Tag: bio-chemistry

Quizzes (82) Questions (1918)

Questions Related to bio-chemistry

Multiple choice bio-chemistry immunity and blood groups blood group blood groups and compatibility advance blood groups and transfusion compatibility of blood groups

Blood corpuscles containing both A and B antigens are mixed with another blood serum. The blood corpuscles agglutinated. Blood serum belongs to blood group

  1. A

  2. B

  3. AB

  4. O.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

If blood corpuscles with both A and B antigens (AB group) are agglutinated by a serum, that serum must contain both anti-A and anti-B antibodies, which is characteristic of blood group O.

Multiple choice bio-chemistry immunity and blood groups blood group blood groups and compatibility advance blood groups and transfusion compatibility of blood groups

For safe blood transfusion

  1. Donor's RBC should not contain antibodies against recipient's serum

  2. Recipient's serum should not contain antigens against donor's antibodies

  3. Recipient's serum should not contain antibodies against RBC of donors

  4. Recipient's RBC should not contain antibodies against donor's antigens.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For a safe transfusion, the recipient's plasma must not contain antibodies that react with the antigens present on the donor's red blood cells.

Multiple choice bio-chemistry immunity and blood groups blood group blood groups and compatibility advance blood groups and transfusion compatibility of blood groups

A mismatch during transfusion of blood causes

  1. Agglutination

  2. Erythroblastosis

  3. Haemopoies

  4. None of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A mismatch in blood transfusion leads to the binding of antibodies to antigens on the donor's red blood cells, causing them to clump together, a process known as agglutination.

Multiple choice bio-chemistry immunity and blood groups blood group blood groups and compatibility advance blood groups and transfusion compatibility of blood groups

Assertion. Blood group 'O' has both anti-A and anti-B antibodies
Reason. It does not have any antigen

  1. A

  2. B

  3. C

  4. D.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood group O lacks both A and B antigens on its red blood cells, which is why it contains both anti-A and anti-B antibodies in the plasma. Both the assertion and reason are correct and the reason explains the assertion.

Multiple choice bio-chemistry immunity and blood groups blood group blood groups and compatibility advance blood groups and transfusion compatibility of blood groups

If the foetus is Rh (+) ve and the mother is Rh (-) ve, then

  1. Foetus will transmit blood toxin to mother

  2. Foetus will transmit antibody to mother's blood

  3. Foetus is attacked by antibodies of mother's blood

  4. Foetus is attacked by antigen of mother's blood
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In Rh incompatibility, maternal antibodies against the Rh antigen cross the placenta and attack the fetal red blood cells, leading to their destruction.