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What is the average lifespan of a red blood cell?

Practice Questions

Q1
What is the average lifespan of a red blood cell?
  1. 120 days
  2. 30 days
  3. 60 days
  4. 90 days

Questions & Step-by-Step Solutions

What is the average lifespan of a red blood cell?
  • Step 1: Understand what a red blood cell is. It is a type of cell in your blood that carries oxygen.
  • Step 2: Learn that red blood cells are produced in the bone marrow.
  • Step 3: Know that once red blood cells are made, they enter the bloodstream.
  • Step 4: Find out that red blood cells have a lifespan, which is how long they live before they are removed from the body.
  • Step 5: Discover that the average lifespan of a red blood cell is about 120 days.
  • Step 6: Realize that after 120 days, red blood cells are recycled by the body.
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