1 - A 6 year old boy comes with abdominal pain, vomiting after consuming mild products within 6 hours. The most likely organism responsible is______________?
1 - A 6 year old boy comes with abdominal pain, vomiting after consuming mild products within 6 hours. The most likely organism responsible is______________?
Staph. aureus
2 - A diabetic patient developed cellulitis due to staphylococcus aureus, which was found to be Methicillin resistant on the antibiotic sensitivity testing. All of the following antibiotics will be appropriate EXCEPT________________?
2 - A diabetic patient developed cellulitis due to staphylococcus aureus, which was found to be Methicillin resistant on the antibiotic sensitivity testing. All of the following antibiotics will be appropriate EXCEPT________________?
Imipenem
3 - A full course of immunization agianst. Telanus with 3 doses to Tetanus toxoid, confers immunity for how many years ?
3 - A full course of immunization agianst. Telanus with 3 doses to Tetanus toxoid, confers immunity for how many years ?
10
4 - A protoplast is best characterized as a bacterial cell______________?
4 - A protoplast is best characterized as a bacterial cell______________?
Free of a cell wall and a capsule
5 - A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ?
5 - A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ?
Brucella spp
6 - About Psedomonas. All are true except________________?
6 - About Psedomonas. All are true except________________?
Infection is mostly due to endogenous source
7 - Actinomycetes is______________?
7 - Actinomycetes is______________?
Gram positive bacteria
8 - Actinomycosis is a_________________?
8 - Actinomycosis is a_________________?
Anaerobic bacterial disease
9 - Actinomycosis is caused by______________?
9 - Actinomycosis is caused by______________?
Anaerobic, gram positive, non-acid fast bacteria.
10 - All are true about bordetella pertussis except______________?
10 - All are true about bordetella pertussis except______________?
Presence of antibodies in serum in diagnostic of the disease
11 - All are true about legionella pneumophilia except______________?
11 - All are true about legionella pneumophilia except______________?
Person to person transmission
12 - All are true about widel test except________________________?
12 - All are true about widel test except________________________?
O antibodiest last longer and hence is not indicative of recent infection
13 - All of the following are true of streptococcus except_____________?
13 - All of the following are true of streptococcus except_____________?
It's group of lactic acid production bacteria
14 - All of the following lab tests can be used to distinguish streptococcus mutans from other oral streptococci, except______________?
14 - All of the following lab tests can be used to distinguish streptococcus mutans from other oral streptococci, except______________?
Gram staining
15 - All of the following organisms are known to survive intracellularly except_____________?
15 - All of the following organisms are known to survive intracellularly except_____________?
Streptococcus pyogenes
16 - Among The infectious diseases transmitted by food, one is___________________?
16 - Among The infectious diseases transmitted by food, one is___________________?
Typhoid fever
17 - An oxidase-positive, gram-negative rod which produces a bluish-green pigment has been grown in culture from a swab obtained from an infected burn wound. This organism is susceptible to gentamicin, ticarcillin and tobramicin, but resistant to all the other
17 - An oxidase-positive, gram-negative rod which produces a bluish-green pigment has been grown in culture from a swab obtained from an infected burn wound. This organism is susceptible to gentamicin, ticarcillin and tobramicin, but resistant to all the other
Pseudomonas aeruginosa
18 - Anaerobic bacteria grow_______________?
18 - Anaerobic bacteria grow_______________?
in the absence of oxygen
19 - Antigen used in Weil-Felix reaction______________?
19 - Antigen used in Weil-Felix reaction______________?
Proteus
20 - ASO (Antistreptolysin 0) test is uesd for the diagnosis of________________?
20 - ASO (Antistreptolysin 0) test is uesd for the diagnosis of________________?
Rheumatie fever
21 - Bacteria acquire characteristics by all of the following except___________________?
21 - Bacteria acquire characteristics by all of the following except___________________?
Incorporating part of host DNA
22 - Bacteria acquire characteristics by all the following except_______________?
22 - Bacteria acquire characteristics by all the following except_______________?
Incorporating part of host DNA
23 - Bacteria reproduce mainly by______________?
23 - Bacteria reproduce mainly by______________?
Binary fission
24 - Bacteria with potent exotoxin is_______________?
24 - Bacteria with potent exotoxin is_______________?
Clostridium tetani
25 - Black pigmented anaerobes include all of the following except______________?
25 - Black pigmented anaerobes include all of the following except______________?
Buccae
26 - Borelia vincenti is a______________?
