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A-Level Biology OCR A

Oxygen Draw Label Annotate Erythrocytes Specialised Function Flattened

Front Draw, label and annotate how erythrocytes are specialised for their function.
Back Erythrocytes:
  • Flattened biconcave shape - increases SV ratio
  • Flexible - able to squeeze through narrow capillaries
  • No nuclei & many other organelles in mammals - more space for haemoglobin that carries oxygen
  • These features are all essential for their role of transporting oxygen around the body

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