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

A child has blood group B. Mother has blood group A. The blood group of the father would be

  1. O

  2. O or A

  3. B or AB

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

Child is B (genotype BO or BB). Mother is A (genotype AO or AA). To have a B child, the father must provide a B allele. Thus, the father could be B (BO or BB) or AB.

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

In ABO system of blood grouping, transfusion is not possible from

  1. A to AB

  2. B to AB

  3. O to AB

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

Transfusion from A to O is not possible because O individuals have anti-A antibodies in their plasma, which would react with the A antigens 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

The genotype of B-group father of an O-group child is

  1. $I^O I^O$
  2. $I^B I^B$
  3. $I^A I^B$
  4. $I^O I^B$.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A child with blood group O has genotype OO. If the father is blood group B, he must be heterozygous (genotype BO, represented as I^O I^B) to pass on the O allele to the child.

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

Which of the following chemicals can be used as anticoagulant?

  1. Sodium chloride

  2. Sodium citrate

  3. Sodium nitrate

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

Sodium citrate is a common anticoagulant used in blood collection because it chelates calcium ions, which are necessary 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

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.