Tag: compatibility of blood groups

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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

Husband and wife should know their Rh factors because the situation can be serious due to biological incompatibility in one of the following cases

  1. $Rh^+$ husband and $Rh^+$ wife
  2. $Rh^-$ husband and $Rh^-$ wife
  3. $Rh^-$ husband and $Rh^+$ wife
  4. $Rh^+$ husband and $Rh^-$ wife.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rh incompatibility occurs when an Rh-negative mother carries an Rh-positive fetus. This can lead to the mother developing antibodies against the Rh antigen, which may affect subsequent pregnancies.

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

In case of emergency (e.g., serious accident with great blood loss) which blood group could be safely transfused

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

Individuals with O Rh-negative blood are universal donors because their red blood cells lack both A and B antigens and the Rh factor, minimizing the risk of an immune reaction in the recipient.

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

A man with blood group A marries AB blood group woman. Which type of progeny indicate that the man is not homozygous?

  1. AB

  2. B

  3. A

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

A man with blood group A can have genotype AA or AO. If he is AO and marries an AB woman (genotypes A and B), they can produce a child with blood group B (genotype BO). If he were AA, he could only produce A or AB children.

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

Person with AB blood group can

  1. Not receive universally

  2. Universally donate

  3. Universally receive

  4. Receive only from O.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

People with blood group AB possess both A and B antigens on their red blood cells but lack anti-A and anti-B antibodies in their plasma, allowing them to receive blood from any ABO group.

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

Parents with blood groups O and AB cannot have AB child as

  1. Gene for O is dominant over gene for B

  2. Gene for O is dominant over gene for A

  3. Genes for A and B are absent in one of the parents

  4. Gene for A or B is absent in one of the parents.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A parent with blood group O has the genotype OO. A parent with blood group AB has the genotype AB. The child must inherit an O from the first parent, making it impossible for the child to have the genotype AB.

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

Which one is the common anticoagulant used for preserving blood?

  1. Sodium hydroxide

  2. Sodium chloride

  3. Sodium oxalate

  4. Sodium bicarbonate.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sodium oxalate and sodium citrate are common anticoagulants used in blood collection tubes because they bind calcium ions, which are essential for the blood clotting cascade.

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

Donor X and recipient Y belong to same blood group. Transfusion has led to RBC agglutination because

  1. X is $Rh^+$, Y is $Rh^-$
  2. X is $Rh^-$, Y is $Rh^+$
  3. Both are $Rh^+$
  4. Both are $Rh^-$.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Agglutination occurs when the recipient has antibodies against the donor's antigens. An Rh-negative recipient (Y) can develop anti-Rh antibodies if exposed to Rh-positive blood from the donor (X).

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

$Rh^-$ mother carries $Rh^+$ foetus. The foetus is at risk of disease called

  1. Haemophilia

  2. Haemolytic disease

  3. Tuberculosis

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

When an Rh-negative mother is exposed to Rh-positive fetal blood, she produces antibodies that can cross the placenta and destroy fetal red blood cells, a condition known as haemolytic disease of the newborn.