Everyday Science
NULL
Medium
Question
The lifespan of red blood cells is __________ days?
A
60
B
120
✓ Official correct answer
C
180
D
240
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
60
No member explanations yet for this option.
B
120
No member explanations yet for this option.
C
180
No member explanations yet for this option.
D
240
No member explanations yet for this option.
Explanation
Human RBCs typically live about 120 days.
So the correct answer is 120.
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