MadSci Network: Anatomy
Query:

Subject: What color is blood when it doesn't have the heme group?

Date: Wed Apr 9 17:24:01 2003
Posted by Alissa
Grade level: 10-12 School: Prince George's County PS
City: Capitol Heights State/Province: MD Country: No country entered.
Area of science: Anatomy
ID: 1049927041.An
Message:

It has been a struggle this year to get my students to believe that blood is 
red, especially when I hear that one of their other science teachers is telling 
them that it is blue.  When I asked how she could think blood was blue, her 
response was that when blood loses the heme group, it becomes blue.  But even 
still, there isn't much that I can think of in blood that would ever turn it 
blue, no matter if it lost the heme or not.  I am fully aware of that fact that 
iron whether oxygenated or not, is always red.  But what happens when the heme 
group is lost?
Thank you!


Re: What color is blood when it doesn't have the heme group?

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