Applied61-30
Microbial Infection Quiz
Test your knowledge on microbial infections with our comprehensive quiz covering various bacteria, their pathogenicity, and treatment options. This quiz includes multiple-choice and checkbox questions, ensuring a thorough assessment of your understanding.
Key Features:
- 40 engaging questions
- Diverse topics related to bacteria and infections
- Instant feedback on your answers
61. Bacillus anthracis can be identified by using microscope because of:
A. Its white colony type S
B. Its capsula with gram -
C. Its long chain like bamboo cane
D. All response above
62. Bacillus anthracis's infection can be treated by:
A. Chlopromazine, Diazepam & Penicillin ( on wound open)
B. Penicillin G, Tetracycline & Fluoroquinolone
C. Penicillin tetracycline & generation 3rd cephalosporin
D. All response above
63. Bacillus Gram (-), strict anaerobic & non-sporulating refer to :
A. Bacteroides
B. Leptospira interrograns
C. Mycoplasma pneumonia
D. Bacillus anthracis
64. The most pathogenic species in human of Bacteroides is:
A. Bacteroides of Melanogenic group
B. Bacteroides intermedus
C. Bacteroides Fragilis group
D. Bacteroides fragilis
65. Bacteroides (in human) can be found in:
A. Respiratory, Gastrointestinal tract & Urine
B. B. Natural cavities, mouth, intestines, vagina (flora Veillon) polychromatophil
C. Any infection of the skin
D. All response above
66. Transmission path of Bacteroides are:
A. Transdermal cut & contamination by contact with water & mud
B. Air path or nasopharyngeal secretion & direct contact
C. Animal bite, Trauma & Surgical act
D. Bite of ticks (bloodsucking insects)
67. Peritonitis or abscess visceral & genital infections (Chronic vaginitis Endometritis, salpingitis) are symptoms given by infection caused by:
A. Bacteroides
B. Leptospira interrograns
C. Mycoplasma pneumonia
D. Bacillus anthracis
68. Bacteroides (Fragilis group) colonies can be identified by its morphology such as:
A. Circular, convex, white or greyish, transcluside or opaque with diameter: 1-3 mm
C. Circular, convex, Black or greyish, transcluside or opaque with diameter: 1-3 mm
B. Circular, convex, white or greyish, transcluside or opaque with diameter: 3-5 mm
D. All response above
69. Bacteroides (melanogenic group) colonies can be identified by its morphology such as:
A. Circular, convex, white or greyish, transcluside or opaque with diameter: 1-3 mm
B. Circular, convex, white or greyish, transcluside or opaque with diameter:3-5 mm
C. Smooth or rough Surrounded by total hemolytic zone (hemolysis type B)
D. All response above
70. Bacteroides's infection can be treated by:
A. Chlopromazine, Diazepam & Penicillin (or wound open)
B. Chloramphenicol, Macrolide, Limcosamide & Streptogramines
C. Penicillin tetracycline & generation 3rd cephalosporin
D. All response above
1. Virulent factor of pneumococcus Except:
A. Pneumolysin
B. Surface protein adhesins
C. Toxic shock syndrome toxin-1 (TSST-1)
D. Phosphorylcholine
2. Capsulated Gram positive diplococcic is:
A. Gonococci
B. Pneumococci
C. Meningococci
D. Staphylococci
3. In human being S. Pneumonia causes
A. Septicaemia
B. Paronychia
—‹ C. Pneumomnia
D. None of these
4. Virulence factor for S. pneumonia:
A. Capsular polysaccharide
B. Specific soluble substance
D. Forsmann antigen
C. Vi-antigen
5. A 65-year-old male presents to his family physician with a rapid onset fever, chest pain and cough productive of rusty-yellow sputum. Chest X-ray. Shows focal lobar infiltrates. A Gram stain of a sputum sample contained many polymorphonuclear leukocytes and extracellular gram-positive diplococcic. Capsule-specific antibodies bound to the diplococcic resulted in a positive Quellung reaction. Which of the following is the most likely pathogen?
