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1. Aerosol transmission occurs in :
(A) Mycobacterium tuberculosis
(B) Staphylococcus
(C) Streptococcus
D) E.coli
2. In a native PAGE, proteins are separated on the basis of
:
(A) Net positive charges size
(B) Net negative charge
(C) Net positive charge
(D) Net charge and size
3. Light source used in Uv-Vis spectroscopy :
(A) LASER (B) Xenon lamp (C) Sodium vapour lamp (D) Tungsten lamp
4. Mode of action of β-Lactamases in rendering penicillin
resistance is by :
(A) Preventing access to the target of the antibiotic
(B) Degrading the antibiotic
(C) Altering the antibiotic
(D) Rapidly extruding the antibiotic
5. One cell takes DNA from the other and inserts it into
its chromosome despite the fact that
the two cells are completely unrelated. The procedure is :
(A) Horizontal gene transfer
(B) Transposition
(C) Crossing over of DNA from the two cells
(D) Vertical gene transfer
6. Plasmids are :
(A) Transposons
(B) Chromosome
(C) Accessory genetic information
(D) RNA found in bacterial
cells
7. The study of genomes recovered from natural samples without
first isolating members of the
microbial community and growing them in pure cultures :
(A) Phenomics
(B) Proteomics
(C) Metabolomics
(D) Metagenomics
8. The process used in the laboratory to produce millions
of copies of DNA is :
(A) In situ polymerization
(B) Fluctuation test
(C) Polymerase Chain Reaction (PCR)
(D) Reverse
transcriptase
9. Transposons are :
(A) Jumping genes
(B) Inverted repeat
(C) Insertion sequences
(D) All of the above
10. Which of the following is not a type of centrifugation?
(A) Disk stack separator
(B) Microfiltration
(C) Tubular centrifuge
(D) Hydro cyclone
11. DNA fingerprinting consists of identifying individuals
or organisms by their unique :
(A) A series of clones containing the entire genome of a
microbe
(B) Recombinant microbial cells
(C) Restriction enzyme fragments of DNA molecules
(D) Single-stranded DNA localized on a substrate
12. Which statement is not true regarding difference between
prokaryotes and eukaryotes?
(A) Chromosomes in prokaryotes are circular while linear in
eukaryotes
(B) Polyribosomes are present in prokaryotes but not by
eukaryotes
(C) Cytoplasm is the site of transcription and translation occur in prokaryotes but not in eukaryotes
(D) Prokaryotes have one copy of each gene while eukaryotes have two copies of each gene
13. Homofermentative lactic acid bacteria lacks the enzyme :
(A) Aldolase
(B) Phosphoketolase
(C) Hexose isomerase
(D) All of these
14. Phenylacetic acid is added as a precursor to maximize
the production of antibiotic :
(A) Penicillin G (B) Streptomycin (C) Both (D) None
15. The amino acids lysine and –––––––––– are used in the
food industry as nutritional
supplements in bread products and as flavor enhancing
compounds such as monosodium
glutamate.
(A) Glutamic acid (B) Methionine (C) Valine (D) Phenyl alanine
16. Citric acid is produced by the microorganism :
(A) Rhizopus nigricans (B) Aspergillus niger (C) Acetobacter (D) Lactobacillus
17. Antibiotics and mycotoxins falls under which category of
microbial products :
(A) Primary metabolites (B) Secondary metabolites (C) Both (D) None
18. In continuous culture techniques using chemostat, cell
output is improved by maintain
microorganisms in –––––––––– phase.
(A) Lag (B) Logarithmic (C) Stationary (D) Decline
19. α -amylase is industrially produced from the
microorganism :
(A) Bacillus subtilis
(B) Streptomyces olivaceus
(C) Acetobacter xylinum
(D) Aspergillus flavus
20. An industrial strain or microorganism should ideally
exhibit :
(A) Genetic stability
(B) Safety, non-pathogenicity
(C) Efficient production
(D) All of these
Answers:
1-A | 2-D | 3-B | 4-B | 5-A | 6-C | 7-D | 8-C | 9-D | 10-B |
11-C | 12-B | 13-B | 14-D | 15-A | 16-B | 17-B | 18-B | 19-A | 20-D |