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 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.

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

Blood group B means the person

  1. Can form antibody for B

  2. Cannot form antibody for B

  3. Can receive blood of AB group

  4. Cannot receive blood group O.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Individuals with blood group B have B antigens on their red blood cells; therefore, 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

Problem related to Rh factor arias when $Rh^+$ and $Rh^-$ bloods mix up

  1. In test tube

  2. Through transfusion

  3. Through pregnancy

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

Rh incompatibility causes clinical problems primarily through two routes: blood transfusion (Rh- recipient receives Rh+ blood) and pregnancy (Rh- mother carrying Rh+ fetus). Of the options given, transfusion is directly stated as correct. While pregnancy also causes Rh problems, the question specifically asks about 'bloods mix up', which most directly refers to transfusion.

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

In which of the following situations, there is risk of erythroblastosis foetalis

  1. Mother $Rh^+$, father $Rh^+$
  2. Mother $Rh^-$, father $Rh^-$
  3. Mother $Rh^-$, father $Rh^+$
  4. Mother $Rh^+$, father $Rh^-$.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Erythroblastosis foetalis occurs when an Rh-negative mother carries an Rh-positive fetus, leading to maternal antibody production against fetal red blood cells.