Bacteriology Comprehensive Examination Questions with Correct Answers Latest Update
2025-2026
It is considered as the bunches of grapes
a. S. aureus
b. P. aeruginosa
c. S. pyogenes
d. Micrococcus - Answers a. S. aureus
Staphy spp is resistant to ___ and susceptible to___
a. Lysostaphin, Bacitracin
b. Novobiocin, Bacitracin
c. Bacitracin, Lysostaphin - Answers c. Bacitracin, Lysostaphin
Micrococcus spp
is resistant to ___ and susceptible to___
a. Lysostaphin, Bacitracin
b. Novobiocin, Bacitracin
c. Bacitracin, Lysostaphin - Answers a. Lysostaphin, Bacitracin
A bacteria that cause a disease associated with medical devices such as catheters and
prosthetic cardiac valces
a. S. haemolyticus
b. S. lugdunensis
c. S. epidermidis - Answers c. S. epidermidis
A bacteria that cause a disease associated with young female that is sexually active
a. S. haemolyticus
b. S. saprophyticus
c. S. aureus - Answers b. S. saprophyticus
A bacteria that cause a disease associated with rarely implicated infections to
immunocompromised host (meningitidis, pneumonia, and brain abscess) and known as
,contaminants of clinical specimens
a. Micrococcus spp
b. Kocuria spp.
c. Kytococcus spp.
d. None of the above
e. All of the above - Answers e. All of the above
A bacteria that cause a disease associated with scalded skin syndrome, food poisoning, toxic
shock syndrome and bacteremia
a. S. haemolyticus
b. S. saprophyticus
c. S. aureus - Answers c. S. aureus
A bacteria that cause a disease associated endocarditis, septicemia, osteomyelitis and joint
infection
a. S. hyicus
b. S. schleiferi
c. S. delphini - Answers b. S. schleiferi
The following bacteria can cause opportunistic infections to human
1. S. aureus
2. S. capitis
3. S. haemophilus
4. S. mucilaginosus,
5. S. saprophyticus
a. 1, 5
b. 1,2,3
c. 2,3,4,5
, d. 1 only - Answers c. 2,3,4,5
A bacteria that cause a chronic middle ear infections
a. Micrococcus
b. Kocuria
c. Stomatococcus mucilaginosus
d. Alloiococcus otitidis - Answers d. Alloiococcus otitidis
Shows creamy, convex and golden yellow colonies - Answers S. aureus
This bacteria is considered as the cause of nosocomial infection - Answers S. aureus
Enterotoxin A and D:
Enterotoxin B:
Enterotoxin F: - Answers Food poisoning
enterocolitis
Toxic shock syndrome
Toxin associated with SSS or Ritter Lyell Disease - Answers Exfoliatin
The colonies shows porcelain white during cultivation of nutrient agar - Answers S. albus
(epidermidis)
Shows dome shaped elevation on BAP with butterlike texture and unwashed stocking odor -
Answers Indicative for growth of Staphylococcus spp.
Shows loosely twisted resembling stretched spiral - Answers Borrelia spp.
Motility shows corkscrew, osciliaring or swing like motility - Answers Borrelia spp
Vector of B. recurrentis - Answers Pediculus humanus subs. humanus
Vector of B. hermisii - Answers Ornithodoros hermisii
Vector of B. parkerii - Answers Ornithodoros parkerii
Borrellia recurentis cause __ relapsing fever - Answers Louse Borne
Most prefered laboratory testing for B. recurrensis - Answers Thick blood film
It is the agent of the lyme disease - Answers Borrelia burgdorferi
2025-2026
It is considered as the bunches of grapes
a. S. aureus
b. P. aeruginosa
c. S. pyogenes
d. Micrococcus - Answers a. S. aureus
Staphy spp is resistant to ___ and susceptible to___
a. Lysostaphin, Bacitracin
b. Novobiocin, Bacitracin
c. Bacitracin, Lysostaphin - Answers c. Bacitracin, Lysostaphin
Micrococcus spp
is resistant to ___ and susceptible to___
a. Lysostaphin, Bacitracin
b. Novobiocin, Bacitracin
c. Bacitracin, Lysostaphin - Answers a. Lysostaphin, Bacitracin
A bacteria that cause a disease associated with medical devices such as catheters and
prosthetic cardiac valces
a. S. haemolyticus
b. S. lugdunensis
c. S. epidermidis - Answers c. S. epidermidis
A bacteria that cause a disease associated with young female that is sexually active
a. S. haemolyticus
b. S. saprophyticus
c. S. aureus - Answers b. S. saprophyticus
A bacteria that cause a disease associated with rarely implicated infections to
immunocompromised host (meningitidis, pneumonia, and brain abscess) and known as
,contaminants of clinical specimens
a. Micrococcus spp
b. Kocuria spp.
c. Kytococcus spp.
d. None of the above
e. All of the above - Answers e. All of the above
A bacteria that cause a disease associated with scalded skin syndrome, food poisoning, toxic
shock syndrome and bacteremia
a. S. haemolyticus
b. S. saprophyticus
c. S. aureus - Answers c. S. aureus
A bacteria that cause a disease associated endocarditis, septicemia, osteomyelitis and joint
infection
a. S. hyicus
b. S. schleiferi
c. S. delphini - Answers b. S. schleiferi
The following bacteria can cause opportunistic infections to human
1. S. aureus
2. S. capitis
3. S. haemophilus
4. S. mucilaginosus,
5. S. saprophyticus
a. 1, 5
b. 1,2,3
c. 2,3,4,5
, d. 1 only - Answers c. 2,3,4,5
A bacteria that cause a chronic middle ear infections
a. Micrococcus
b. Kocuria
c. Stomatococcus mucilaginosus
d. Alloiococcus otitidis - Answers d. Alloiococcus otitidis
Shows creamy, convex and golden yellow colonies - Answers S. aureus
This bacteria is considered as the cause of nosocomial infection - Answers S. aureus
Enterotoxin A and D:
Enterotoxin B:
Enterotoxin F: - Answers Food poisoning
enterocolitis
Toxic shock syndrome
Toxin associated with SSS or Ritter Lyell Disease - Answers Exfoliatin
The colonies shows porcelain white during cultivation of nutrient agar - Answers S. albus
(epidermidis)
Shows dome shaped elevation on BAP with butterlike texture and unwashed stocking odor -
Answers Indicative for growth of Staphylococcus spp.
Shows loosely twisted resembling stretched spiral - Answers Borrelia spp.
Motility shows corkscrew, osciliaring or swing like motility - Answers Borrelia spp
Vector of B. recurrentis - Answers Pediculus humanus subs. humanus
Vector of B. hermisii - Answers Ornithodoros hermisii
Vector of B. parkerii - Answers Ornithodoros parkerii
Borrellia recurentis cause __ relapsing fever - Answers Louse Borne
Most prefered laboratory testing for B. recurrensis - Answers Thick blood film
It is the agent of the lyme disease - Answers Borrelia burgdorferi
