Pearson Edexcel IGCSE Biology | Study Online Starting Today

Course Content

Which lessons are in the iGCSE Biology 2026 course?

Cell Structure and Organisation 30 lessons

Biological Molecules 10 lessons

1 Chemical Elements in Life

2 Carbohydrate Structure

3 Protein Structure and Amino Acids

4 Lipid Structure and Functions

5 Food Testing Practical

6 Enzymes as Biological Catalysts

7 Temperature Effects on Enzymes

8 Enzyme Temperature Practical

9 pH Effects on Enzymes

10 Enzyme pH Practical

Cell Structure 11 lessons

1 Cell Components and Functions

2 Nucleus and Genetic Material

3 Cytoplasm and Organelles

4 Cell Membranes and Walls

5 Mitochondria and Energy

6 Chloroplasts and Photosynthesis

7 Ribosomes and Protein Synthesis

8 Vacuoles and Storage

9 Plant vs Animal Cell Differences

10 Cell Differentiation

11 Stem Cells in Medicine

Levels of Organisation 3 lessons

1 Organelles to Systems

2 Tissue Organisation

3 Organ Systems Overview

Movement of Substances 6 lessons

1 Diffusion Processes

2 Osmosis and Water Movement

3 Active Transport Mechanisms

4 Factors Affecting Movement Rates

5 Surface Area to Volume Ratio

6 Diffusion and Osmosis Practical

Ecology and Environment 34 lessons

Feeding Relationships 8 lessons

1 Trophic Levels

2 Producers and Consumers

3 Decomposers Role

4 Food Chains and Webs

5 Pyramids of Number

6 Pyramids of Biomass

7 Energy Transfer

8 10% Energy Transfer Rule

Human Environmental Impact 11 lessons

1 Air Pollution Effects

2 Sulphur Dioxide and Carbon Monoxide

3 Greenhouse Gases

4 Human Activities and Emissions

5 Enhanced Greenhouse Effect

6 Global Warming Consequences

7 Water Pollution by Sewage

8 Eutrophication Process

9 Deforestation Effects

10 Soil Erosion and Leaching

11 Evapotranspiration Changes

Nutrient Cycles 7 lessons

1 Carbon Cycle Stages

2 Respiration and Photosynthesis

3 Decomposition and Combustion

4 Nitrogen Cycle Stages

5 Nitrogen-fixing Bacteria

6 Nitrifying Bacteria

7 Denitrifying Bacteria

Organisms and Environment 8 lessons

1 Population, Community, Habitat

2 Ecosystem Concepts

3 Quadrat Sampling Methods

4 Population Size Investigation

5 Biodiversity Concepts

6 Distribution Investigation

7 Biodiversity Measurement

8 Abiotic and Biotic Factors

Genetics and Inheritance 32 lessons

Cell Division 6 lessons

1 Mitosis Process

2 Mitosis in Growth and Repair

3 Meiosis Process

4 Gamete Formation

5 Genetic Variation from Fertilisation

6 Chromosome Numbers

DNA and Protein Synthesis 8 lessons

1 Genome and Gene Structure

2 Chromosomes and Genes

3 DNA Double Helix Structure

4 RNA Structure

5 Transcription Process

6 Translation Process

7 mRNA, tRNA and Ribosomes

8 Codons and Anticodons

Inheritance Patterns 11 lessons

1 Alleles and Characteristics

2 Dominant and Recessive Alleles

3 Homozygous and Heterozygous

4 Phenotype and Genotype

5 Codominance

6 Polygenic Inheritance

7 Monohybrid Crosses

8 Family Pedigrees

9 Probability Calculations

10 Sex Determination

11 Sex-linked Inheritance

Variation and Evolution 7 lessons

1 Genetic vs Environmental Variation

2 Mutation Types

3 DNA Changes and Phenotype

4 Mutation Effects on Phenotype

5 Radiation and Chemical Mutagens

6 Natural Selection Theory

7 Antibiotic Resistance

Human Biology 76 lessons

Human Coordination 16 lessons

1 Response to Environmental Changes

2 Homeostasis Principles

3 Stimulus-Receptor-Effector

4 Nervous vs Hormonal Control

5 Central Nervous System

6 Electrical Impulses

7 Neurotransmitters at Synapses

8 Reflex Arc Structure

9 Eye Structure and Function

10 Focusing and Light Response

11 Temperature Regulation

12 Sweating and Vasodilation

13 Hormone Sources and Effects

14 Adrenaline and Insulin

15 Sex Hormones

16 ADH, FSH and LH

Human Excretion 9 lessons

1 Excretory Organs

2 Kidney Structure and Function

