1. Bacteria without cell Wall
a. Chlamydia
b. Rickettsia
c. Mycoplasma
d. Spirochetes
2. Obligatory Aerobic Bacteria
a. Grow in presence of oxygen traces and 5 – 10% CO2
b. Grow in either presence or absence of oxygen.
c. Grow only in presence of oxygen
d. Grow only in absence of oxygen
3. Brucella Melitensis is
a. Obligatory aerobic bacteria
b. Obligatory anaerobic bacteria
c. Facultative anaerobic bacteria
d. Micro-aerophilic bacteria
4. Function of cell membrane
a. Giving the shape to bacteria
b. Carrying somatinc antigen
c. Excretion of hydrolytic exo-enzymes and toxins
d. Protect the bacteria from plasmolysis
5. Pseudomonas aeroginosa is
a. Peri-trichous bacteria
b. Lopho-trichous bacteria
c. Amphi-trichous bacteria
d. Monotrichous bacteria
6. Short rods, motile by single polar flagellum :
a. Lactobacillus
b. Spirochaeta
c. Vibrio
d. Streptococcus
7. Genetic information of bacteria is carried on
a. Messenger RNA
b. Transfer RN|A
c. Transcript RNA
d. Double – Stranded DNA
8. Thermophilic bacteria grow at
a. 60 – 80°C
b. 0 - 20°C
c. 37°C
d. 100 - 120°C
9. Acidophilic bacteria grow at
a. pH 7.2 – 7.4
b. pH 5.0 – 5.5
c. pH 8.5 – 9.0
d. None of the above
10. Mycoplasma is
a. Neutrophilic bacteria
b. Acidophilic bacteria
c. Basophilic bacteria
d. All of the above
11. It is the adaptation of bacteria to the fresh medium
a. Lag phase
b. Decline phase
c. Logarithmic Phase
d. Stationary phase
12. Bacteria which do not cause hemolysis is
a. Beta-Hemolytic
b. Alpha-Hemolytic
c. Gama Hemolytic
d. None of the above
13. Normal flora of Lower intestine is all of the following except:
a. Staphylococci
b. Diphtheroids
c. Shigella
d. Lactobacillus
14. Opportunistic pathogens are all of the following except:
a. Cause a disease when the host defense are suppressed.
b. Are normal flora of healthy body
c. Are greatly harmful
d. Do not invade the body or tissue.
15. It is circulation of bacterial toxins in blood
a. Pyaemia
b. Toxemia
c. Bacteremia
d. Septicemia
16. Inhibit the growth of micro-organisms
a. Germicidal
b. Germistatic
c. Pathogenicity
d. Virulence
17. For disinfection of mattresses :
a. Hot air oven
b. Autoclave
c. Ethylene Oxide
d. Hydrogen Peroxide
18. For sterilization of serum :
a. Autoclave
b. Boiling
c. Steaming
d. Filtration
19. Obligatory Anaerobic bacteria:
a. Clostridium Tetani
b. Salmonella
c. M. Tuberculosis
d. E-coli
20. Pyschrophilic bacteria grow at:
a. 100°C
b. 60°C
c. 14°C
d. 37°C
21. Bacteria which contain chlorophyll
a. Heterotrophic bacteria
b. Autotrophic bacteria
c. Photosynthetic bacteria
d. All of the above
22. Selective media for fungi is:
a. Sabouraud’s dextrose agar
b. Lowenstein – Jensen Media
c. Loeffler’s media
d. Chocolate agar
23. Tricophyton is one of
a. Yeast
b. Moulds
c. Dermatophyte
d. Dimorphic Fungi.
24. Plastomyces is one of
a. Dermatophytes
b. Dimorphic Fungi
c. Yeast
d. Moulds
25. Mechanism of action of penicillin:
a. Inhibit protein synthesis
b. Inhibit Folic acid pathway
c. Inhibit peptidoglycan cross – linking
d. Block peptidoglycan synthesis
26. Antibiotics which inhibit DNA synthesis:
a. Rifampin
b. Quinolones
c. Sulfonamides
d. Tetracylines
27. Color of gram negative bacteria is
a. Violet
b. Green
c. Red
d. Black
28. Acid Fast Bacteria
a. Salmonella
b. Shigella
c. M. Tuberculosis
d. E – Coli
29. Vibrio Cholera is:
a. Neutrophilic Bacteria
b. Acidophilic Bacteria
c. Basophilic Bacteria
d. All of the above
30. Spherical or avoid cells occurring in chains
a. Staphylococci
b. Streptococci
c. Lactobacillus
d. Spiro chaeta
31. All are Prokaryotic cells except:
a. Fungi
b. Bacteria
c. Chlamydia
d. Mycoplasma
32. Viruses:
a. Contain only DNA or RNA
b. They Contain ribosome
c. Did not affected by antibiotics
d. a+c
33. All of these are essential structure except:
a. Nuclear body
b. Spores
c. Cell wall
d. Plasma Membrane
34. ______________ is giving the shape to the bacteria
a. Cytoplasmic Membrane
b. Capsule
c. Cell Wall
d. All of the above
35. One of its functions is selective permeability
a. Cell wall
b. Plasma membrane
c. Capsule
d. Spores
36. They are responsible for Haemagglutination Phenomenon
a. Flagella
b. Fimbria
c. Capsule
d. Cell wall
37. Clostridium Tetani is:
a. Atrichous bacteria
b. Mono-trichous bacteria
c. Amphi-trichous bacteria
d. Peri-trichous bacteria
38. Short curved or straight rods, motile by single polar flagellum
a. spirochaeta
b. Vibrio
c. Escherichia
d. Lactobacillus
39. Small gram negative cocci, occur in pairs
a. staphylococcus
b. streptococcus
c. neisseria
d. non of the above
40. Transfer of genetic information from one bacterium to another by bacteriophages is:
a. Transformation
b. Tansduction
c. Conjugation
d. Mutation
41. Toxoplasma gondii can be diagnosed by
(a) Sabin-Feldman
(b) Giemsa stain
(c) Widal test
(d) Stool culture
42. Leishmania is transmitted by
(a) Flea
(b) Mosquitoe
(c) Sand fly
(d) Snake bite
43. The following is true about chlamydia except
(a) Obligate intracelluar parasite
(b) Gram negative bacteria
(c) Bacteria without cell well
(d) They have both DNA and RNA
44. The bacteria that arranged in chain is called
(a) Staphylococcus
(b) Streptococcus
(c) Spiral
(d) Comma
45. The following is accessary structural of bacteria except
(a) Cytoplasmic membrane
(b) Capsule
(c) Flagella
(d) Spores
46. The main function of flagella are-------except
(a) Help in diagnosis of bacteria
(b) Essential for motility
(c) Protect bacteria from phagocytosis
(d) Carrying flagella antigen
47. Genetic information can be transfered by --------- except
(a) Isolation
(b) Transformation
(c) Transduction
(d) Conjugation
48. Bacteria that able to grow in temperature -20c is called
(a) mesophilic
(b) Acidophlic
(c) Psychrophilic
(d) Thermophilic
49 Bateria growth curve include ----------except
(a) Log phase
(b) Photosynthetic
(c) Stationary
(d) Death
50. Routine bacteria stain is include
(a) Methylene blue
(b) Gram stain
(c) Indian ink
(d) Leishman
51- Bacteria which contain chlorophyll
a. Heterotrophic bacteria
b. Autotrophic bacteria
c. Photosynthetic bacteria
d. All of the above