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Which blood type is known as the universal donor? (2019)

Practice Questions

Q1
Which blood type is known as the universal donor? (2019)
  1. Type A
  2. Type B
  3. Type AB
  4. Type O

Questions & Step-by-Step Solutions

Which blood type is known as the universal donor? (2019)
  • Step 1: Understand that blood types are classified based on the presence of certain antigens (A and B) on the surface of red blood cells.
  • Step 2: Know that there are four main blood types: A, B, AB, and O.
  • Step 3: Recognize that Type O blood does not have A or B antigens.
  • Step 4: Since Type O blood lacks these antigens, it can be given to people with any blood type without causing an immune reaction.
  • Step 5: Conclude that Type O blood is called the universal donor because it is safe for transfusions to all other blood types.
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