By Revision Genie
Unit 1
Characteristics and Classification of Living Organisms
Characteristics of Living Organisms
Concept and Uses of Classification Systems
Features of Organisms
Unit 2
Organisation of the Organism
Cell Structure
Size of Specimens
Unit 3
Movement into and out of Cells
Diffusion
Osmosis
Active Transport
Unit 4
Biological Molecules
Chemical Elements in Molecules
Large Molecules from Smaller Units
Food Tests
Structure of DNA
Unit 5
Enzymes
Role of Enzymes
Enzyme Action
Factors Affecting Enzyme Activity
Unit 6
Plant Nutrition
Photosynthesis Process
Leaf Structure and Adaptations
Limiting Factors of Photosynthesis
Unit 7
Human Nutrition
Balanced Diet
Digestive System Organs
Physical Digestion
Chemical Digestion
Absorption in Small Intestine
Unit 8
Transport in Plants
Xylem and Phloem Functions
Water Uptake and Pathways
Transpiration Process
Translocation in Plants
Unit 9
Transport in Animals
Circulatory Systems
Structure and Function of the Heart
Blood Vessels
Components of Blood
Unit 10
Diseases and Immunity
Pathogens and Transmission
Body Defences
Active and Passive Immunity
Vaccination
Unit 11
Gas Exchange in Humans
Features of Gas Exchange Surfaces
Breathing System Structure
Inspired and Expired Air Composition
Effects of Physical Activity on Breathing
Unit 12
Respiration
Uses of Energy in Organisms
Aerobic Respiration
Anaerobic Respiration
Unit 13
Excretion in Humans
Excretory Products and Organs
Structure of the Kidney
Role of the Liver in Excretion
Deamination and Urea Formation
Unit 14
Coordination and Response
Nervous System Structure
Reflex Actions
Synapses and Neurotransmitters
Unit 15
Drugs
Effects of Drugs on the Body
Medicinal and Recreational Drugs
Drug Abuse and Health Risks
Unit 16
Reproduction
Asexual and Sexual Reproduction
Reproductive Systems in Humans
Fertilisation and Development
Pollination and Seed Dispersal
Unit 17
Inheritance
DNA and Genes
Monohybrid Inheritance
Variation and Mutation
Unit 18
Variation and Selection
Types of Variation
Natural Selection
Selective Breeding
Unit 19
Organisms and Their Environment
Ecosystems and Food Chains
Energy Flow in Ecosystems
Nutrient Cycles
Unit 20
Human Influences on Ecosystems
Pollution and Its Effects
Conservation of Resources
Sustainable Development
Unit 21
Biotechnology and Genetic Modification
Uses of Microorganisms
Genetic Engineering Techniques
Applications of Genetic Modification