• STI College (multiple campuses)

• MEDICINE ADTCSHP

Direction: Choose the correct answer in each
question.
1. Bacteria that produce a cluster of flagella at both
poles are termed
A. Monotrichous
B. amphitrichous
C. Lophotrichous
D. peritrichous
2. Capsule serves as virulence factor because it is
A. Slippery when wet
B. antiphagocytic
C. additional targets for antibody
production
D. B & C only
3. What structure provides the bacterium with its
shape, rigidity and resistance to osmotic pressure
differences between the environment & the
cytoplasm?
A. Capsule
B. cell wall
C. inclusion body
D. ribosomes
4. The log phase is the period in which
A. Cell division rates decrease & the rate of
cell death begins to match cell division
B. Cells do not divide, but may increase in
size to two- to threefold; they also actively
synthesize DNA & proteins necessary for
division
C. Cell number doubles at a regular
phase
D. The death rate increases exponentially
until a very low population is reached.
5. What are the standard conditions for operation of
an autoclave to sterilize instruments, media or
biohazardous wastes?
A. 100 degC for 5 minutes at 14 psi
B. 160 -170 degC for 15 mins at 14 psi
C. 121 degC for 15 mins at 15 psi
D. 115 degC for 21 mins at 21 psi
6. Bacteria that produce leukocidins are considered
more pathogenic because they :
A. Destroy the host’s wbc’s
B. Allow the organism to spread through
connective tissues
C. enhance attachment of the bacteria to
body tissue
D. clot plasma to form a protective coat of
fibrin
7. Laboratories in which work is done with
indigenous or exotic agents with a potential for
respiratory transmission & that may cause serious
and potentially lethal infection belong to which safety
level?
A. BSL 1
B. BSL 2
C. BSL 3
D. BSL 4
8. What is the specimen of choice in cases of
pharyngitis?
A. Expectorated sputum
B. tongue scrapings
C. swab of throat exudate
D. lesion scab