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
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
Cough plate method is used to identify:
A. Y. pestis
B. Pertussis
C. Mycoplasma
D. M-Tuberculosis
cAMP reaction is shown by which streptococci:
A. Group A
B. Group B
C. Group C
D. Group D
The mechanism of genetic transfer where a phage serves as a vehicle is:
A. Transduction
B. Translation
C. Lysogeny
D. Conjugation
Fimbriae are demonstrated by:
A. Culture
B. Gram stain
C. Biochemical reaction
D. Haemagglutination test
Phospholipid used to investigate syphilis by the reagin test is:
A. Cardiolipin
B. Plasminogen
C. Palmityl lecithin
D. Serine
