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    Question

    What is the average lifespan of a human red blood cell (RBC)?

    A 60 days Correct Answer Incorrect Answer
    B 90 days Correct Answer Incorrect Answer
    C 120 days Correct Answer Incorrect Answer
    D 150 days Correct Answer Incorrect Answer

    Solution

    Human red blood cells (RBCs) have an average lifespan of 120 days before being recycled by the body.

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