Which of the four blood groups, A, AB, B and O is called universal donor?

examrobotsa's picture

Submitted by examrobotsa on

Q: 304 (SSC/NA)

Which of the four blood groups, A, AB, B and O is called universal donor?

question_subject: 

Science

question_exam: 

SSC

stats: 

0,10,3,10,0,2,1

keywords: 

{'blood groups': [3, 1, 1, 2], 'universal donor': [1, 0, 0, 0], 'ab': [0, 0, 1, 0]}

The correct answer is option 1: O. The blood group O is called the universal donor because individuals with this blood type can donate their blood to people with any other blood type. This is because blood group O does not have the A or B antigens on the surface of its red blood cells. As a result, it does not produce antibodies against the A or B antigens. Therefore, it can be safely transfused to individuals with blood types A, B, AB, or O. In contrast, individuals with blood types A, B, or AB have specific antigens on their red blood cells, which can trigger an immune response if they receive blood from someone with a different blood type. Therefore, blood type O is considered the safest and most widely compatible for blood transfusions.