Top 1000+ Solved Microbiology MCQ Questions Answer
Q. Aspergillus niger is used generally for theproduction of
a. Ethanol
b. Penicillin
c. Citric acid
d. Lactic acid
Q. In the citric acid production, the pH to bemaintained in the fernmenter is
a. 7.0
b. 5.0 to 6.0
c. 8.0 to 9.0
d. 1.0 to 6.0
Q. The penicillin produced in large scalesubmerged fermentations are
a. Penicillin-A
b. Penicillin-D
c. Penicillin-G
d. None of these
Q. The strain of fungi used for the large scaleproduction of penicillin is
a. Penicillium chrysogenum
b. P-notatum
c. Streptomyces Aurecus
d. Saccharomyces sps
Q. 6-amino penicillic acid is prepared frompenicillin sps by
a. Acylase
b. Punicillin acylase
c. Penicillinone
d. None of these
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