BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
CARDIOVASCULAR SYSTEM
| Question 
 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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 Which of the following blood groups is known as the universal donor? 
|  |  A 
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|  |  B 
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|  |  AB 
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|  |  O 
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 Explanation: 
Detailed explanation-1: -Group O can donate red blood cells to anybody. It’s the universal donor.
Detailed explanation-2: -In an emergency situation where a patient’s blood type is unknown, type O negative blood is the only blood type that is safe to use. The reason is that it is compatible with all blood types. Type O negative is known as the universal blood type.
Detailed explanation-3: -Those with O positive blood can only receive transfusions from O positive or O negative blood types. Type O positive blood is one of the first to run out during a shortage due to its high demand.
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