Do spiders have blue blood ?
Hi!Yes...The spiders blood is different from the
men's blood. In humans the oxigen is bound to hemoglobin,
a molecule that contains iron and beeing red gives
that colour to the blood. In spiders, and in
many other arthropods (as crustaceans) and also in
most mollusks the oxigen is bound to a different
molecule called hemocyanin that contains copper
instead of iron.
The hemocyanins are proteins colourless in the
reduced or deoxygenated state but the oxydized
copper beeing blue/green, gives that colour to
the oxygenated blood.
Therefore...spiders have "blue" blood...
Thanks for asking NEWTON
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Update: June 2012