why is the colour of blood red? i mean why is it not blue or green or even white. yes white.?

Question

it just baffles me. pls say

Answer 1

In humans and other hemoglobin-using creatures, oxygenated blood is bright red. This is due to oxygenated iron in the red blood cells. Deoxygenated blood is a darker shade of red, which can be seen during blood donation and when venous blood samples are taken. However, due to an optical effect caused by the way in which light penetrates through the skin, veins typically appear blue in color. This has led to a common misconception that venous blood is blue before it is exposed to air. Another reason for this misconception is that medical charts always show venous blood as blue in order to distinguish it from arterial blood which is depicted as red on the same chart.

The blood of horseshoe crabs is blue, which is a result of its high content in copper-based hemocyanin instead of the iron-based hemoglobin found, for example, in humans.

See the source below-

Answer 2

Well actually, blood while in the body, is a very deep dark red, much like a mix of crimson and indigo. However, once the air hits it, (such as with a cut on the skin) it becomes a much brighter red.

Red blood cells are red only because they contain a protein chemical called hemoglobin which is bright red in color. Hemoglobin contains the element Iron, making it an excellent vehicle for transporting oxygen and carbon dioxide. As blood passes through the lungs, oxygen molecules attach to the hemoglobin. As the blood passes through the body's tissue, the hemoglobin releases the oxygen to the cells. The empty hemoglobin molecules then bond with the tissue's carbon dioxide or other waste gases, transporting it away.

Let's not forget that, in addition to red blood cells, we also have several types of white blood cells!

Answer 3

Blood is comprised of of both 'white and 'red' blood cells. Mostly red, which is why the colour is red. If you want to know why the cells are red... that's a whole other question.
Things are certain colours because everything absorbs light, but only a certain percent of that light is reflected back to the person who can see it. Mirrors for example reflect back about 95% of the light they absorb. White things have quite a high percentage of reflection all the way down to black things which have a low percentage of reflection. So red blood cells are red because they absorb the same amount of light that all red things do.

Answer 4

The color of blood comes from the red blood cells (RBC's, also called erythrocytes), which make up about 40% of blood, by volume. Each red blood cell is filled with hemoglobin, the protein which carries oxygen to tissues and carbon dioxide away from tissues. Hemoglobin carries oxygen by using heme, a large ring-like molecule which has at its center a single atom of iron, which is what actually binds to the oxygen.

Answer 5

Then reason that 'blue blood' is associated with 'royalty' and 'poshness' is because in days long by, the working class worked outside in the sun wind and rain and basically their skin got weathered.

Royalty and the upper class kept out of the sun and weather, their skin stayed white, which made the blue of the veins stand out more. So, 'blue blood' is associated with the upper class. It's an optical effect.

Blood is red because of the iron content, which is essential for the oxygen carrying capabilities of red blood cells.

Answer 6

because Blood is composed of plasma, water & cellular components which are :
-Red Blood Cells
-White Blood Cells
-Platelets

When the hemoglobin in the blood combines with oxygen, it turns bright red. It is said to be oxygenated.

Answer 7

Blood is red bcuz it contains oxygen. your heart pumps blood from left to right, and when that blood comes back around to the heart, it is actually blue in colour bcuz your body has absorbed the oxygen in it. if we cut ourselves, blood from the wound appears red bcuz of the oxygen in the air. hope this helps. Happy New Year!!!

Answer 8

The liquid part of blood is straw coloured, its the red cells that make it look red. Its the haemoglobon in those cells that make them look red and thus gives blood its colour;

Answer 9

The iron in your red blood cells, and oxygen together make your blood red- like rusty metal.

Answer 10

I have the scientific answer!

As you know, the blood consist of;
RBC; Red Blood Cells
WBC;White~ ~ ~
plasm

RBCs are red because of the existence of Hemoglobin "Hgb" in it.
Okay! "Hemoglobin": consist of TWO words;
Heme; which gives the RED color for the blood;
this part bind to Oxygen.O2

Globin: the other part of hemoglobin;
this part bind with Carbon dioxide; CO2

if it is not clear, plz. ask again!

Good Luck!