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Bacteria anh Gram staining- Part 1
See all quizzes of Bacteria anh Gram staining- Part 1 here:
1 Cold like symptoms are caused by which
bacteria
a. Pseudomonas
b. E.coli
c. Haemophilus influenza
d. Haemophilus streptococcus
2. In Streptococcus fecalis, the conjugation
takes place at
a. Pili b. Cell membrane
c. Cell wall d. Flagella
3. The infected mad dogs may contain
a. Nergi bodies b. Niagri bodies
c. Negri bodies d. Neisser bodies
4. What disease the Nesser will produce?
a. Mumps b. Rubella
c. Polio d. Measles
5. Rancidity in spoiled foods is due to
a. Lipolytic organisms
b. Proteolytic organisms
c. Toxigenic microbes
d. Saccharolytic microbes
6. The Baterium that is most commonly used
in genetic engineering is
a. Escherichia b. Klebsiella
c. Proteius d. Serratia
7. The functions of plasmid are
a. DNA replication
b. Protein synthesis
c. Cell wall synthesis
d. None of the above
8. 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
9. The etiologic agent of botulism is a
a. Neurotoxin b. Endotoxin
c. Enterotoxin d. All of the above
10. The bacterial cells are at their metabolic
peak during
a. Lag phase b. Log
c. Stationary d. Decline
11. Protein particles which can infect are
called
a. Virons b. Prions
c. Nucleoida d. None of these
12. In most of purple bacteria, the light
harvesting centers are
a. B 850 & Fe-S b. B 850 & B 875
c. B 845 & B 875 d. B 850 & B830
13. Endotoxin produced by gramnegative
bacteria is present in
a. Peptidoglycan b. Lippolysacharide
c. Theichoic acid d. Inner membrane
14. Which one of the following was Gramnegative,
chemolithotrophic bacteria?
a. Siderococcus b. E.coli
c. Spirellum d. Mycoplasms
15. The mode of reproduction which occurs
in mycoplasma is
a. Budding b. Bursting
c. Binary fission d. Binary fusion
16. Which one of the following is about
Herpes viruses?
a. Icosahedral, with envelope, ds DNA
b. Polyhedral with envelope, ds DNA
c. RNA, helical with envelope
d. ds DNA, brick shape
17. Which one of the following produce
typical fried egg appearance colonies on
solid media?
a. Mycobacteria b. Mycoplasts
c. Mycoplasms d. Bacteroides
18. An organism that is osmophilic and has
a specific requirements for sodium
chloride resembles
a. Halophile b. Basophile
c. Barophile d. Xerophile
19. A population of cells derived from a single
cell are called
a. Monclonal cells b. Clones
c. Protoplasts d. Sub culture
20. Hetrolactic acid bacteria produce
a. Lactic acid only
b. Lactic acid + H2O + CO2
c. Lactic acid + CO2
d. Lactic acid + alchohol + CO2
21. In which of the follwing microorganism,
conjunction tube was not produced
during conjunction process?
a. Thiobaillus thiooxidence
b. T. ferroxidance
c. Tetrahymena thermophila
d. Cryptaporiclium
22. Which of the following is most similar to
Rickettsia and Chlamydia?
a. Bdellovibrio b. Clostridium
c. Mycobacterium d. Mycoldaima
23. How would you distinguish pseudomonas
species from E-cloi?
a. Gram staining
b. Morphology
c. Glucose fermentation Vs Respiration
d. All of the above
24. Which of the following is pathogenic to
humans?
a. Spirogyra b. Cephaleuros
c. Prototheca d. Both b and c
25. Tumer inducing plasmids are extensively
used in production of
a. Avirulent phases
b. Single cell proteins
c. Transgenic plants
d. Nitrogen fixing bacteria
26. The viruses that live as parasites on bacteria
are
a. Fungi b. Commensels
c. Bacteriophages d. None of these
27. The anthrax disease is most frequently
infected from
a. Cattle b. Sheeps
c. Rats d. Both a and b
28. The colonies produced by Pseudomonas
on Mac Conkey’s medium are
a. Purple colored b. Pink colored
c. Pale colored d. Green colored
29. Staining material of gram positive
bacterium is
a. Fast green b. Haematoxylon
c. Crystal violet d. Safranin
30. The pigment present in red algae is
a. Rhodochrome
b. Fucoxanthin
c. Chlorophyll only
d. Chlorophyll + phycobilin
