Textbook: Comparing Gas Exchange Systems

£2.99

Master Comparing Gas Exchange Systems fast ⚡ – clear explanations, supportive visuals, OCR-aligned.

Master Comparing Gas Exchange Systems fast ⚡ – clear explanations, supportive visuals, OCR-aligned.

You’ll cover
• The main gas exchange systems in mammals, fish and insects.
• The structures involved in mammalian, fish and insect gas exchange.
• The key adaptations that increase efficiency of gas exchange in each system.
• How diffusion distance, surface area and ventilation differ between systems.
• Countercurrent exchange in fish gills and why it increases oxygen uptake.
• How insects deliver oxygen directly to respiring tissues.

What’s included
• Clear comparison tables outlining structure, gas exchange surface and adaptations in mammals, fish and insects.
• Structured tables comparing fish and insect gas exchange systems feature by feature.
• Visual summaries linking structural adaptations to environmental demands.
• Clear contrasts between water-based and air-based gas exchange.
• Concise spec reminders embedded alongside tables to reinforce key OCR wording and expectations.

Format
Web-based textbook topic. Mobile/desktop friendly. Access with no time limit, updates included.

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All resources are written specifically for OCR A Level Biology A (H420). We do not currently offer resources for other exam boards.

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