Top 250+ Solved Bacteria and Gram Staining MCQ Questions Answer
Q. In Streptococcus fecalis, the conjugationtakes place at
a. Pili
b. Cell membrane
c. Cell wall
d. Flagella
Q. The infected mad dogs may contain
a. Nergi bodie
b. Niagri bodies
c. Negri bodies
d. Neisser bodies
Q. Rancidity in spoiled foods is due to
a. Lipolytic organisms
b. Proteolytic organisms
c. Toxigenic microbes
d. Saccharolytic microbes
Q. The Baterium that is most commonly usedin genetic engineering is
a. Escherichia
b. Klebsiella
c. Proteius
d. Serratia
Q. The functions of plasmid are
a. DNA replication
b. Protein synthesis
c. Cell wall synthesis
d. None of the above
Q. Mycoplasmas are bacterial cells that
a. Fail to reproduce on artificial meida
b. Have a rigid cell wall
c. Are resistant to penicillin
d. Stain well with Gram’s stain
Q. The etiologic agent of botulism is a
a. Neurotoxin
b. Endotoxin
c. Enterotoxin
d. All of the above
Q. The bacterial cells are at their metabolicpeak during
a. Lag phase
b. Log
c. Stationary
d. Decline
Q. In most of purple bacteria, the light harvesting centers are
a. B 850 & Fe-
b. B 850 & B 875
c. B 845 & B 875
d. B 850 & B830
Q. Endotoxin produced by gramnegativebacteria is present in
a. Peptidoglycan
b. Lippolysacharide
c. Theichoic acid
d. Inner membrane
Q. Which one of the following was Gramnegative, chemolithotrophic bacteria?
a. Siderococcu
b. E.coli
c. Spirellum
d. Mycoplasms
Q. The mode of reproduction which occursin mycoplasma is
a. Budding
b. Bursting
c. Binary fission
d. Binary fusion
Q. Which one of the following is aboutHerpes viruses?
a. Icosahedral, with envelope, ds DNA
b. Polyhedral with envelope, ds DNA
c. RNA, helical with envelope
d. ds DNA, brick shape