A. Four polypeptide chains, 2α, 1β,1Υ chain
B. Four heme molecules and four polypeptide chains
C. Four heme molecules, 2α and 2β chains
D. One heme and one globin molecule
Related Mcqs:
- Mandibular anterior division nerve has______________?
A. One sensory and all motor branches
B. One motor and all sensory branches
C. All motor branches
D. All sensory branches - Infectious mononucleosis has______________?
A. Multiple draining sinuses
B. Ulcers which bruise easily
C. Palatal perforation
D. Alveolar bone loss - Hemoglobin is the major buffer in blood, bicarbonate ions diffuse out of erythrocyte into plasma in exchange of_______________?
A. Potassium
B. Phosphate
C. Carbonic acid
D. Chloride ion - Infants acquire adult hemoglobin level at_____________?
A. Birth
B. End of 1st year
C. Puberty
D. 4 years - The hemoglobin % of a normal newborn is______________?
A. 8
B. 12
C. 10
D. 30 - Embryonic hemoglobin is composed of________________?
A. Gamma and beta
B. Epsilon and gamma
C. Alpha and beta
D. Gamma and alpha - What effect does hyperventilation have on the oxygen binding affinity of hemoglobin ?
A. P50 and oxygen affinity decrease
B. P 50 and oxygen affinity increase
C. P 50 decreases and the oxygen affinity increases
D. P50 increase and the oxygen affinity decreases - At PH 7 the binding of 2,3 DPG to hemoglobin occurs at which site ?
A. Sulphydryl group
B. Carboxy terminal
C. Amino terminal
D. Histidine - Which of the following is correct about breakdown of hemoglobin (Hb)_____________?
A. Hb→Heme→bilirubin→Urobilinogen
B. Heme→Hb→Biliverdin→Urobilinogen
C. Hb→Heme→Bilverdin→Uro bilinogen
D. Hb→Heme→bilirubin→Urobilinogen→Biliverdin - A patient reports with dyspnoea on slight exertion. He also has multiple petechial spots and spontaneous hemorrhage. His RBC count is less than one lakh/mm3 His hematocrit and hemoglobin is low. Most probable diagnosis is______________?
A. Pernicious anemia
B. Thalassemia
C. Aplastic anemia
D. Sprue