26 - Borelia vincenti is a______________?
Spirochaete
27 - Borrelia vincenti is always associated with______________?
27 - Borrelia vincenti is always associated with______________?
Fusiform bacilli
28 - cAMP reaction is shown by which streptococci ?
28 - cAMP reaction is shown by which streptococci ?
Group B
29 - Causative agents of Vincent's angina_____________?
29 - Causative agents of Vincent's angina_____________?
Borrelia vincenti and fusobacterium fusiformis
30 - Causative organism for gas gangrene_______________?
30 - Causative organism for gas gangrene_______________?
Clostridium welchii
31 - Chlamydia causes all of the following except________________?
31 - Chlamydia causes all of the following except________________?
Parotitis
32 - Common inhabitant of throat and tonsils is______________?
32 - Common inhabitant of throat and tonsils is______________?
Alpha hymolytic streptococci (S. viridans)
33 - Commonest mycobacterial infection in tropical countries_______________?
33 - Commonest mycobacterial infection in tropical countries_______________?
M. tuberculosis
34 - Cough plate method is used to identify________________?
34 - Cough plate method is used to identify________________?
Pertussis
35 - Culture medium for corynebacterium diphtheria______________?
35 - Culture medium for corynebacterium diphtheria______________?
Loefflers serum slope
36 - Culture medium used for Bordatella pertussis is_________________?
36 - Culture medium used for Bordatella pertussis is_________________?
Bordet Gengou medium
37 - Diphtheria is pathogenic only when infected with______________?
37 - Diphtheria is pathogenic only when infected with______________?
Beta phage
38 - Drumstick appearance is seen in______________?
38 - Drumstick appearance is seen in______________?
Cl. tetani
39 - Each of the following can cause food poisoning except________________?
39 - Each of the following can cause food poisoning except________________?
Cl. difficile
40 - Each of the following viruses possesses an outer lipoprotein envelope except_____________?
40 - Each of the following viruses possesses an outer lipoprotein envelope except_____________?
Papilloma Virus
41 - Electron microscopic examination of the bacterial flora of necrotising ulcerative gingivitis indicates the presence of microorganisms within non-necrotic tissues in advance of other bacteria. The organisms involved are______________?
41 - Electron microscopic examination of the bacterial flora of necrotising ulcerative gingivitis indicates the presence of microorganisms within non-necrotic tissues in advance of other bacteria. The organisms involved are______________?
Spirochetes
42 - Encapsulation in bacteria helps in__________________?
42 - Encapsulation in bacteria helps in__________________?
Prevent their phagocytosis
43 - Endotoxin have all but one of the properties given below_______________?
43 - Endotoxin have all but one of the properties given below_______________?
Produced by gram positive bacteria
44 - False +ve for VDRL is seen in______________?
44 - False +ve for VDRL is seen in______________?
All of the above
45 - Fimbriae are demonstrated by ___________________?
45 - Fimbriae are demonstrated by ___________________?
Haemagglutination test
46 - Following are the characteristics of Vincent's angina EXCEPT_______________?
46 - Following are the characteristics of Vincent's angina EXCEPT_______________?
Caused by leptospira interrogans
47 - For uniform staining reaction, morphology and biochemical activity it is advisable to study bacterial cultures during the_____________?
47 - For uniform staining reaction, morphology and biochemical activity it is advisable to study bacterial cultures during the_____________?
Logarithmic phase
48 - Gram -ve bacteria stain during gram staining____________?
48 - Gram -ve bacteria stain during gram staining____________?
Red color
49 - Granules in the corynebacterium diphtheria are called by following names, except______________?
49 - Granules in the corynebacterium diphtheria are called by following names, except______________?
Refractile granules
50 - Grape bunch shaped colonies are seen in______________?
50 - Grape bunch shaped colonies are seen in______________?
Staphylococcus
51 - Group A B-hemolytic streptococcal infection of the pharynx may be followed in some by_____________?
51 - Group A B-hemolytic streptococcal infection of the pharynx may be followed in some by_____________?
Rheumatic fever
52 - Group A carbohydrate of Str. pyogenes cross reacts with human_________________?
52 - Group A carbohydrate of Str. pyogenes cross reacts with human_________________?
Cardiac valves
53 - Growth factor needed for Salmonella_________________?
53 - Growth factor needed for Salmonella_________________?
Tryptophan
54 - In a patient with typhoid, diagnosis after 15 days of onset of fever is best done by_____________?
