MYCOBACTERIUM QUIZ

Humans become infected with Mycobacterium tuberculosis most frequently by

ingestion

contact

inoculation

inhalation

TRUE ANSWER : ?
YOUR ANSWER : ?

False negative Mantoux test is observed in

All of these

Advanced tuberculosis

Severe malnutrition

early tuberculosis

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following species of Mycobacterium is positive for nitrate reduction test?

All of these

M fortuitum

Mycobacterium tuberculosis

M chelonei

TRUE ANSWER : ?
YOUR ANSWER : ?

The bacteria which is microaerophilic on primary isolation, is

M fortuitum

none of these

M bovis

Mycobacterium tuberculosis

TRUE ANSWER : ?
YOUR ANSWER : ?

A positive Mantoux test indicates an area of induration of

10 mm or more in diameter

4-9 mm in diameter

1-4 mm in diameter

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The bacteria which cause(s) tuberculosis in man is/are

Mycobacterium tuberculosis

M bovis

All of these

M africanum

TRUE ANSWER : ?
YOUR ANSWER : ?

Culture of tubercle bacilli may be positive if number of bacteria in the specimen is

as few as 10-100 per ml

as few as 5-9 per ml

as few as 125-200 per ml

as few as 1-4 per ml

TRUE ANSWER : ?
YOUR ANSWER : ?

Members of the genus Mycobacterium are

gram-positive

acid-fast

all of these

non-motile

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following bacteria is sensitive to pyrazinamide?

M bovis

Mycobacterium tuberculosis

None of these

M fortuitum

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the phage types of Mycobacterium tuberculosis occurs most frequently in India?

Type B

Type A

Type I

Type C

TRUE ANSWER : ?
YOUR ANSWER : ?

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