http://bvns.net/search/shenzhenga.cn PG NEET Microbiology MCQs 10 – General Microbiology

follow url 1.All the following are methods if phenotypic typing except

  1. plasmid profile analysis
  2. phage typing
  3. bacteriocin typing
  4. biotyping

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here 2. Bacterial resistance to antibiotics is most commonly transmitted to

  1. transformation
  2. transduction
  3. conjugation
  4. plasmid

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Tramadol Overnight American Express 3. Syphilis was discovered in which year

  1. 1838
  2. 1905
  3. 1906
  4. 1921

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http://geomore.com/wp-cron.php?doing_wp_cron=1553300704.1361899375915527343750 4. Germ theory was proposed by

  1. pasteur
  2. koch
  3. landsteiner
  4. lister

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Tramadol Mastercard Overnight 5. Which of the following is true about plasmid

  1. they may confer drug resistance
  2. they may code for capsular synthesis
  3. they are extrachromosomal genetic elements
  4. all the other answers are right

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Tramadol Order Overnight Shipping 6. All are Koch’s postulates except

  1. a microorganism should be constantly associated with the lesion of the disease
  2. the bacteria should be isolated in pure culture from the lesion
  3. inoculation of such pure culture into lab animals should produce that lesion
  4. administration of broad-spectrum antibiotics should cure the disease and the lesion

Ans (4)

7. Acid-fast bacilli are stained by

  1. Ziehl Neelsen
  2. Albert
  3. neisser
  4. Ponder

Ans (1)

8. The plasmid is most commonly transmitted to other bacteria by

  1. transformation
  2. transduction
  3. conjugation
  4. All the other answers are right

Ans (3)

9. Not used in gram staining

  1. methylene blue
  2. crystal violet
  3. iodine
  4. saffarine

Ans (1)

10. RTF is

  1. responsible for the transfer of multiple drug resistance
  2. same as R factor
  3. responsible for nontransferable drug resistance
  4. All the other answers are right

Ans (1)

11. Indian ink stain is used to stain which of the following bacteria

  1. pneumococcus
  2. staphylococcus
  3. meningococcus
  4. gonococcus
  5. enterococcus

Ans (1,3)

12. Nonsense codons are/is

  1. UAA
  2. UAG
  3. UGA
  4. all the others are right

Ans (4)

13. Corynebacterium diphtheria is also called

  1. koch’s bacillus
  2. kelb lofflers’ bacillus
  3. roux bacillus
  4. yersin bacillus

Ans (2)

14. Which of the following about gram staining is most right

  1. heating is done to promote entry of stain into the cell wall of both gram positive and gram negative bacteria
  2. if observed staining technique and microscopy before decolorization both gram +ve and gram -ve bacteria appear same
  3. teichoic acid id present in the cell wall of gram -ve bacteria
  4. all are right

Ans (2)

15. Which of the following processes occurs by a bacteriophage

  1. transformation
  2. transduction
  3. transcription
  4. conjugation

Ans (2)

16. Leeuwenhoek is associated with

  1. telescope
  2. microscope
  3. stains
  4. immunization

Ans (2)

17. Which event takes place in the lag phase of the growth curve

  1. bacterial cell number increases
  2. bacterial cell size increases
  3. sporulation
  4. all the above

Ans (2)

18. Transmission of drug resistance was first found in which organism

  1. shigella
  2. salmonella typhi
  3. Vibrio cholera
  4. Escheria coli

Ans (1)

19. Theory of web of causation was given by

  1. Mc Mohan and Pugh
  2. Pettenkoffer
  3. John snow
  4. Loius Pasteur

Ans (1)

20. Which of the following is microaerophilic

  1. campylobacter
  2. vibrio
  3. bacteroides
  4. pseudomonas

Ans (1)

21. DNA can be transferred from one bacterium to another by a number of processes. Uptake by a recipient cell of soluble DNA released from a donor cell is defined as which one of the following?

