MICRO 1 Midterm Lecture
Microbiology Quiz: Bacterial Pathogens and Virulence Factors
Welcome to the Micro 1 Midterm Quiz! Test your knowledge on various bacteria, their virulence factors, and laboratory identification methods. This comprehensive quiz covers key concepts and details that are essential for any microbiology student.
Whether you're revising for an exam or simply want to challenge yourself, this quiz is a great way to reinforce your understanding of bacterial pathogens:
- 30 thought-provoking questions
- Covers clinical and laboratory aspects
- Track your progress and knowledge
Which bacteria has a club form microscopic morphology?
Corynebacterium diphtheriae
Listeria monocytogenes
Erysipelothrix rhusiopathiae
Bacillus anthracis
What is the most prominent virulence factor of the bacteria identified in Question 1?
Tox gene
Protein P60
IgA Protease
None of the above
This agar is used as selective and differentiative media for identifying Corynebacterium.
SBA
CTBA
Tinsdale's Agar
Loeffler serum
Which of the following is the virulence factor of Corynecaterium jeikeium?
Diphteria toxin
Multiple antibiotic resistance
Both A&B
None of the above
C. Diphtheriae is carried to the upper respiratory tract by droplet infection or hand-to-mouth contact. True or False?
True
False
What is/are the natural host/s of C. diphtheriae
Pigs
Humans
Both A&B
None of the Above
How long is the incubation period of C. diphtheriae?
2 to 3 days
2 to 5 days
2 to 4 days
None of the above
The toxigenicity test for C. Diphtheriae is Elek test. PCR detection for tox gene has been developed.
Both statements are TRUE.
The first statement is TRUE. The second statement is FALSE.
BOTH STATEMENTS ARE FALSE.
The FIRST statement is FALE. The SECOND statement is TRUE.
This bacteria is positive to Tinsdale's Halo, Urease and Gelatin Hydrolysis tests.
C. diphtheriae
C. diphteriae
C.ulcerrans
None of the above
A rapid urease producer demonstrates what color?
Red/magenta
Yellow
Orange
Cyan
Which of the following is NOT a virulence factor or Listeria monocytogenes?
Protein p60
Listeriolysin O
Both A&B
None of the above
Which virulence factor of Listeria monocytogenes is antiphagocytic?
Protein p60
Listeriolysin O
Both A&B
None of the above
Which bacteria inhibits CAMP reaction?
Listeria monocytogenes
Arcanobacterium haemolyticum
Both A&B
None of the above
Whic of the following does NOT exhibit B-hemolysis
Listeria monocytogenes
Corynebacterium jeikeium
Erysipelothrix rhusiopathiae
Both A&B
Both B&C
None of the above
The following DO NOT EXHIBIT positive results in Bile Esculin Agar except:
L. monocytogenes
E. rhusiopathiae
Both A&B
None of the above
Pleomorphic clue cells are found in which bacteria?
Gardnerella vaginalis
Bacillus anthracis
Nocardia
None of the above
True or False. Arcanobacterium haemolyticum produces a test-tube brush like pattern at 22 degrees celsius.
True
False
Which bacteria manifests pulmonary infection?
Nocardia asteroides
Nocardia brasiliensis
Both A&B
None of the above
On SBA, this bacteria's colonies resemble Klebsiella and can form salmon-pink pigment on prolonged incubation.
Rhodococcus equi
Tsukamurella paurametabola
Streptomyces anulatus
None of the above
It is the causative agent of Whipple's disease.
Rhodococcus
Tsukamurella
Streptomyces
None of the above
The anthrax toxin consists of three proteins except:
Protein p60
Protective Antigen
Edema factor
Lethal factor
It is also known as wool sorter's disease:
Cutaneous anthrax
Inhalation anthrax
Gastrointestinal anthrax
Injectional anthrax
B. Cereus is an uncommon cause of food poisoning. B. Anthracis takes two forms: diarrheal and emetic.
Both Statements are TRUE
Both Statements are FALSE
The FIRST Statemsnt is TRUE. The SECOND statement is FALSE.
The FIRST Statement is FALSE. The SECOND Statement is TRUE.
True or False. The diarrheal form of Bacillus cereus is indistinguishable from diarrhea caused by Clostridium perfringens.
True
False
Exhibits red skin via red disease.
Erysipelothrix rhusiopathiae
Bacillus anthracis
Both A&B
None of the above
True or False. B. Anthracis is susceptible to penicillin but resistance can occur in the absene of B-lactamase production.
True
False
They are etiologic agents of mycetomas which are identical to those caused by Nocardia.
Actinomadura
Tsukamurella
Both A&B
None of the above
Which bacteria are referred to as nocardioform?
Streptomyces
Tsukamurella
Actinomadura
None of the above
Fragment A is responsible for toxigenicity of the diphtheria toxin. Trypsinization cleaves the toxin into two fragments.
BOTH STATEMENTS ARE TRUE
BOTH STATEMENTS ARE FALSE
THE FIRST STATEMENT IS TRUE. THE SECOND STATEMENT IS FALSE.
THE FIRST STATEMENT IS FALSE. THE SECOND STATEMENT IS TRUE.
Which among the following are NOT a Virulence Factor of L. monocytogenes
Hemolysin
Catalase
Superoxide dismutase
None of the above
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