Question

Why the blood looks like red?


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Answer 1

Answer:

Blood contains three kinds of blood cells. Out of which Red Blood cells contains an iron & red pigment called haemoglobin. Haemoglobin imparts red colour to the blood.

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Answer 2

Answer:

Human blood is red because hemoglobin, which is carried in the blood and functions to transport oxygen, is iron-rich and red in color. ... It's bright red when the arteries carry it in its oxygen-rich state throughout the body.

RBCs contain hemoglobin (say: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs. As the blood travels through the body, the hemoglobin releases oxygen to the different body parts. Each RBC lives for about 4 months.

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