54 - In a patient with typhoid, diagnosis after 15 days of onset of fever is best done by_____________?
Widal test
55 - In initial stages of tyhoid, salmonella can be detected in________________?
55 - In initial stages of tyhoid, salmonella can be detected in________________?
Blood
56 - In small intestine, cholera toxin acts by______________?
56 - In small intestine, cholera toxin acts by______________?
ADP – ribosylation of the G regulatory protein
57 - In T.B cell mediated immunity is by_______________?
57 - In T.B cell mediated immunity is by_______________?
CD 4*
58 - Inactivated microorganisms are used in the manufacture of which of the following________________?
58 - Inactivated microorganisms are used in the manufacture of which of the following________________?
Salk vaccine
59 - Lancefields classification of B hemolytic streptococcus is based on______________?
59 - Lancefields classification of B hemolytic streptococcus is based on______________?
Polysaccharide C antigen
60 - Lepromin test is useful for________________?
60 - Lepromin test is useful for________________?
Prognosis
61 - Leprosy bacilli are transmitted from person to person by all except______________?
61 - Leprosy bacilli are transmitted from person to person by all except______________?
Through breast milk
62 - Leprosy bacilli can be grown in_________________?
62 - Leprosy bacilli can be grown in_________________?
Foot paid on nine branded armadilo
63 - Leptospirosis, all are true except______________?
63 - Leptospirosis, all are true except______________?
Onset of IgM in 2 days
64 - Loss of capsule in bacteria is generally associated with______________?
64 - Loss of capsule in bacteria is generally associated with______________?
Decease in virulence
65 - Malignant pustule is referred to_________________?
65 - Malignant pustule is referred to_________________?
Cutaneous anthrax
66 - Mycobacterium tuberculosis is differentiated from other atypical mycobacteria by______________?
66 - Mycobacterium tuberculosis is differentiated from other atypical mycobacteria by______________?
Niacin test
67 - Nagglers reaction detects________________?
67 - Nagglers reaction detects________________?
Lecithinase
68 - Nagglers reaction is used in the diagnosis of______________?
68 - Nagglers reaction is used in the diagnosis of______________?
Gas gangrene
69 - Negative staining is used to demonstrate________________?
69 - Negative staining is used to demonstrate________________?
Bacterial fimbriae
70 - Neurotoxin of tetanus acts on______________?
70 - Neurotoxin of tetanus acts on______________?
Spinal card
71 - On a stained slide, clostridium tetani has the appearance of a__________________?
71 - On a stained slide, clostridium tetani has the appearance of a__________________?
Drum stick
72 - One of the following is a treponemal test for diagnosis of syphilis_____________?
72 - One of the following is a treponemal test for diagnosis of syphilis_____________?
FTAB
73 - One of the following is a zoonotic disease_____________?
73 - One of the following is a zoonotic disease_____________?
Anthrax
74 - One of the following is an agglutination test in the diagnosis of typhoid___________?
74 - One of the following is an agglutination test in the diagnosis of typhoid___________?
Widal test
75 - Opacity around colonies of Clostridium perfringens is due to_________________?
75 - Opacity around colonies of Clostridium perfringens is due to_________________?
Lecithinase
76 - Organ of locomotion in bacteria is________________?
76 - Organ of locomotion in bacteria is________________?
Flagella
77 - Organism most frequently associated with urinary tract infections is_________________?
77 - Organism most frequently associated with urinary tract infections is_________________?
Escherichia coli
78 - Pasteur developed the vaccine for_______________?
78 - Pasteur developed the vaccine for_______________?
All of the above
79 - Pathogenesis of diphtheria is attributed to__________________?
79 - Pathogenesis of diphtheria is attributed to__________________?
Exotoxin
80 - Pathogenic treponemas can be maintained in________________?
80 - Pathogenic treponemas can be maintained in________________?
Rabbit testis only
81 - Phage conversion is required for________________?
81 - Phage conversion is required for________________?
Diptheria
82 - Phospholipid used to investigate syphilis by the reagin test is________________?
82 - Phospholipid used to investigate syphilis by the reagin test is________________?
Cardiolipin
83 - Pneumococus can be differentiated from streptococcus by________________?
83 - Pneumococus can be differentiated from streptococcus by________________?
Bile solubility
84 - Pseudomonas aeruginosa_________________?
84 - Pseudomonas aeruginosa_________________?
Causes Shangai fever
85 - Rapid diagnosis of Tuberculosis is possible with_______________?
