduction

Types of Reproduction

Sexual Reproduction in Plants

Germination

Asexual Reproduction in Plants

Reproduction in Humans

The Menstrual Cycle

Role of FSH & LH (Paper 2)

Development of the Embryo

Puberty

14. Inheritance

Genes, Chromosomes & DNA

Nucleic Acids (Paper 2)

Protein Synthesis (Paper 2)

Inheritance & Genetics

Codominance (Paper 2)

Polygenic Inheritance

Monohybrid Inheritance

Inheritance of Sex

Cell Division

Variation

Mutations: Basics

Mutations: Advanced (Paper 2)

Evolution

15. The Organism in the Environment

The Organism in the Environment

Biodiversity (Paper 2)

Population Size

16. Feeding Relationships

Feeding Relationships

Transfer of Energy

17. Cycles within Ecosystems

The Carbon Cycle

The Nitrogen Cycle (Paper 2)

18. Human Influences on the Environment

Air Pollution

The Greenhouse Effect

Water Pollution

Deforestation (Paper 2)

19. Food Production

Climate

Fertiliser & Pests

Yeast in Food Production

Making Yoghurt

Culturing Microorganisms

Fish Farming (Paper 2)

20. Selective Breeding

Selective Breeding

21. Genetic Modification

Genetic Engineering

Genetic Modified Organisms

22. Cloning

Cloning Plants (Paper 2)

Cloning Animals (Paper 2)

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