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A-Level Biology OCR A

Cells Functions Food State Blood Transport O2 Co2

Front State functions of the blood.
Back Functions of the blood - transport of:
  • O2 to and CO2 from respiring cells
  • Digested food from small intestine
  • Nitrogenous waste products from cells to excretory organs
  • Hormones
  • Food molecules from storage mols to cells that need them
  • Platelets to damaged areas
  • Cells and antiboides involved in immune response

Other functions:
  • Maintaining steady body temp
  • Buffer to minimise pH changes

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