Top 1000+ Solved Microbiology MCQ Questions Answer
Q. Wh ich of the fo l low ing organ ismsrequires tryptophan for growth?
a. H.influenza
b. Vibrio
c. Gonococci
d. S.typhi
Q. Tubercular bacilli grow best in
a. Absence of O2
b. Presence of CO2
c. Presence of O2
d. None of these
Q. Growth curve does not include followingphases of bacteria –
a. Decline phase
b. Stationary phase
c. Lag phase
d. Synchronous growth
Q. Bacteria are more sensitive to antibioticsat which phase of growth curve?
a. Decline phase
b. Stationary phase
c. Lag phase
d. Log phase
Q. Which one of the following mutagens actonly on replicating DNA?
a. Ethidium bromide
b. Nitrosogeranidine
c. Acridine orange
d. None of above
Q. Which of the following is an example ofRNA virus?
a. SV 40
b. T4 phage
c. Tobacco mosaic virus
d. Adeno virus
Q. Genomic DNA is extracted, broken into fragments of reasonable size by a restriction endonuclease and then inserted into a cloning vector to generate chimeric vectors. The cloned fragments are called
a. Clone
b. Genomic library
c. mRNA
d. None of these
Q. In which medium the hydridoma cells grow selectively?
a. Polyethylene glycol
b. Hypoxanthine aminopterin thyminine
c. Hypoxathing-guaning phosphoribosyl transferase
d. Both b and c
Q. The enzymes which are commonly usedin genetic engineering are
a. Exonuclease and ligase
b. Restriction endonuclease and polymerase
c. Ligase and polymerase
d. Restriction endonuclease and ligase
Q. A successful hybridoma was produced by fusing
a. Plasma cells and plasmids
b. Plasma cells and myeloma cells
c. Myeloma cells and plasmids
d. Plasma cells and bacterial cells
Q. The technique involved in comparing the DNA components of two samples is known as
a. Monoclonal antibody techniques
b. Genetic finger printing
c. Recombinant DNA technology
d. Polymerase chain reaction