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

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

Options:

Correct Answer: Type O

Exam Year: 2019

Solution:

Type O blood is known as the universal donor because it lacks A and B antigens, making it safe for transfusion to any blood type.

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

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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