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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 ABO blood group system in human being with a suitable chart.
The diagram given below represents a section of the human heart. Answer the questions that follow :
(i) Which parts of heart are in the diastolic phase? Give a reason to support your answer.
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(iii) What causes the heart sounds ‘LUBB’ and ‘DUP’?
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(v) Draw neat labelled diagrams of a cross section of an artery and a vein.
the Biological/technical term for Blood vessels carrying blood to the left atrium.
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Write a short note on the human heart.
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Name these:
Three circulating fluids in human body.