85 - Rapid diagnosis of Tuberculosis is possible with_______________?
Auramine-Rhodamine stain
86 - Resistance of Staphylococcus aureus is due to ________________________?
86 - Resistance of Staphylococcus aureus is due to ________________________?
Elaboration of an enzyme that destroy penicillin
87 - Rickettsiae__________________?
87 - Rickettsiae__________________?
All of the above
88 - Salivary peroxidise system is known to be effective agianst________________?
88 - Salivary peroxidise system is known to be effective agianst________________?
Lactobacillus acidophilus
89 - Salmonella typhi can be isolated at different times from______________?
89 - Salmonella typhi can be isolated at different times from______________?
All of the above
90 - Signs of tyhoid fever is/are_____________________?
90 - Signs of tyhoid fever is/are_____________________?
All of the above
91 - Silver impregnation method of staining is useful to demonstrate_____________?
91 - Silver impregnation method of staining is useful to demonstrate_____________?
Both of the above
92 - Staphylococcal food poisoning includes the following features_______________?
92 - Staphylococcal food poisoning includes the following features_______________?
Common with dairy products
93 - Staphylococcal toxic shock syndrome (SSS syndrome) is due to______________?
93 - Staphylococcal toxic shock syndrome (SSS syndrome) is due to______________?
Enterotoxin F
94 - Staphylococci typically occur in_________________?
94 - Staphylococci typically occur in_________________?
Irregular clusters
95 - Staphylococcus does not causes_______________?
95 - Staphylococcus does not causes_______________?
Scarlet fever
96 - Streptococcus is classified based on__________________?
96 - Streptococcus is classified based on__________________?
Cell wall carbohydrate
97 - Subacute bacterial endocarditis is caused by_____________?
97 - Subacute bacterial endocarditis is caused by_____________?
Streptococcus viridans
98 - Teichoic acid is present in cell walls of_________________?
98 - Teichoic acid is present in cell walls of_________________?
Gram positive bacteria
99 - Test for differentiating virulent form non-virulent tubercular bacilli_____________?
99 - Test for differentiating virulent form non-virulent tubercular bacilli_____________?
Neutral red test
100 - The bacterial cell wall has all of the following properties except______________?
100 - The bacterial cell wall has all of the following properties except______________?
It is a unique flexible plastic structure
101 - The causative organism of syphilis is___________?
101 - The causative organism of syphilis is___________?
Treponema pallidum
102 - The commonest method of detection of diptheria carriers is_______________?
102 - The commonest method of detection of diptheria carriers is_______________?
Schick test
103 - The commonly used fluorescent dye in the detection of tubercie bacilli________________?
103 - The commonly used fluorescent dye in the detection of tubercie bacilli________________?
Auramine and Rhodamine
104 - The diagnosis of gonorrhea is established by_____________?
104 - The diagnosis of gonorrhea is established by_____________?
All of the above tests
105 - The diagnostic investigation for syphilis is__________________?
105 - The diagnostic investigation for syphilis is__________________?
Both B & C
106 - The difference between gram positive and negative bacteria lies in their_______________?
106 - The difference between gram positive and negative bacteria lies in their_______________?
cell wall
107 - The facultative anaerobic bacteria are those who are_______________?
107 - The facultative anaerobic bacteria are those who are_______________?
Able to grow in the presence of absence of oxygen
108 - The following are applicable to bacterial genoms except________________?
108 - The following are applicable to bacterial genoms except________________?
Its DNA has both introns and extrons
109 - The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?
109 - The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?
Conjugation
110 - The major intestinal pathogens which are non-lactose fermenters are_________________?
110 - The major intestinal pathogens which are non-lactose fermenters are_________________?
Salmonella
111 - The mechanism of genetic transfer where a phage serves as a vehicle is_______________?
111 - The mechanism of genetic transfer where a phage serves as a vehicle is_______________?
Lysogeny
112 - The most common pathogens responsible for nosocomial pneumonias in the ICU are______________?
112 - The most common pathogens responsible for nosocomial pneumonias in the ICU are______________?
Gram negative organisms
113 - The most common site where organisms are present in a typhoid carrier is______________?
113 - The most common site where organisms are present in a typhoid carrier is______________?
Gall Bladder
114 - The most frequently encountered clostridial species in gas gangrene is______________?
114 - The most frequently encountered clostridial species in gas gangrene is______________?
Clostridium welchii
115 - The most primitive mode of gene transfer occurs by____________?
