Tag: blood groups and compatibility advance

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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.

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

Which blood group is universal donor

  1. $O^+$
  2. $O^-$
  3. $AB^+$
  4. $AB^-$.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood group O negative (O-) is considered the universal donor because it lacks A, B, and Rh antigens on the surface of its red blood cells. This prevents the recipient's immune system from attacking the donated blood.

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

What is true of blood group B

  1. The person can form antibody b

  2. The person cannot form antibody b

  3. The person cannot be given blood of 'O' group

  4. The person can receive blood of AB group.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Individuals with blood group B possess B antigens on their red blood cells and naturally produce anti-A antibodies. They do not produce anti-B antibodies, as doing so would cause their own blood to agglutinate.

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

The natural antibodies in the plasma of a person with blood group 'O' is

  1. anti-A

  2. anti-B

  3. anti-A and anti-B

  4. anti-B and anti-D

  5. anti-D.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

People with blood group O lack both A and B antigens on their red blood cells. Consequently, their plasma contains both anti-A and anti-B antibodies.

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

Clumping of RBC may occur when blood of one person is mixed with serum or blood of another person. This is due to

  1. Antigen-antibody reaction

  2. Antitoxin-antibody reaction

  3. Antigen-antigen reaction

  4. Antibody-antibody reaction
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The RBC membrane contains either antigen A or antigen B, or both Antigen A and B or no antigen at all, accordingly the blood is classified as blood group A , B , AB and O respectively. The blood plasma of blood group A will have antibodies for B, that of B will have antibodies for A,  that of AB will have non, while that of O will have both the antibodies. If blood is transfused at random this will lead to antigen-antibody reaction - like if A is the blood group of the recipient while the blood group of the donor happens to be B, this will lead to clumping of the RBCs.

So, the correct answer is 'Antigen-antibody reaction'

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

Anti-A and Anti-B antibodies are not found in which of the following blood group?

  1. AB

  2. A

  3. O

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

The cell membrane of RBCs in AB blood group contain both antigen A as well as antigen B therefore the blood plasma does not contain antibody A and Antibody B, to prevent the coagulation of blood cells due to antigen-antibody reactions.

So, the correct answer is 'AB'