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All human blood contains hemoglobin (spelled differently in different countries) Blood is bright red when oxygenated, and very dark red when oxygen is depleted (in veins) It is never blue.
For animals that do have blue blood, ie, molluscs and many arthropods such as Horseshoe Crabs, this is due to the oxygen being carried by copper-containing haemocyanin, rather than iron-containing haemoglobin.
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Hemoglobin makes this red When it's deoxygenated it looks blue What is it?
blood
Why blood red in colour?
The hemoglobin in the blood goes red when it absorbs oxygen. Blood is not always red, if it is lacking in oxygen, it is infact blue. If you look at the veins in your arm or hand, they do not have much blood and therefore will be blue. You will never see blue blood because if you cut yourself, the blood is exposed to the air, allowing it to be oxygenated and thus turning it red.
What is the colours of a whales blood?
Whales have blue blood because of the low amount of hemoglobin in their blood
Why is human blood red?
Because of the presence of hemoglobin in our blood.Human blood is red only when it is oxygenated, meaning oxygen molecules have bound to hemoglobin in the red blood cells after the blood passed through lung tissues. Blood where no oxygen is bound to the hemoglobin will be blue in color.Inside the body, blood leaving the lungs is bright red because it is freshly oxygenated. Blood returning from various parts of the body to the lungs will be blue because it is is devoid of oxygen.Blood from a cut or wound is always red because oxygen in the air binds with the hemoglobin.
If an astronaut died in space in a crash of some kind and he was bleeding would his blood be blue or red?
the blood is always red . The red colour of the blood is caused by an iron compound hemoglobin. neither in earth nor in space hemoglobin could suddenly turn blue so the blood of the bleeding astronaut will always be red
What color is lizards' blood?
Almost all vertebrates use the iron compound hemoglobin as the oxygen-transporting compound in their blood. Oxygenated hemoglobin is bright red, unoxygenated darker red.
Why some anymal has blue blood?
Some animals (like horseshoe crabs) have blue blood because they use hemocyanin carry oxygen to their tissues instead hemoglobin like we do. The copper in the hemocyanin makes their blood appear blue.
Why are squids blood blue?
To understand why octopus blood is blue, we need to first understand why our blood is red. The blood of most vertebrates (animals containing a backbone..ie: Humans, dogs, birds, reptiles, etc...) is red because our blood contains a protein called hemoglobin. Hemoglobin is the molecule responsible for carrying oxygen. Hemoglobin is located in red blood cells. When red blood cells enter the lungs, hemoglobin binds oxygen molecules, and as the red blood cells flow throughout our bodies, hemoglobin releases the oxygen to our cells, nourishing them. The way that this is done is through the use of Iron. Iron (specifically Iron III) is an ideal molecule for binding oxygen. When iron binds oxygen it turns RED. This is why our blood is red; because the hemoglobin within our red blood cells contains iron, which turns red when bound to oxygen. When hemoglobin is not bound to oxygen, our blood is blue as well. Go ahead, look at one of your veins. Veins carry oxygen-depleted blood back to the lungs and heart. Until this blood contacts more oxygen, it remains blue. Now to answer the question: why is octopus blood blue? In short, Octopus blood lacks hemoglobin, and hence lacks iron. Oxygen transfer is accomplished by another (less efficient) protein known as hemocyanin. This protein, as well as other molecules in the octopus' blood give it the characteristic blue color.
Why do you red blood cells contain hemoglobin?
No, white blood cells do not contain hemoglobin; red blood cells contain hemoglobin (and it is the hemoglobin that gives them their red color).
Why do you see red blood?
That's easy. When blood is in your body it is blue that's why your veins are blue. When oxygen meets the blood the blood turns red.
Why is blood red and veins blue?
Blood is red because of the iron in hemoglobin, a protein in red blood cells that carries oxygen. Veins appear blue because of the way light interacts with the skin and the blood vessels beneath it.
Why is blood in red colour?
Blood is not always red. The colour is dependant on it's exposure to oxygen. If there is oxygen in the blood it has a red colour. That is why whenever you bleed your blood is red, because it reacts with the oxygen in the air. When there is no oxygen in your blood though, your blood has a blue colour.
