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

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'

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

A boy has the blood group 0. What is true of the inheritance of this blood group in his case?

  1. His mother should be with AB blood group

  2. Both his parents could be heterozygous A group

  3. His father could be homozygous B group

  4. His mother could be homozygous A group
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If the boy has blood group o, both his parents could probably be heterozygous A group, $I^AI^O$, in both the parents.

So, the correct option is 'Both his parents could be heterozygous A group'.

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

Rh factor was discovered by

  1. Landsteiner and Weiner

  2. William Harvey

  3. Malpighi

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

Rh factor is an independent antigen present on the RBC irrespective of the presence of Antigen A or B. This factor is passed down from genus Rhesus macaque  (monkey) to humans and is regarded as the Rh factor it was discovered by Landsteiner and Weiner.

so, the correct answer is 'Landsteiner and Weiner'

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

A child's blood group is `O'. The parents blood groups cannot be

  1. AB and 0

  2. B and 0

  3. A and B

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

A child with blood group O has the genotype ii, meaning they must inherit one i allele from each parent. Parents with AB (genotype IAIB) cannot pass on an i allele, so they cannot have an O child.

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

A woman of blood group O' presented a baby of blood groupO' which she claimed as her child. She brought a suit against a man of 'AB' group as the father of the child. 

Which statement is correct as per your judgement

  1. The father and mother claimed are the true persons

  2. Father is true and mother is not the true person

  3. Both the parentage claims are false

  4. Mother is the true person and father claimed is not true
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A mother with blood group O (ii) can only have a child with blood group O if the father provides an i allele. A man with blood group AB (IAIB) does not possess the i allele and therefore cannot be the biological father of an O child.