Which Statement Is NOT True About Red Blood Cells

question 49

Multiple Choice

Which statement is NOT true about red blood cells?

• A)They are biconcave disks that lack nuclei when mature.
• B)Their normal life span is about 120 days.
• C)Hemoglobin is a protein that binds oxygen loosely to transport it.
• D)There are about 6 million red blood cells per cubic millimeter of whole blood.
• E)They are mainly produced in the liver.

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