3 Urinary System Structure

4 Nephron Structure

5 Ultrafiltration Process

6 Water Reabsorption

7 Glucose Reabsorption

8 ADH and Water Regulation

9 Urine Composition

Human Gas Exchange 7 lessons

1 Thorax Structure

2 Breathing Mechanisms

3 Intercostal Muscles and Diaphragm

4 Alveolar Adaptations

5 Gas Exchange by Diffusion

6 Smoking Effects on Health

7 Breathing Investigation Practical

Human Nutrition 15 lessons

1 Balanced Diet Components

2 Carbohydrates, Proteins and Lipids

3 Vitamins and Minerals

4 Water and Dietary Fibre

5 Energy Requirements and Activity

6 Alimentary Canal Structure

7 Peristalsis and Food Movement

8 Digestive Enzymes

9 Amylase and Carbohydrate Digestion

10 Proteases and Protein Digestion

11 Lipases and Fat Digestion

12 Bile Production and Function

13 Small Intestine Adaptations

14 Villus Structure

15 Food Energy Content Practical

Human Reproduction 6 lessons

1 Reproductive System Structure

2 Menstrual Cycle Hormones

3 FSH and LH Roles

4 Placenta Function

5 Amniotic Fluid Protection

6 Secondary Sexual Characteristics

Human Respiration 6 lessons

1 Respiration and ATP Production

2 ATP and Cellular Energy

3 Aerobic vs Anaerobic Respiration

4 Aerobic Respiration Equations

5 Anaerobic Respiration Equations

6 Respiration Practical

Human Transport 17 lessons

1 Unicellular vs Multicellular Transport

2 Blood Composition

3 Red Blood Cell Adaptations

4 Plasma Transport Functions

5 White Blood Cells and Immunity

6 Phagocytes and Pathogens

7 Lymphocytes and Antibodies

8 Vaccination and Memory Cells

9 Platelets and Blood Clotting

10 Heart Structure

11 Heart Function and Pumping

12 Heart Rate and Exercise

13 Adrenaline Effects

14 Coronary Heart Disease

15 Blood Vessel Structure

16 Arteries, Veins and Capillaries

17 Circulation System Overview

Plant Biology 36 lessons

Plant Coordination 4 lessons

1 Plant Response to Stimuli

2 Geotropic Responses

3 Phototropic Responses

4 Auxin and Growth

Plant Excretion 2 lessons

1 Waste Products in Plants

2 Stomatal Excretion

Plant Gas Exchange 6 lessons

1 Diffusion in Gas Exchange

2 Oxygen and Carbon Dioxide Exchange

3 Leaf Adaptations for Gas Exchange

4 Stomata Function

5 Day and Night Gas Exchange

6 Gas Exchange Practical

Plant Nutrition 8 lessons

1 Photosynthesis Process

2 Photosynthesis Equations

3 Limiting Factors in Photosynthesis

4 Leaf Structure and Adaptations

5 Mineral Requirements

6 Magnesium and Chlorophyll

7 Nitrates and Amino Acids

8 Photosynthesis Practical

Plant Reproduction 9 lessons

1 Sexual vs Asexual Reproduction

2 Insect-Pollinated Flowers

3 Wind-Pollinated Flowers

4 Fertilisation and Seed Formation

5 Seed Germination Conditions

6 Germination Practical

7 Food Reserves in Seeds

8 Natural Asexual Reproduction

9 Artificial Propagation Methods

Plant Transport 7 lessons

1 Need for Transport Systems

2 Phloem and Translocation

3 Xylem and Water Transport

4 Root Hair Cell Absorption

5 Transpiration Process

6 Factors Affecting Transpiration

7 Transpiration Rate Practical

The Nature and Variety of Living Organisms 12 lessons

Characteristics of Living Organisms 4 lessons

1 Requirements of Living Organisms

2 Life Processes and Functions

3 Growth and Development in Organisms

4 Homeostasis and Control Systems

Variety of Living Organisms 8 lessons

1 Classification of Eukaryotes

2 Plant Characteristics and Examples

3 Animal Characteristics and Examples

4 Fungi Structure and Nutrition

5 Protoctist Diversity

6 Prokaryotic Organisms - Bacteria

7 Viral Structure and Characteristics

8 Pathogens and Disease

Use of Biological Resources 40 lessons

Cloning 9 lessons

1 Micropropagation Process

2 Tissue Culture Techniques

3 Commercial Plant Production

4 Identical Plant Advantages

5 Mammalian Cloning Process

6 Nuclear Transfer Techniques

