Why bloods are red colour, and what makes it red?

@beloved (354)
India
December 15, 2006 1:58pm CST
Just wondering what makes bloody colour red? why its not other color
3 responses
lsen06
@lsen06 (4998)
• India
18 Dec 06
due to homeoglobin.
beloved
@beloved (354)
• India
20 Dec 06
Thanks for your reply
guito2005
@guito2005 (175)
• Portugal
15 Dec 06
human blood - A scanning electron microscope (SEM) image of normal circulating human blood. One can see red blood cells, several white blood cells including knobby lymphocytes, a monocyte, a neutrophil, and many small disc-shaped platelets.
it's because of the hemoglobin, you can see that in: http://en.wikipedia.org/wiki/Hemoglobin
kesfylstra
@kesfylstra (1868)
• United States
15 Dec 06
Oxygen makes it red. Unoxygenated blood is blue (why your veins show blue through your skin). I don't know why though, I'm not very good at biology either.