Solved UPSC CDS/OTA Question
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Q · Circulatory SystemMedium · 45s
What is the average lifespan of a human RBC?
TopicCirculatory System
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Human RBCs have an average lifespan of ~120 days.
Final Answer: Option C - 120 days