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7 June, 00:16

Which of the following is true of red blood cells?

A. They have multiple nuclei

B. Once created in bone marrow, they circulate for our lifetime

C. They live for only 120 days

D. They live for only about 20 days

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  1. 7 June, 00:33
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    C. They live for only 120 days

    Explanation:

    Well, not exactly 120 days but they live for about 100-120 days. red blood cells are also called erythrocytes. Unlike other cells, they do not have a nucleus. The red blood cells circulate through the body for about 100 to 120 days and are eventually recycled. Their main function is to carry oxygen to the different parts of the body.
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