AQA GCSE Biology revision notes
Animal tissues, organs and organ systems Revision Notes
Study Animal tissues, organs and organ systems with curriculum-aligned Revision Notes resources, practice links, and exam-focused support.
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Animal tissues, organs and organ systems
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Heart vascularization diagram
Specification Link
This circulation diagram is used for: Explain that the heart pumps blood around the body in a double circulatory system.
What To Explain
The heart and blood vessels work together to maintain blood flow between the lungs, body tissues and the heart.
Exam Answer Move
This links the diagram to: Explain that the heart pumps blood around the body in a double circulatory system. A strong answer follows the pathway or explains how circulation supports exchange at tissues.
Digestive system 21 diagram
Specification Link
This digestive system diagram is used for: Explain that digestive enzymes convert large insoluble food molecules into small soluble molecules that can be absorbed into the blood.
What To Explain
Digestive organs and enzymes break large insoluble food molecules into smaller soluble molecules that can be absorbed.
Exam Answer Move
This is tied to: Explain that digestive enzymes convert large insoluble food molecules into small soluble molecules that can be absorbed into the blood. The learner should explain digestion, enzymes or absorption.
Digestive system 19 diagram
Specification Link
This digestive system diagram is used for: Explain that digestive enzymes convert large insoluble food molecules into small soluble molecules that can be absorbed into the blood.
What To Explain
Digestive organs and enzymes break large insoluble food molecules into smaller soluble molecules that can be absorbed.
Exam Answer Move
This is tied to: Explain that digestive enzymes convert large insoluble food molecules into small soluble molecules that can be absorbed into the blood. The learner should explain digestion, enzymes or absorption.
Nervous system 38 diagram
Specification Link
This nervous system diagram is used for: Explain the effects of alcohol on the liver and brain function.
What To Explain
Alcohol can affect brain function by slowing nervous-system responses and impairing coordination or decision making.
Exam Answer Move
The mapped objective is: Explain the effects of alcohol on the liver and brain function. A strong answer links the brain to nervous-system control and the effect of alcohol on function.
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