7 Dolly the Sheep Case Study

8 Transgenic Animal Production

9 Human Protein Production

Food Production 19 lessons

1 Glasshouse Crop Production

2 Polythene Tunnel Benefits

3 Carbon Dioxide Enhancement

4 Temperature Control Effects

5 Fertiliser Use

6 Pest Control Methods

7 Pesticide Advantages

8 Biological Control Methods

9 Yeast in Bread Production

10 Anaerobic Respiration Practical

11 Bacterial Yoghurt Production

12 Industrial Fermenter Design

13 Aseptic Conditions

14 Optimum Growth Conditions

15 Fish Farming Methods

16 Water Quality Control

17 Predation Control

18 Disease Prevention

19 Feeding Management

Genetic Modification 7 lessons

1 Restriction Enzymes

2 Ligase Enzymes

3 Plasmids and Viruses as Vectors

4 Recombinant DNA Transfer

5 Human Insulin Production

6 Genetically Modified Plants

7 Transgenic Organisms

Review and Assessment Preparation 2 lessons

1 Practical Skills Review

2 Examination Techniques

Selective Breeding 3 lessons

1 Plant Selective Breeding

2 Animal Selective Breeding

3 Desired Characteristics

Frequently Asked Questions

What is BrainyLemons?

BrainyLemons is an online learning platform that provides comprehensive GCSE and iGCSE courses designed for home study. We offer expert-created content, virtual tutoring support, and flexible learning schedules to help students achieve their academic goals from anywhere in the world.

How do I know if home learning is right for me?

Home learning with BrainyLemons is perfect if you're:

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Our 30-minute lesson format makes it easy to fit studying into your daily routine, whether you're homeschooled, supplementing traditional education, or retaking subjects.

What age groups do you cater to?

Our courses are designed for students typically aged 14-18 taking GCSEs and iGCSEs. However, we welcome adult learners and mature students who want to gain qualifications or improve their knowledge in specific subjects.

Which exam boards do you cover?

We offer courses aligned with major exam boards including:

AQA
Cambridge (iGCSE)
Pearson Edexcel
OCR
WJEC

Each course clearly states which exam board it follows, so you can choose the right one for your needs.

How many subjects can I study at once?

You can enroll in as many subjects as you feel comfortable managing. Most students take 5-9 subjects, but this depends on your goals, available study time, and other commitments. We recommend starting with 3-4 subjects if you're new to home learning.

How long does each course take to complete?

Course duration varies by subject, typically ranging from 100-200 hours of study time. With our flexible approach, you can:

Intensive study: Complete in 6 months (4-5 hours per week)
Standard pace: Complete in 12 months (2-3 hours per week)
Extended study: Spread over 18-24 months for lighter commitment

Are your courses up to date with the latest syllabus?

Yes! All our courses are regularly updated to reflect the most current exam board specifications. We clearly indicate which exam year each course is designed for (e.g., 2026 specifications).

What does a typical lesson look like?

Each lesson is designed to take approximately 30 minutes and includes:

Clear learning objectives
Engaging video content or interactive materials
Written explanations and examples
Practice questions
Knowledge check quizzes
Progress tracking

Can I learn at my own pace?

Absolutely! One of our key advantages is flexible, self-paced learning. You can study when it suits you, repeat lessons as needed, and accelerate through topics you find easier. Our bespoke study timetable feature helps you plan your learning journey.

What if I get stuck on a topic?

We provide multiple support options:

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Do you provide practice papers and exam preparation?