115 - The most primitive mode of gene transfer occurs by____________?
Conjugation
116 - The single most important laboratory test for determining the virulence of staphylococci is___________?
116 - The single most important laboratory test for determining the virulence of staphylococci is___________?
Detection of coagulase
117 - The specific test for Treponema pallidum is___________?
117 - The specific test for Treponema pallidum is___________?
TPHA
118 - The structure in involved in bacterial attachment to cell surface is_______________?
118 - The structure in involved in bacterial attachment to cell surface is_______________?
Fimbria
119 - The temperature required for cultivating mycobacterium________________?
119 - The temperature required for cultivating mycobacterium________________?
37 degrees
120 - The urine sample of a patient has been sent to the laboratory to look for Leptospira. The specimen is to be screened by use of the__________________?
120 - The urine sample of a patient has been sent to the laboratory to look for Leptospira. The specimen is to be screened by use of the__________________?
Dark ground microscope
121 - The virulence factors of Neisseria gonorrhea include all of the following except____________?
121 - The virulence factors of Neisseria gonorrhea include all of the following except____________?
M-Proteins
122 - Thumb print appearance in culture film smear is seen______________?
122 - Thumb print appearance in culture film smear is seen______________?
Bordetelia pertussis
123 - Toxic shock syndrome is due to the following virulence factor_____________?
123 - Toxic shock syndrome is due to the following virulence factor_____________?
Pyrogenic exotoxin
124 - True about VDRL test________________?
124 - True about VDRL test________________?
All of the above
125 - Tuberculin test screens for_____________?
125 - Tuberculin test screens for_____________?
Cell mediated immunity
126 - Vibrio cholera was discovered by_________________?
126 - Vibrio cholera was discovered by_________________?
Koch
127 - Virulence of Gonococcus is due to___________________?
127 - Virulence of Gonococcus is due to___________________?
Pili
128 - Wasserman test test is diagnostic of__________________?
128 - Wasserman test test is diagnostic of__________________?
Syphilis
129 - What is the transport medium for cholera___________________?
129 - What is the transport medium for cholera___________________?
B & C
130 - Which is not true about vibrio cholera_________________?
130 - Which is not true about vibrio cholera_________________?
Cannot survive in extracellular environment
131 - Which of the following are non-spore forming anaerobic bacteria that asume major significance in disease processes________________?
131 - Which of the following are non-spore forming anaerobic bacteria that asume major significance in disease processes________________?
All of the above
132 - Which of the following characteristics of bacteria is not true?
132 - Which of the following characteristics of bacteria is not true?
Having either DNA or RNA
133 - Which of the following enzyme is required to induce the formation of a plasma clot pathogenic staphylococci_____________?
133 - Which of the following enzyme is required to induce the formation of a plasma clot pathogenic staphylococci_____________?
Coagulase
134 - Which of the following fulfil all the criterias of kich's postulates ?
134 - Which of the following fulfil all the criterias of kich's postulates ?
None of the above
135 - Which of the following have the capability to produce extra cellular polysaccharides______________?
135 - Which of the following have the capability to produce extra cellular polysaccharides______________?
Strep. Mutans
136 - Which of the following is an acid-fast bacillus_____________?
136 - Which of the following is an acid-fast bacillus_____________?
Mycobacterium bacilli
137 - which of the following is anaerobic_______________?
137 - which of the following is anaerobic_______________?
Bacteroides
138 - Which of the following is obligate aerobe ?
138 - Which of the following is obligate aerobe ?
Pseudomonas aerogenosa
139 - Which of the following is true about tetanus acquired through traumatic wound ?
139 - Which of the following is true about tetanus acquired through traumatic wound ?
Clostridium tetani travels via the nerves to the anterior horn dells in spinal cord
140 - Which of the following structures, found external to the bacterial cell wall, are involved in bacterial attachment to cell surfaces?
140 - Which of the following structures, found external to the bacterial cell wall, are involved in bacterial attachment to cell surfaces?
Pili
141 - Which organism causes prosthetic valve endocarditis within 60 days of surgery________________?
141 - Which organism causes prosthetic valve endocarditis within 60 days of surgery________________?
Staphylococcus epidermis
142 - Which regards to temperature requirement, most pathogenic bacteria are_____________?
142 - Which regards to temperature requirement, most pathogenic bacteria are_____________?
Mesophiles
143 - Widal test is specific for____________?
143 - Widal test is specific for____________?
Typhoid
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