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
Revision notes
Lungs diagram
Specification Link
This respiratory system diagram is used for: Explain the role of the right ventricle in pumping blood to the lungs.
What To Explain
Gas exchange depends on diffusion gradients and respiratory surfaces adapted for efficient movement of oxygen and carbon dioxide.
Exam Answer Move
The target objective is: Explain the role of the right ventricle in pumping blood to the lungs. The answer should explain gas exchange or respiratory structure-function relationships.
Stomach wall Main cell Border cell Mucous neck cell Fundus membrane diagram
Specification Link
This digestive system diagram is used for: Recall the main sites of production and action of amylase, proteases and lipases.
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: Recall the main sites of production and action of amylase, proteases and lipases. The learner should explain digestion, enzymes or absorption.
Exploded view of digestive apparatus (1) diagram
Specification Link
This digestive system diagram is used for: Recall the main sites of production and action of amylase, proteases and lipases.
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: Recall the main sites of production and action of amylase, proteases and lipases. The learner should explain digestion, enzymes or absorption.
Valves 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.
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