CAIE IGCSE Biology (0610) Gas Exchange PowerPoint: Complete Lesson for 2026 Exams on TES Resources
This engaging, exam-focused PowerPoint covers CAIE IGCSE Biology 0610 syllabus Topic 11: Gas Exchange in Humans and single-celled organisms, with adaptations for lungs, alveoli, fish gills, and more – perfect for GCSE Biology teachers and tutors preparing students for 2026/2027 Cambridge exams.

Key features:
Alveoli adaptations: Large surface area (70m²), thin walls (1 cell thick), moist lining, dense capillary network, good ventilation, steep concentration gradients for O2/CO2 diffusion.
• Breathing mechanism: Detailed inhalation/inspiration (diaphragm contracts, intercostal muscles, ribs up/out, thorax volume up, pressure down) and exhalation/expiration; inspired/expired air composition; effect of exercise.
• Respiratory system structure: Labelled diagrams of trachea, bronchi, bronchioles, pleural membranes; gas exchange surfaces properties (large SA, thin, ventilated, blood supply).
Download this IGCSE Biology gas exchange PPT now for outstanding revision lessons on diffusion in alveoli, gill filaments, ventilation, and respiration links – top-rated TES Biology resource for Cambridge International success!