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प्रश्न
Explain with reasons.
Human blood is red coloured.
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उत्तर
Blood is red because it is composed of red cells known as red blood cells. Hemoglobin is a protein found within red blood cells. Each hemoglobin protein is composed of subunits known as hemes, which are responsible for the red colour of blood. Hemes, in particular, can bind iron molecules, and these iron molecules bind oxygen. Because of the interaction between iron and oxygen, blood cells are red. When iron is oxygenated, it turns red, and blood turns red as a result.
संबंधित प्रश्न
Explain with tile help of a chart, explain the compatibility of human blood groups.
Match the statements in Column A with those in Column B:

Given below is a highly schematic diagram of the human blood circulatory system.
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- Which part (state the number) represents the heart? Give reason in support of your answer.
- Which numbers represent the following, respectively?
Aorta Superior vena cava Hepatic portal vein Renal Vein Pulmonary artery Stomach
Name the organ from which oxygenated blood goes into the heart
Name the Following
The blood plasma from which fibrinogen has been removed.
Long answer question:
Describe human blood and give its functions.
The process of keeping the blood flowing continuously throughout the body.
______ is an agranulocyte.
The heart is covered by ______.
Which component of the haemoglobin molecule combines with the oxygen molecule to form oxyhaemoglobin?

