• Question: why is blood red?

    Asked by poppywheeler3 to Angela, Gopal, Hannah, Becky, Vince on 25 Jun 2013.
    • Photo: Rebecca Cook

      Rebecca Cook answered on 25 Jun 2013:

      Blood is made up of red blood cells, white blood cells and plasma. Red blood cells give blood its colour because they contain a molecule called haemoglobin which binds to iron and produces the red colour.

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