The number that is unmatched represents the average life in days of a red blood cell. How many days does a typical human blood cell live? (The unmatched number is 120)
A normal red blood cell lives for about 120 days.
It takes about two days for the body to manufacture each red blood
cell, and about two million are turned out every second. Production of
new red blood cells occurs in the bone marrow. hope i helped
