Blood is red because it contains red blood cells.
Human blood is red, ranging from bright red when oxygenated to dark red when
not. It owes its color to hemoglobin, to which oxygen binds. Deoxygenated blood
This blood is bright red. It also spurts out in pulses instead of oozing like the
blood from veins. So even outside the body, blood can be different colors. (What's
I recently had a discussion in my biology class on what color blood is.Most of my
class, including my biology teacher, were saying that blood is ...
Nov 12, 2013 ... And is everyone's blood always the same color red (spoiler: no)? .... What in
oxygen would change the blood from red to blue? I'm not sure, but ...
Oct 16, 2012 ... Blood is always red, actually. Veins look blue because light has to penetrate the
skin to illuminate them, blue and red light (being of different ...
Feb 11, 2008 ... The physical issue is about color. Is “purple” a kind of red, or is it a kind of blue?
Beyond that, is blood that is “dark red” or “purple” really purple?
Oct 28, 2014 ... However, red is not the only blood colour available – it also comes in blue, green,
violet, and even colourless varieties – and this is a result of ...
Mar 1, 2012 ... If a blood vessel is on the surface of the skin, it absorbs all the blue light it gets (
as well as most of the shades of red light and other colors) and ...
Mar 12, 2015 ... Blood isn't always red—evolution has given rise to a variety of hues.