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Blood Plasma
· A yellow liquid.
· Transports all the things in the blood:
· Urea.
· Platlets.
· Whiteblood cells.
Red Blood Cells
· Give blood red colour.
· Have no nucleus.
· More space for haemoglobin.
· Biconcave dics.
· Large surface area : volume ration for diffusion.
· Full of haemoglobin which carries oxygen.
Haemoglobin.
· Large protein molcule & 4 iron atoms.
· Reacts with oxygen to form oxyhaemoglobin.…read more

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