Question

what makes the blood red?​

Answer 1

Answer:

Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme that's crucial for carrying oxygen through your bloodstream. ... That's why blood turns bright cherry red when oxygen binds to its iron. Without oxygen connected, blood is a darker red color

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Answer 2

Explanation:

Human blood is red because of the protein hemoglobin,which contains a red- coloured compound called heme that's crucial for carrying oxygen through our bloodstream....that's why blood turns bright cherry red when oxygen binds to it's iron.