Whatever the color of a person’s body may be, black, fair or brown, the color of the blood present within him is always red. Apart from humans, the color of blood of animals is also red. However, there are some creatures on this earth whose blood color is blue or white. But the color of blood of most animals is red, no matter which species they belong to. Let us know why this happens.
Why is the color of blood red
The red color of blood is mainly due to a protein, hemoglobin. There is a reason. Let us tell you, hemoglobin is an iron-rich protein, which is found in red blood cells i.e. erythrocytes. Its function is to deliver oxygen to different parts of the body and bring carbon dioxide back to the lungs.
If we understand it in scientific terms, when hemoglobin is bound to oxygen, its color is bright red. It happens. When hemoglobin binds with carbon dioxide, which you know as deoxyhemoglobin, the color of the blood becomes dark red or blue. Let us tell you, the color of blood in the veins present in our body is dark, whereas in the arteries this color is bright red.
What is the main function of hemoglobin p>
The main function of hemoglobin is to transport oxygen and carbon dioxide from one place to another. Actually, when blood reaches different parts of the body, hemoglobin releases oxygen and accepts carbon dioxide. This process is necessary for the metabolism of cells. This is because cells need oxygen to obtain energy.
Understand the structure of hemoglobin
Hemoglobin is a type of protein, which It is made up of four sub-units i.e. chains. Each chain contains a heme group, which contains an ion of iron (Fe). This iron ion has the ability to bind with oxygen. When the blood reaches the lungs, the oxygen present in it binds with the iron of the heme groups, due to which hemoglobin becomes oxygenated i.e. oxyhemoglobin. Also read: This is how Jews were tortured in Hitler’s camps, how out of 60 lakh Jews, 15 lakh children were also killed.