Question

An individual has ‘O’ blood group if his/her blood sample (a) clumps only when antiserum A is added (b) clumps only when antiserum B is added (c) clumps when both antiserum A and antiserum B are added (d) does not clump when either antiserum A or antiserum B is added Select the correct answer from above options Science questions and answers, Science questions pdf, Science question bank, Science questions and answers pdf, mcq on Science pdf,Science book pdf,Science pdf notes,Science lecture notes,Science of light,maxwell Science,Science proposed by,electromagnetic theory engineering physics,Science nptel

Answer 1

Answer is : (d) does not clump when either antiserum A or antiserum B is added An individual has ‘O’ blood group if his/her blood sample does not clump when either antiserum ‘A’ or antiserum ‘B’ is added. Antiserum is a blood serum containing antibodies against specific antigens. Clumping or Agglutination is the process that occurs if an antigen is mixed with its corresponding antibody. A person with ‘O’ blood group neither have ‘A’ nor ‘B’ antigens on his/her red blood cells, but both ‘a’ and ‘b’ antibodies in his/her plasma. Thus, they are also called as universal donor.