Yes! Each course includes extensive revision materials, practice questions, and exam-style assessments. Our progress tracking system identifies your strengths and areas for improvement, helping you focus your revision effectively.

What equipment do I need?

You only need:

A computer, tablet, or smartphone with internet access
A modern web browser (Chrome, Firefox, Safari, or Edge)
Basic writing materials for note-taking
Optional: Printer for worksheets and practice papers

Can I access courses offline?

While our platform is primarily online to ensure you have the latest content and features, you can download certain materials like worksheets and revision guides for offline study.

Do you arrange exams for students?

No, you are responsible for booking and paying for your own exams. Exam fees are not included in course subscriptions. However, we provide guidance on finding local exam centres and understanding the booking process.

How do I find an exam centre?

We recommend:

Contacting local schools, colleges, or sixth forms
Searching online exam centre directories
Contacting the exam board directly
Considering private exam centres

We provide a helpful guide on our website with step-by-step instructions for finding and booking exam centres.

When should I book my exams?

Most exam boards require registration 4-6 months before the exam date. We recommend researching exam centres and booking as early as possible, especially for less common subjects or if you live in a remote area.

What grades do students typically achieve?

Our students have a 97% success rate, with many achieving grades 7-9 (A*-A equivalent). Success depends on consistent study, engagement with materials, and effective exam preparation.

How much do courses cost?

Individual courses start from £49.99-£50 per subject. We also offer bundle discounts for multiple subjects and payment plan options to make learning more affordable.

Do you offer discounts?

Yes! We provide:

Multi-subject bundle discounts
Early bird pricing for advance bookings
Price match promise against competitors
Special offers for newsletter subscribers
Family discounts for siblings

What's included in the course fee?

Your course fee includes:

12 months access to all course materials
260+ lessons per subject (varies by course)
Virtual tutor support
AI advisor access (24/7)
Progress tracking and reporting
Interactive quizzes and assessments
Revision materials and practice papers

What's NOT included?

Course fees do not include:

Exam registration fees
Exam centre costs
Physical textbooks (though digital resources are provided)
Individual face-to-face tutoring

What support do parents receive?

Parents get:

Detailed progress reports showing strengths and areas needing support
Study guide resources to monitor upcoming lessons
Complete visibility of their child's learning journey
Safety assurance with our fully moderated, child-friendly platform
Flexible scheduling options to fit family routines

How do you ensure student safety online?

We maintain a fully moderated, child-friendly platform with:

Secure login systems
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Age-appropriate content
Privacy protection measures
Clear reporting mechanisms for any concerns

What if I'm not satisfied with my course?

We're confident in our course quality, but if you're not satisfied within the first 14 days, we offer a full refund. After this period, we'll work with you to address any specific concerns and ensure you get the most from your learning experience.

How does online learning compare to classroom teaching?

Online learning with BrainyLemons offers:

Flexibility: Study when and where it suits you
Personalisation: Learn at your own pace
Accessibility: 24/7 access to materials and support
Focused attention: No classroom distractions
Comprehensive resources: Everything you need in one place

However, it requires more self-discipline and motivation than traditional classroom learning.

Will universities and employers accept my qualifications?

Yes! GCSEs and iGCSEs obtained through independent study are identical to those achieved in traditional schools. What matters is your exam results, not how you prepared for them. Our courses prepare you for the same official exams as school students.

How do I stay motivated when studying alone?

We help maintain motivation through:

Clear progress tracking and celebration of achievements
Interactive quizzes and games that make learning fun
Regular check-ins with virtual tutors
Flexible scheduling that prevents burnout
Community features to connect with other learners

How can I contact support?

Email: support@brainylemons.com
Live Chat: Available on our website during business hours
Help Centre: Comprehensive guides and tutorials
Community Forum: Connect with other students and get peer support

What makes BrainyLemons different from other online learning platforms?

Expert-created content aligned with official exam specifications
30-minute lesson format perfect for busy schedules
24/7 AI support plus specialised virtual tutors
97% success rate with proven results
Comprehensive progress tracking for students and parents
Affordable pricing with flexible payment options
12 months access giving you plenty of time to complete courses

Got questions? Contact us!

Biology

Course fee: £49.99

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Which lessons are in the iGCSE Biology 2026 course?

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