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Most antigens are……..molecules in blood group systems of human.
a) carbohydrate          
b) protein
c) fat               
d) nucleic acid

b

Explanation: An antigen is any substance that causes your immune system to produce antibodies against it.



Which of the following is/are the main blood group system/s?
a) ABO blood group system  
b) Rh system
c) MNS blood group system              
d) both a and b

d

Explanation: it is because incompatibility between donor and recipient’s blood with respect to these two systems may become dangerous to life



In Rh system, there are……groups.
a) two 
b) three           
c) four
d) six

a

Explanation: Rh positive and Rh negative



A person having blood group Rh+, have……….in his/her blood.
a) Rh-factor and Anti-Rh antibodies are present
b) Rh-factor is present and Anti-Rh antibodies are absent
c) Rh-factor is absent and Anti-Rh antibodies are present
d) Rh-factor and Anti-Rh antibodies are absent

b

A person having blood group Rh negative, have……….in her/his blood.
a) Rh-factor and Anti-Rh antibodies are present
b) Rh-factor is present and Anti-Rh antibodies are absent
c) Rh-factor is absent and Anti-Rh antibodies are present
d) Rh-factor and Anti-Rh antibodies are absent

c

Who can donate blood to Rh positive person in Rh blood group system of human?
a) Rh+                         
b) Rh-
c) both a and b         
d) none of them

c

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