Microbiology Mcqs

Organ of locomotion in bacteria is________________?

• (A)  Fimbria
• (B)  Flagella
• (C)  Capsule
• (D)  Cell wall

Answer

Submitted By :Ali Uppal

For uniform staining reaction, morphology and biochemical activity it is advisable to study bacterial cultures during the_____________?

• (A)  Lag phase
• (B)  Death phase
• (C)  Stationary phase
• (D)  Logarithmic phase

Answer

Submitted By :Ali Uppal

One of the following is a treponemal test for diagnosis of syphilis_____________?

• (A)  FTAB
• (B)  Widal test
• (C)  Wasserman test
• (D)  Kahn test

Answer

Submitted By :Ali Uppal

The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?

• (A)  Conjugation
• (B)  Rarefaction
• (C)  Transduction
• (D)  Transformation

Answer

Submitted By :Ali Uppal

The virulence factors of Neisseria gonorrhea include all of the following except____________?

• (A)  Outer membrane proteins
• (B)  IgA Protease
• (C)  M-Proteins
• (D)  Pili

Answer

Submitted By :Ali Uppal

In a patient with typhoid, diagnosis after 15 days of onset of fever is best done by_____________?

• (A)  Blood culture
• (B)  Widal test
• (C)  Stool culture
• (D)  Urine culture

Answer

Submitted By :Ali Uppal

Staphylococci typically occur in_________________?

• (A)  Pairs
• (B)  Chains
• (C)  Tetrads
• (D)  Irregular clusters

Answer

Submitted By :Ali Uppal

One of the following is an agglutination test in the diagnosis of typhoid___________?

• (A)  Widal test
• (B)  Eleks test
• (C)  Mantoux test
• (D)  Wasserman test

Answer

Submitted By :Ali Uppal

The causative organism of syphilis is___________?

• (A)  Borrelia burgolorferi
• (B)  Chalamydia trachomatis
• (C)  Leptospira interrogans
• (D)  Treponema pallidum

Answer

Submitted By :Ali Uppal

An oxidase-positive, gram-negative rod which produces a bluish-green pigment has been grown in culture from a swab obtained from an infected burn wound. This organism is susceptible to gentamicin, ticarcillin and tobramicin, but resistant to all the other antibiotics which of the following organisms is it likely to be ?

• (A)  Escherichia coli
• (B)  Klebsiella pnemoniae
• (C)  Proteus miribilis
• (D)  Pseudomonas aeruginosa

Answer

Submitted By :Ali Uppal