‫وزارة التعليم العالي‬
‫جامعة المجمعة‬
‫كلية العلوم الطبية التطبيقية‬
‫قسم علوم المختبرات الطبية‬
Ministry of Higher Education
Majmaah University
College of Applied Medical Sciences
Department of Medical Laboratory
Lecture 5
Name of Instructor: Dr. Mosaab Omar
Location: Majmaah male campus
MCQ:
Please find the proper answer of the following:
1-
Which of the following statements regarding Corynebacterium spp. Are
correct………………
a.
motile
b.
Non spore forming
c.
Capsulated
d.
Facultative anaerobic
e.
Both B and D
2……… .Is the most important member of the group, as it can produce a
powerful exotoxin that causes diphtheria in humans.
a.
Corynebacterium diphtheria
b.
Clostridium
c.
Streptococcus
d.
Listeria
3………………
are
primarily
found
occasionally cause severe disease in humans.
aListeria monocytogenes
in
animals
and
b-
Erysipelothrix rhusiopathiae
c-
Corynebacterium diphtheria
d-
None of them
4-
Corynebacterium species “coryneform bacteria” have a high guanosine
plus cytosine content and include the genera ………..……
a. Corynebacterium
b. arcanobacterium
c. brevibacterium,
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d. mycobacterium
e. All of them
5- In vitro production of this toxin from C diphtheriae depends largely on the
……………………
a- osmotic pressure,
b- amino acid concentration,
c- pH
d- All of them
6- Diphtheria toxin is a heat-labile polypeptide that can be lethal in a dose of
………………….
a- 0.5 μg/kg
b- 0.1 μg/kg
c- 0.7 μg/kg
d-
0.9 μg/kg
7- C.diphtheriae can be differentiated from other Corynebacterium species
by …………………………fermentation of glucose and maltose but not
sucrose with production of acid only
a- fermentation of glucose and maltose
b- fermentation sucrose with production of acid only
c- Fermentation of Lactose
d- None of them
8- The drugs of choice in treatment of diphtheria are …………….
a- penicillin
b- erythromycin
c- Tetracyclines
d- Both A and B
9- L monocytogenes is characterized by…………….
a. facultative anaerobe
b. and is catalase-positive
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c. and motile
d. all of them
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