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IGCSE
Biology
Cambridge (CIE)
Revision Notes
Cambridge (CIE) IGCSE Biology Revision Notes
Concise resources for the Cambridge (CIE) IGCSE Biology course.
1. Characteristics & Classification of Living Organisms
Characteristics, Classification & Features of Organisms
Characteristics of Living Organisms
Concept & Uses of Classification Systems
Concept & Uses of Classification Systems Continued
Features of Organisms
Features of Organisms Continued
2. Organisation of the Organism
Cell Structure & Size of Specimens
Cell Structure
Organisation of Cells
Magnification Formula
Converting Between Units
3. Movement into & out of Cells
Diffusion, Osmosis & Active Transport
Diffusion in Biology
Factors that Influence Diffusion
Water
Osmosis
Osmosis Experiments
Osmosis in Animals & Plants
Active Transport
Proteins & Active Transport
4. Biological Molecules
Biological Molecules
Chemicals & Life
Food Tests
DNA Structure
5. Enzymes
Enzymes
Enzymes
Enzyme Investigations
Enzyme Action & Specificity
Enzymes & Temperature
Enzymes & pH
6. Plant Nutrition
Photosynthesis & Leaf Structure
Photosynthesis
Chlorophyll
Use & Storage of Carbohydrates
Minerals in Plants
Investigating the Need for Chlorophyll, Light & Carbon Dioxide
Investigating the Rate of Photosynthesis
Investigating Gas Exchange
Photosynthesis Chemical Equation
Limiting Factors
Leaf Structure
Identifying Leaf Structures in a Dicotyledonous Plant
7. Human Nutrition
Human Diet & Digestion
Diet & Deficiencies
Digestive System
Physical Digestion
Teeth & Digestion
The Stomach
Emulsification of Fats & Oils
Chemical Digestion
Enzymes in Digestion
Hydrochloric Acid
Digestion of Starch
Digestion of Protein
Bile
Absorption
Adaptations of the Small Intestine
8. Transport in Plants
Transport in Plants
Xylem & Phloem
Root Hair Cells
Pathway Taken by Water
Transpiration
Investigating Temperature & Wind Speed
Transpiration Stream
Explaining the Effects of Temperature, Wind Speed & Humidity
Translocation
9. Transport in Animals
Circulatory Systems, Heart & Blood Vessels
Circulatory System
Circulatory System Continued
The Mammalian Heart
Monitoring Activity of the Heart
Investigating Effect of Physical Activity on Heart Rate
Coronary Heart Disease
Identifying Structures in the Heart
Functioning of the Heart
Explaining the Effect of Physical Activity on Heart Rate
Blood Vessels
Circulation Around the Body
Structure & Function of Blood Vessels
Blood Vessels & the Liver
Components of Blood
Blood Clotting
White Blood Cells
Conversion of Fibrinogen
10. Diseases & Immunity
Diseases & Immunity
Pathogens & Barriers
Controlling the Spread of Disease
Active Immunity
Antigens & Antibodies
Vaccination
Preventing the Spread of Disease
Passive Immunity & Breastfeeding
Cholera
11. Gas Exchange in Humans
Gas Exchange in Humans
Features of Gas Exchange Surfaces
The Breathing System
Investigating the Differences in Inspired & Expired Air
Differences in Inspired & Expired Air
Investigating the Effects of Physical Activity on Breathing
Identifying Intercostal Muscles
Function of Cartilage in the Trachea
Volume & Pressure Changes in the Lungs
Differences in Inspired & Expired Air
Explaining the Link Between Physical Activity & Breathing
Protecting the Breathing System
12. Respiration
Respiration
Respiration in Cells
Aerobic Respiration
Anaerobic Respiration
13. Excretion in Humans
Excretion in Humans
Excretion in Humans
The Kidney
The Role of the Liver in Excretion
14. Coordination & Response
Coordination, Response & Homeostasis
Mammalian Nervous System
Types of Neurones
The Reflex Arc
The Synapse
Sense Organs
The Eye
Hormones in Humans
Homeostasis: Definition
Homeostasis
Homeostasis: Temperature Control
Tropisms
15. Drugs
Drugs in Medicine
Drugs in Medicine
16. Reproduction
Reproduction in Plants & Humans
Asexual Reproduction
Sexual Reproduction
Sexual Reproduction in Plants
Sexual Reproduction in Humans
Sexual Hormones in Humans
Sexually Transmitted Infections
17. Inheritance
Inheritance, Genes & Cell Division
Chromosomes, Genes & Proteins
The Inheritance of Sex
Genes & Proteins
Protein Synthesis
Which Proteins are Synthesised?
Mitosis
Meiosis
Monohybrid Inheritance
Codominance & Sex-Linked Characteristics
18. Variation & Selection
Variation & Natural Selection
Variation in Biology
Adaptive Features
Adaptive Features Continued
Natural Selection
Artificial Selection
19. Organisms & Their Environment
Energy & Feeding Relationships
Transfer of Energy
Food Chains & Food Webs
Pyramids of Number & Biomass
Pyramids of Energy
Nutrient Cycles
Populations
20. Human Influences on Ecosystems
Human Impact: Biodiversity, Pollution & Conservation
Ensuring Food Supply
The Importance of Biodiversity
Water Pollution
Other Pollution
Sustainability
Endangered Species
Reasons for Conservation
21. Biotechnology & Genetic Modification
Biotechnology & Genetic Modification
Usefulness of Bacteria
Biotechnology
Genetic Modification
Study tools
Cambridge (CIE) IGCSE Biology · Exam Questions
Cambridge (CIE) IGCSE Biology · Flashcards
Cambridge (CIE) IGCSE Biology · Past Papers
Related links
IGCSE Biology · Revision Notes
IGCSE Biology · Exam Questions
IGCSE Biology · Flashcards
IGCSE Biology · Past Papers