Medical MCQs

5099 MCQs  (Page 475 of 510)

Hemoglobin has______________?
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
Embryonic hemoglobin is composed of________________?
A. Gamma and beta
B. Epsilon and gamma
C. Alpha and beta
D. Gamma and alpha
Prothrombin time is useful for_______________?
A. Detection of clot retraction
B. Platelet count
C. In hemophilia
D. For evaluation in a patient taking anticoagulant drugs
Bacteria are most commonly ENGULFED by _________________?
A. Neutrophilic leukocytes
B. Large granular lymphocytes
C. Small lymphocytes
D. Killer cells