2006-07-11 03:27:55 · 18 answers · asked by CoolHardik 1 in Science & Mathematics ➔ Physics
You have a problem with that? Guess even the animals have red blood.
2006-07-11 03:31:13 · answer #1 · answered by TOO HOT 4 · 0⤊ 0⤋
Humans have red blood because of the red blood cells in peoples bodies. If the red cells die off that is when a person is looking pale.
2006-07-11 03:30:46 · answer #2 · answered by Pre lives on 5 · 0⤊ 0⤋
the human blood is not red inside the blood vessels. when some one gets an injury the blood come in contact with the oxygen in air then it becomes red because it gets oxygenated.
2006-07-11 05:16:15 · answer #3 · answered by surjit1754 2 · 0⤊ 0⤋
The protein hemoglobin, which carries oxygen in the blood, changes shape when
it binds oxygen. When it changes shape, it absorbs different wavelengths of light,
making it change color. When blood is exposed to air, much more of the hemoglobin
absorbs oxygen than had in the vein the blood came from (in the veins, the hemoglobin
has already given up most of its oxygen to the body). Therefore, the blood turns red.
2006-07-11 03:32:50 · answer #4 · answered by elcycer 3 · 0⤊ 0⤋
It's not normally red. Hemoglobin, which carries the oxygen in your blood, absorbs air ... more when outside the body. So much that it actually absorbs more of the red wavelength. Blood inside the body is actually blueish.
2006-07-11 03:32:05 · answer #5 · answered by Keith 4 · 0⤊ 0⤋
Humans have red blood due to the presence of haemoglobin in the blood which is composed of iron
Haemoglobin combines with oxygen to form oxyhaemoglobin WHICH IS AN EXTREMELY UNSTABLE COMPOUND AND SO IT AGAIN BREAKS INTO HAEMOGLOBIN GIVING RED COLOUR TO BLOOD
2006-07-11 04:28:57 · answer #6 · answered by Vatsal S 2 · 0⤊ 0⤋
Our blood may appear red as it contains millions of red blood cells. This red blood cells contain haemoglobin (which makes it red) to absorb oxygen, making our blood appear red!
2006-07-11 03:33:37 · answer #7 · answered by noob 1 · 0⤊ 0⤋
Because we are all human? You blood isn't really red, it just looks that way.
2006-07-11 03:30:18 · answer #8 · answered by DutchApplePie 4 · 0⤊ 0⤋
It's red because of the iron in our blood. Ferrous Sulfate!
2006-07-11 03:30:23 · answer #9 · answered by ? 3 · 0⤊ 0⤋
We don't. We have blue blood. It's only red when it's exposed to oxygen.
2006-07-11 03:30:48 · answer #10 · answered by anonymous 3 · 0⤊ 0⤋