Q108: With reference to infections with Escherichia
coli the following are true except ?
A) Enteroaggregative E.coli is associated with Persistent
diarrhoea
B) Enterohemorrhagic E.coli can cause haemolytic uraemic
syndrome
C) Enteroinvasive E.coli produces a disease similar to
salmonellosis
D) Enterotoxigenic E.coli is a common cause of traveler's
diarrhoea
Answer: C) Enteroinvasive E.coli produces a disease similar
to salmonellosis
Q109: The following statements are true regarding
melioidosis except ?
A) It is caused by Burkholderia mallei
B) The agent is a gram negative aerobic bacteria
C) Bipolar staining of the aetiological agent is seen with
methylene blue stain
D) The most common form of melioidosis is pulmonary
infection
Answer: A) It is caused by Burkholderia mallei
Q110: All of the following Vibrio sp. are halophilic,
except ?
A) V.cholerae
B) V.parahaemolyticus
C) V.alginolyticus
D) V.fluvialis
Answer: A) V.cholerae
Q111: All of the following organisms are known to
survive intracellularly except ?
A) Neisseria meningitides
B) Salmonella typhi
C) Streptococcus pyogenes
D) Legionella pneumophila
Answer: C) Streptococcus pyogenes
Q112: The capsule of Cryptococcus neoformans in a
CSF sample is best seen by ?
A) Grams stain
B) India ink preparation
C) Giemsa stain
D) Methanamine - Silver stain
Answer: B) India ink preparation
Q113: Viruses can be isolated from clinical samples
by cultivation in the following except ?
A) Tissue culture
B) Embryonated eggs
C) Animals
D) Chemically defined media
Answer: D) Chemically defined media
Q114: It is true regading the normal microbial flora
present on the skin and mucous membranes that ?
A) It cannot be eradicated by antimicrobial agents
B) It is absent in the stomach due to the acidic pH
C) It establishes in the body only after the neonatal period
D) The flora in the small bronchi is similar to that of the
trachea
Answer: A) It cannot be eradicated by antimicrobial agents
Q115: An army jawan posted in a remote forest area
had fever and headache. His fever was 104°F and pulse was 70 per min. He had
an erythematous lesion of about 1 cm on the leg surrounded by small vesicles,
along with generalized lymphadenopathy at the time of presentation to the
referral hospital. His blood sample was collected to perform serology for the
diagnosis of Rickettsial disease. Which one of the following results in
Weil-felix reaction will be diagnostic in this clinical setting ?
A) High OX-2
B) High OX-19
C) High OX-K
D) High OX-19 and OX-2
Answer: C) High OX-K
Q116: Adenosine deaminase (enzyme) deficiency is
associated with ?
A) Severe combined immunodeficiency (SCID)
B) X-linked agammaglobulinemia
C) Transient hypogammaglobulinemia of infancy
D) Chronic granulomatous disease
Answer: A) Severe combined immunodeficiency (SCID)
Q117: The serum concentration of which of the
following human IgG subclass is maximum ?
A) IgG1
B) IgG2
C) IgG3
D) IgG4
Answer: A) IgG1
Q118: Chlamydia trachomatis is associated with the
following except ?
A) Endemic trachoma
B) Inclusion conjunctivitis
C) Lymphogranuloma venereum
D) Community acquired pneumonia
Answer: D) Community acquired pneumonia
Q119: The following statements are true regarding
Clostridium perfringens except ?
A) It is the commonest cause of gas gangrene
B) It is normally present in human faeces
C) The principal toxin of C.perfringens is the alpha toxin
D) Gas gangrene producing strains of C.perfringens produce
heat resistant spores
Answer: D) Gas gangrene producing strains of C.perfringens
produce heat resistant spores
Q120: A child was diagnosed to be suffering from
diarrhoea due to Camplyobacter jejuni. Which of the following will be the
correct enviornmental conditions of incubation of the culture plates of the
stool sample ?
A) Temperature of 42°C and microaerophilic
B) Temperature of 42°C and 10% carbondioxide
C) Temperature of 37°C and microaerophilic
D) Temperature of 37°C and 10% carbondioxide
Answer: A) Temperature of 42°C and microaerophilic
Q121: Which one of the following statements is true regarding
Chlamydia pneumoniae ?
A) Fifteen serovars have been identified as human pathogens
B) Mode of transmission is by the airborne bird excreta
C) The cytoplasmic inclusions present in the sputum specimen
are rich in glycogen
D) The group specific antigen is responsible for the
production of complement fixing antibodies
Answer: D) The group specific antigen is responsible for the
production of complement fixing antibodies
Q122: Virus mediated transfer of host DNA from one
cell to another is known as ?
A) Transduction
B) Transformation
C) Transcription
D) Integration
Answer: A) Transduction
Q123: HIV can be detected and confirmed by ?
A) Polymerase Chain Reaction (PCR)
B) Reverse Transcriptase - PCR
C) Real Time PCR
D) Mimic PCR
Answer: B) Reverse Transcriptase - PCR
Q124: In the small intestine, cholera toxin acts by
?
A) ADP-ribosylation of the G regulatory protein
B) Inhibition of adenyl cyclase
C) Activation of GTPase
D) Active absorption of NaCl
Answer: A) ADP-ribosylation of the G regulatory protein
Q124: Which of the following is not a neuroparasite
?
A) Taenia solium
B) Acanthamoeba
C) Naegleria
D) Trichinella spiralis
Answer: D) Trichinella spiralis
