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GCSE Biology (Triple) WJEC
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GCSE Biology (Triple) WJEC
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GCSE Biology (Triple) WJEC
– Topics
Cell Division and Stem Cells
Outcomes of Mitotic and Meiotic Divisions
Stem Cells Replacing Damaged Tissue
Stem Cells
Cancer as a Result of Uncontrolled Mitosis
Cell Division by Mitosis and Meisosis
Chromosomes
Cells and Movement across Membranes
Effect of Temperature and pH on Enzyme Activity
Enzyme-substrate Complexes
Enzyme Control of Chemical Reactions in Cells
Active Transport
Osmosis
Diffusion
Specialised Cells
The Structure of Animal and Plant Cells
Specific Shapes of Enzymes
Levels of Organisation within Organisms
Use of a Light Microscope
Circulatory System in Humans
Risk Factors for Cardiovascular Disease
The Flow of Blood
The Role of the Coronary Vessels
The Structure of Heart
Functions of Red Cells, Platelets, Plasma, White Cells
Double Circulatory System (Pulmonary and Systemic)
The Structure of a Phagocyte and a Red Blood Cell
Classification and Biodiversity
The Principles of Capture/Recapture Techniques
The Principles of Sampling
Individual Organisms needing Resources from their Environment
Morphological and Behavioural Adaptations of Organisms
The Use of Biological Control Agents and Possible Issues
Using Quadrats to Investigate the Abundance of Species
Biodiversity
Classifying Organisms into Groups
Range of Sizes, Features and Complexity of Living Oragnisms
DNA and Inheritance
Artificial Transfer of Genes from One Organism to Another
Genetic Profiling
The Structure of DNA
Sex Determination in Humans
Phenotypic Features
Single Gene Inheritance
Genes as Sections of DNA Molecules
DNA Profiling
Complementary Base Pairing between A and T, C and G
Digestion and the Digestive System in Humans
The Need for a Balanced Diet
Fate of the Digested Products of Fats, Carbohydrates and Proteins
Structure of the Human Digestive System and Associated Structures
Tests for the Presence of Starch, Glucose, Protein
The Need for Digestion
The Implications of Sugar, Fat and Salt in Foods
Absorbing Soluble Substances
The Function of Bile
How Food is Moved by Peristalsis
Role of Organs in Digestion and Absorption
Carbohydrase, Protease, Lipase in Digestion
Digestion of Larger Insoluble Molecules
Disease, Defence and Treatment
Preventing Some Conditions with Drugs or by other Therapies
Vaccination
How the Body Defends Itself from Disease
Communicable Diseases
Pathogens
Monoclonal Antibodies
New Drug Treatments
Resistant Bacteria as a Result of Over Use of Antibiotics
Antibiotics
Antigens
HIV/AIDS, Chlamydia and Malaria
The Harmless Nature of Most Micro-organisms
Ecosystems, Nutrient Cycles and Human Impact on the Environment
Effects of Untreated Sewage and Fertilisers
Metals, Industrial Waste, Pesticides entering a Food Chain
Nutrients are Released in Decay
Calculating the Efficiency of Energy Transfers
Pyramids of Numbers and Biomass
Signs of Pollution
Advantages and Disadvantages of Intensive Farming Methods
Balancing Human Requirements and the Needs of Wildlife
The Nitrogen Cycle
The Carbon Cycle
Importance of Micro-organisms
Food Chains and Food Webs
Kidneys and Homeostasis
Filtration
The Structure of a Nephron
The Structure of the Human Excretory System
The Functions of the Kidkeys
Transplants
Dialysis
How the Kidneys Regulate the Water Content of the Blood
Micro-organisms and their Applications
Factors Influencing Growth of Penicillium
The Link Between the Number of Bacterial Colonies on the Agar and the Number of Bacteria in the Original Sample
The Safe Use of Basic Aseptic Techniques
Effect of Temperature on Bacteria Growth
Plants and Photosynthesis
The Uses Made by Plant Cells of the Glucose Produced in Photosynthesis
Imprtance of Photosynthesis
The Practical Techniques used to Investigate Photosynthesis
Limiting Factors of Photosynthesis
Respiration and the Respiratory System in Humans
The Effects of Smoking
Percentage Composition of Inspired and Expired Air and the Reasons for Differences
Structure of an Alveolus and its Blood Supply
The Bell Jar Model
The Function of Mucus and Cilia in the Respiratory System
Anaerobic Respiration
Aerobic Respiration
Mechanisms of Inspiration and Expiration
The Need for and Purpose of the Respiratory System
Response and Regulation
Conditions Affected by Lifestyle Choices
Structure of a Section through the Skin
Glucose Levels
Hormones as Chemical Messengers
The Components of a Reflex Arc
The Properties of Reflex Actions
Principles of Negative Feedback Mechanisms
Diabetes
The Nervous System
Organs - Groups of Receptor Cells which Respond to Specific Stimuli
Variation and Evolution
The Human Genome
Ongoing Evolution as Illustrated by Antibiotic Resistance in Bacteria
Natural Selection
Characteristics Adapted to the Organism's Environment
Heritable Variation as the Basis of Evolution
New Genes as a Result from Changes and Mutations in Existing Genes
Sexual Reproduction Leading to Offsprings being Different from Parents
Mutations Causing Conditions which may be Passed On in Families
Variation in Individuals of the Same Species