  1. competence
  2. conjugation
  3. recombination
  4. transformation

Ans (4)

22. Best chemical disinfectant to disinfect stethoscope is

  1. isopropyl alcohol
  2. ethylene oxide
  3. halogenated compounds
  4. steam plasma sterilization

Ans (1)

23. The term cultivable not viable is used for

  1. M leprae
  2. M tuberculosis
  3. T pallidum
  4. salmonella
  5. staphylococcus

Ans (1,3)

24. F factor integrates with bacterial chromosome to form

  1. HFr
  2. RTF+r
  3. F-
  4. RTF

Ans (1)

25. Which is not a prokaryote

  1. mycoplasma
  2. rickettsiae
  3. shigella
  4. entamoeba

Ans (4)

26. Population doubling time in coliform bacteria is

  1. 20 sec
  2. 20 min
  3. 20 hours
  4. 20 days

Ans (2)

27. Conjugation does not involve

  1. bacteriophages
  2. HFr
  3. F+
  4. plasmids

Ans (1)

28. Swarming is seen in

  1. Clostridium tetani
  2. Clostridium perfringens
  3. Clostridium botulinum
  4. Clostridium difficile

Ans (1)

29. Phototropism means

  1. growing towards sunlight
  2. obtaining energy from sunlight
  3. reflecting energy from the light source
  4. none of the answers are right

Ans (2)

30. The role of plasmids in conjugation was first described by Lederberg and Tatum in

  1. H influenzae
  2. corneybacterium
  3. pseudomonas
  4. E coli

Ans (4)

31. Which is a eukaryote

  1. mycoplasma
  2. bacteria
  3. fungus
  4. chlamydia

Ans (3)

32. Which organism grows in alkaline ph

  1. klebsiella
  2. vibrio
  3. pseudomonas
  4. E coli

Ans (2)

33. The discovery of gene transformation came from the study of the following bacteria

  1. Bacillus subtilis
  2. Streptococcus pyogenes
  3. Streptococcus pneumonia
  4. E coli

Ans (3)

34. Role of the bacterial capsule is

  1. support
  2. transport
  3. antiphagocytic
  4. adhesions

Ans (3,4)

35. The obligate intracellular organism is

  1. mycoplasma
  2. chlamydia
  3. cryptococcus
  4. helicobacter

Ans (2)

36. Viral genomes integrated into the bacterial genomes are known as

  1. prophage
  2. temperate phage
  3. bacteriophage
  4. metaphage

Ans (1)

37. Capsulated organism is

  1. candida
  2. klebsiella
  3. proteus
  4. cryptococcus
  5. histoplasmosis

Ans (2,4)

38. True about exotoxins

  1. LPS in nature
  2. heat stable
  3. nonantigenic
  4. toxoid can be prepared

Ans (4)

39. The second step in most genetic engineering experiments is

  1. screening
  2. cleavage of DNA
  3. production of recombinant DNA
  4. cloning

Ans (3)

40. Which is not present in gram-negative bacteria

  1. peptidoglycan
  2. teichoic acid
  3. LPS
  4. porin channels

Ans (2)

41. All the following are true about exotoxin except

  1. highly antigenic
  2. heat stable
  3. neutralised by antibody
  4. active in very minute doses

Ans (2)

42. The strength of magnification of oil immersion lens is

  1. 10X
  2. 100X
  3. 40X
  4. 50X

Ans (2)

43. Craigie’s tube method is used to differentiate

  1. motile and nonmotile strains
  2. virulent and avirulent strains
  3. capsulated and noncapsulated strains
  4. rough and smooth strains

Ans (1)

44. All the following are true about endotoxins except

  1. neutralized by specific antibodies
  2. heat stable
  3. somatic antigen
  4. poorly antigenic

Ans (1)

45. In grams stain the mordant is

  1. tannic acid
  2. Loeffler’s medium
  3. gram’s iodine
  4. bovine’s fixative

Ans (3)

46. Factor affecting electron microscope is

  1. eyepiece
  2. wavelength of light
  3. type of glass lens used
  4. the thickness of sample used

Ans (4)

47. The following culture media is

Image result for nutrient agar

  1. peptone water
  2. nutrient agar
  3. blood agar
  4. chocolate agar

Ans (2)

48. Which of the following is used for staining bacterial endospores

  1. Loeffler’s methylene blue with safferine as a counterstain
  2. malachite green with safferine as a counterstain
  3. crystal violet with safferine as a counterstain
  4. giemsa with safferine as a counterstain

Ans (2)

49. What is the reason for decolorization in the gram-negative organism in Gram’s stain

  1. due to the two dyes used in staining
  2. lipid content
  3. cell membrane integrity
  4. teichoic acid

Ans (2)

50. The composition of ZN stain are all except

  1. basic fuchsin
  2. acid fuchsin
  3. phenol
  4. alcohol

Ans (2)

 

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