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Combined Science
AQA GCSE Combined Science Trilogy
Paper 2

AQA GCSE Combined Science Trilogy · 8464

AQA GCSE Combined Science Trilogy Paper 2

Biology Paper 2

Length: 1 hour 15 minutes
Marks: 70
Weighting: 16.7% of the GCSE

From the AQA specification (opens in a new tab), Version 1.2, PDF page 10.

3 sections · 37 revision notes

What’s on Paper 2

4.5 Homeostasis and Response

Homeostasis · Human Nervous System · Hormonal Coordination9 notes

4.5.1 Homeostasis

Principles of Homeostasis Free

4.5.2 Human Nervous System

Paper 2 past papers

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Other papers

Paper 1 Paper 3 Paper 4 Paper 5 Paper 6

Nervous System Structure and Function

2 notes

Nervous Coordination and Reflex Arcs Pro
Investigating Reaction Time and Interpreting Data Pro

4.5.3 Hormonal Coordination

4.5.3.1 Human Endocrine System Pro
4.5.3.2 Blood Glucose Control Pro
4.5.3.3 Reproductive Hormones Pro
4.5.3.4 Contraception Methods Pro
4.5.3.5 Hormonal Infertility Treatments Pro
4.5.3.6 Feedback Systems Pro

Homeostasis and Response overview

4.6 Inheritance, Variation and Evolution

Reproduction · Variation and Evolution · Understanding of Genetics and Evolution · Classification of Organisms15 notes

4.6.1 Reproduction

4.6.1.1 Sexual and Asexual Reproduction Free
4.6.1.2 Meiosis Pro
4.6.1.3 DNA and the Genome Pro
4.6.1.4 Genetic Inheritance Pro
4.6.1.5 Inherited Disorders Pro
4.6.1.6 Sex Determination Pro

4.6.2 Variation and Evolution

4.6.2.1 Variation Pro
4.6.2.2 Evolution Pro
4.6.2.3

4.6.3 Understanding of Genetics and Evolution

4.6.3.1 Evidence for Evolution Pro
4.6.3.2 Fossils Pro

4.6.4 Classification of Organisms

Classification Systems Pro

Inheritance, Variation and Evolution overview

4.7 Ecology

Adaptations, Interdependence, and Competition · Ecosystem Organization · Biodiversity and Human Interactions13 notes

4.7.1 Adaptations, Interdependence, and Competition

4.7.1.1 Communities Free
4.7.1.2 Abiotic Factors Pro
4.7.1.3 Biotic Factors Pro
4.7.1.4 Adaptations and Extremophiles Pro

4.7.2 Ecosystem Organization

4.7.2.1 Levels of Organization and Trophic Relationships 2 notes
- Food Chains and Predator–Prey Cycles Pro
- Ecological Sampling and Data Analysis Pro

4.7.3 Biodiversity and Human Interactions

4.7.3.1 Importance of Biodiversity Pro
4.7.3.2 Waste Management and Pollution Pro

Ecology overview

Selective Breeding

Pro

4.6.2.4 Genetic Engineering Pro

4.6.3.3

Extinction

Pro

4.6.3.4 Resistant Bacteria Pro

4.7.2.2

Cycling of Materials in Ecosystems

Pro

4.7.3.3

Human Land Use and Habitat Destruction

Pro

4.7.3.4 Causes and Effects of Deforestation Pro

4.7.3.5 Biological Consequences of Global Warming Pro

4.7.3.6 Maintaining Ecosystems and Biodiversity Pro