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Medical Microbiology I Question Paper
Medical Microbiology I
Course:Bachelor Of Science In Nursing And Public Health
Institution: Kenyatta University question papers
Exam Year:2009
KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2009/2010
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
SCIENCE (NURSING AND PUBLIC HEALTH)
HNS 109:
MEDICAL MICROBIOLOGY I
DATE: Wednesday, 30th December, 2009
TIME: 2.00 p.m. – 4.00 p.m.
------------------------------------------------------------------------------------------------------------
INSTRUCTIONS:
• Answer ALL questions in Sections A, B and C.
• Draw neatly labeled diagrams where necessary.
SECTION A:
Multiple Choice Questions (20 x 1 = 20 Marks)
1.
Puerperal sepsis can occur as a consequence of:
a)
Decontamination of mid-wife’s hands
b)
Use of instrumentation to aid delivery
c)
Use of intravascular drugs
d)
Infection with Bacillus Subtilis
2.
Superabsorbent tampons have been involved in the pathogenesis of
____________ in young women
a)
Toxic shock syndrome
b)
Kawasaki disease
c)
Staphylococcal food poisoning
d)
Scalded skin syndrome
Page 1 of 6
3.
St. Vitus dance is due to:
a)
Formation of Ag – Ab complexes in the brain due to cross reactivity
between certain brain proteins and streptococcal M-proteins.
b)
Antigenic mimicry between cardiac myosin and streptococcal M-proteins.
c)
Cross reaction between renal basement membrane proteins and
streptococcal M-proteins.
d)
Accumulation of anti-M-protein antibodies on the synovial membrane of
joints.
4.
Which of the following is NOT a characteristic of scarlet fever?
a)
Flushed face with circumoral pallor
b)
Diffuse erythema rash on the neck, trunk and abdomen
c)
sTRAWBERRY tongue
d)
Rapidly developing pustules that itch
5.
Which ONE of the following nosocomial pathogens exhibits the widest spectrum
of antibiotic resistance?
a)
Staphylococcus aureus
b)
Escherichia coli
c)
Enterococcus faecalis
d)
Streptococcus pyogenes
6.
Quellung reaction can be used to identify:
a)
Pseudomonas aeruginosa
b)
Klebsiella pneumoniae
c)
Proteus mirabilis
d)
Salmonella typhi
7.
Antistreptolysin O titre is raised in infections caused by:
a)
Streptococcus bovis
b)
Streptococcus mutans
Page 2 of 6
c)
Streptococcus pyogenes
d)
Streptococcus sanguis
8.
Which ONE of the following media is selective for isolation of Neisseria
gonorhoeae?
a)
Chocolate agar
b)
Thayer Martin Medium
c)
Tellurite blood agar
d)
Mannitol salt agar
9.
Which ONE of the following is NOT a bacterial structure?
a)
Glycocalyx
b)
Contractile vacuoles
c)
Babes Ernst granules
d)
Axial filament
10.
The site most commonly affected by nasocomial infections is:
a)
The gastrointestinal tract
b)
The genital tract
c)
The urinary tract
d)
The respiratory tract
11. Physician
induced
infections are called _____________ infections
a)
Anthropophilic
b)
Iatrogenic
c)
Gnotobiotic
d)
Zoonotic
12.
Sterilization CANNOT be achieved by
a)
Dry heat at 180oC for 1 hour.
b)
Dry heat at 121oC for 15 minutes.
Page 3 of 6
c)
Boiling at 100oC for 3 hours
d)
Incineration.
13.
Pasteurization of cow milk is effective in preventing:
a)
Bovine tuberculosis
b)
Anthrax
c)
Botulism
d)
All of the above
14.
Examination of paired sera to demonstrate a four-fold rise in antibody titre is
useful in the diagnosis of:
a)
Typhoid
b)
Bacillary dysentery
c)
Gonococcal urethritis
d)
Staphylococcal enteritis
15.
Mycoplasma pneumoniae:
a)
Is susceptible to penicillins
b)
Does not cause disease in humans
c)
Contains peptidoglycan in its cell wall
d)
Is associated with respiratory tract infections.
16.
Confirmatory identification of Candida albicans can be done by:
a)
Positive urease test
b)
Presence of capsule
c)
Fluorescence under Wood’s lamp
d)
Positive germ tube test
17.
The earliest process during the development of dental carries is:-
a)
Plaque formation
b)
Enamel destruction
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