Which type of blood group is known as universal donor?

  1. A
  2. B
  3. AB
  4. O negative

Answer (Detailed Solution Below)

Option 4 : O negative
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Detailed Solution

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The correct answer is O negative.

Do not confuse with blood group O positive answer, we have provided the link below for better understanding. 

Important Points

  • People with O negative blood group are considered universal donors. RBC's which they contain do not have  A, B, or Rh antigens.
  • People who have a blood group of AB positive are considered as a universal recipient. Those people who have AB positive blood group have an absence of antibodies to A, B, or Rh in their blood.
  • There are four major blood groups: A, B, O, and AB. Blood groups are classification as blood, they are classified on the presence and absence of antibodies and other antigens on the surface of Red blood cells.
  • You can see through this link

https://www.redcrossblood.org/donate-blood/blood-types.html#:~:text=AB-, Group%20O%20can%20donate%20red%20blood%20cells%20to%20anybody.,cells%20to%20B's%20and%20AB's.

Additional Information 

  • Blood is composed of four components: White blood cells, Red blood cells, plasma, and platelets.
  • Red blood cells are red in colour due to the presence of Hemoglobin, which is an iron-containing protein.
  • When viruses or bacteria enter the blood, then White blood cells help in fighting infections.
  • Blood Plasma is a yellowish liquid component of blood that helps in the transportation of nutrients like minerals, protein, vitamins, sugars, and fats to all parts of the body.

F1 Alka Singh Anil 11.12.20    D5

We can see that O- is compatible to donate every other group.

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