Erythrocytes and Hemoglobin Practice Questions

Question 1

Which factor predominantly influences the rightward shift of the oxygen dissociation curve?

Accepted Answer

2,3-Bisphosphoglycerate (2,3-BPG)

Answer

pH (Bohr effect)

Answer

Temperature increase

Answer

Carbon monoxide levels

Question 2

Which of the following is least likely to cause iron deficiency anemia?

Accepted Answer

Excess of meat in the diet

Answer

Chronic blood loss

Answer

Achlorhydria

Answer

Extensive surgical removal of the proximal small bowel

Question 3

A 59-year-old male came with Hb 18.0 gm/dl on three occasions. The resident doctor wants to exclude Polycythemia Vera. Which of the following is the most relevant investigation :

Accepted Answer

Hematocrit

Answer

Reticulocyte count

Answer

JAK2 V617F mutation testing

Answer

Serum erythropoietin (EPO) levels

Question 4

All are increased in IDA except

Accepted Answer

Transferrin saturation

Answer

TIBC

Answer

Soluble transferrin receptor

Answer

Erythropoietin

Question 5

What is the most immediate hematological adaptation that occurs during high-altitude exposure to improve oxygen delivery to tissues?

Accepted Answer

Increased 2,3-BPG levels

Answer

Increased red blood cell mass

Answer

Reduced erythropoietin production

Answer

Increased white blood cell count

Question 6

Which of the following dissociation curve mentioned is for myoglobin?

Accepted Answer

Green

Answer

Purple

Answer

Red

Answer

None

Question 7

A pregnant woman is able to transfer oxygen to her fetus because fetal hemoglobin has a greater affinity for oxygen than does adult hemoglobin. Why is the affinity of fetal hemoglobin for oxygen higher?

Accepted Answer

Fetal hemoglobin binds 2,3-BPG with fewer ionic bonds than the adult form.

Answer

There is less 2,3-BPG in the fetal circulation as compared to maternal circulation

Answer

The tense form of hemoglobin is more prevalent in the circulation of the fetus

Answer

The oxygen-binding curve of fetal hemoglobin is shifted to the right.

Question 8

CO poisoning causes which type of hypoxia?

Accepted Answer

Anemic hypoxia

Answer

Hypoxic hypoxia

Answer

Stagnant hypoxia

Answer

Histotoxic hypoxia

Question 9

Which factor has the most significant influence on the oxygen dissociation curve?

Accepted Answer

2,3-BPG

Answer

pH

Answer

Temperature

Answer

All of these

Question 10

The most specific test to detect blood stains is:

Accepted Answer

Spectroscopic test

Answer

Benzidine test

Answer

Teichmann's test

Answer

Orthotoluidine test

Erythrocytes and Hemoglobin — MCQs

Erythrocytes and Hemoglobin — MCQs

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