Medical MCQs

5099 MCQs  (Page 207 of 510)

Leprosy bacilli are transmitted from person to person by all except______________?
A. Dischange from nasal mucosa
B. From open sore
C. Through intact skin
D. Through breast milk
Lancefields classification of B hemolytic streptococcus is based on______________?
A. M protein
B. Polysaccharide c antigen
C. Type of lipid in cell membrane
D. Physiological properties
Chlamydia causes all of the following except________________?
A. Trachoma
B. Non-gonococcal urethritis
C. Pneumonia
D. Parotitis
All of the following organisms are known to survive intracellularly except_____________?
A. Neisseria meningitides
B. Salmonella typhi
C. Streptococcus pyogenes
D. Legionella pneumophila
Bacteria acquire characteristics by all the following except_______________?
A. Through plasmids
B. Incorporating part of host dna
C. Through bacteriophages
D. Through conjugation
Borrelia vincenti is always associated with______________?
A. Spirochaetes
B. Fusiform bacilli
C. Treponema vincenti
D. None of the above
Negative staining is used to demonstrate________________?
A. Bacterial spore
B. Bacterial flagella
C. Bacterial capsule
D. Bacterial fimbriae
The most common pathogens responsible for nosocomial pneumonias in the ICU are______________?
A. Gram positive organisms
B. Gram negative organisms
C. Mycoplasma
D. Virus infections
Test for differentiating virulent form non-virulent tubercular bacilli_____________?
A. Aryl sulphatase test
B. Niacin test
C. Neutral red test
D. Catalase peroxidase test