A. Streptococcus pneumonia
B. Enterococcus faecium
C. Streptococcus pyogenes
D. Streptococcus agalactiae
6. Which of the following statements about Group B streptococci (Streptococcus agalactiae) is not correct?
A. They are important causes of toxic strep syndrome.
B. They are frequent colonizers of the female genital tract.
C. Screening for this pathogen during pregnancy has reduced the incidence of neonatal sepsis.
D. They cause urinary tract infections and bacteremia.
7. Virulence of Streptococci is mainly associated with:
A. Endotoxin
B. Catalase
C. M protein
D. Lipopolysaccharide
8. Which of the following Gram-positive bacteria causes pharyngitis (sore throat)?
A. Neisseria
B. Staphylococcus
C. Streptococcus
D. Mycobacterium
9. The natural reservoir of Streptococcus pyogenes is:
A. Nasal cavity
B. Genetic tract
C. Skin
D. Intestinal tract
10. The bacterial sore throat is caused by
A. Staphylococcus aureus
B. Haemophilus spp
C. Streptococcus pyogenes
D. Mycoplasma pneumonia
11. Which of the following statements is correct?
A. Streptococci are catalase positive.
B. Growth of Streptococcus pneumonia is not sensitive to optochin.
C. Streptococcus pyogenes is highly sensitive to bacitracin.
D. Streptococci are obligate anaerobes.
12. The antistreptolysin O titre is raised in infections caused by:
A. Enterococcus faecalis
B. Streptococcus pneumonia
C. Streptococcus pyogenes
D. Streptococcus mutans
13. Causative agent of syphilis
A. Trepomena pallidum
B. Trepomena pertenue
C. Trepomena carateum
D. Trepomena endemicum
14. Not true of syphilis is that:
A. VDRL test become positive after 10-15 days of infection.
B. Confirm positive FTA-ABS (non-treponemal test) results by RPR test (treponemal test).
C. VDRL test becomes negative after treatment.
D. Treponemal tests is more specific than cardiolipin-based nontreponemal tests.
15. Which one is the specific test for syphilis?
A. GDRL test
B. Frei's
C. C. FTA test
D. Widal test
16. Which one is not true of syphilis
A. Caused by Treponema pallidum
B. Secondary eruption occurs within 4-6 weeks
C. Penicillin is the drug of choice for the treatment
D. Culture is sensitive technic for diagnosis
18. VDRL test is a
A. Agglutination test
B. Slide flocculation test
C. Precipitation test
D. None of these
19. True about Enterococcus faecalis is all, except:
A. It is included in the Lancefield's D group
B. It is a commensal gastrointestinal tract
C. It is sensitive to penicillins, sulphamides and streptomycin
D. It causes bacterial endocarditis and bacteraemia
20. A 55-year-old man was admitted to a local hospital with fever and chills. The patient was human immunodeficiency virus positive and had received multiple courses of antibiotics. Blood cultures grew gram-positive cocci, which tested positive with group D streptococcal anti-sera. The isolate was resistant to penicillin and vancomycin. Which one of the following is the most likely pathogen?
A. Streptococcus pneumonia
B. Enterococcus faecium
C. Streptococcus pyogenes
D. Streptococcus agalactiae
21. Bacilli Calmette Guerin (BCG) contains the avirulent strains of
A. Mycobacterium tuberculosis
B. Mycobacterium avium
C. Mycobacterium bovis
D. Mycobacterium leprae
22. Which of the following types of cells is related to delayed type tuberculin test?
A. Monocytes
B. B lymphocytes
C. T lymphocytes
D. Macrophages
23. How is Mycobacterium leprae cultured in the laboratory?
A. It is grown on complex media
B. It is grown in the footpads of normal mice, in thymectomized irradiated mice, and in the armadillo
C. It is a fastidious organisms that requires a variety of special conditions for growth.
D. It is grown on minimal media.
24. The species of Mycobacterium that cannot be grown in artificial media is:
A. M. tuberculosis
B. M. leprae
C. Both A & B
D. None of the above
25. An important characteristic of Mycobacteria is that they are:
A. Gram negative
B. Rapid growing (doubling time 15 minutes)
C. Acid fast
D. Alpha hemolytic
26. Symptoms of reactivation tuberculosis include:
A. Weight loss
B. Hypotension
C. Nausea and vomiting
D. Headache
27. Rough and buff colonies on Lowenstein-Jensen medium are characteristic of
A. Mycobacterium chelonei
B. Mycobacterium bovis
C. Mycobacterium tuberculosis
D. Mycobacterium fortuitum
28. Pneumonia in AIDS patients is frequently caused by which one of the following bacteria?
A. Streptococcus pneumonia
B. Mycobacterium tuberculosis
C. Klebsiella pneumonia
D. None of these
29. Humans become infected with Mycobacterium tuberculosis most frequently by
A. Inhalation
B. Ingestion
C. Contact
D. Inoculation
30. A 20-year-old, sexually-active female presents at her family physician's office with fever, painful arthritis of the right knee, and several small pustules on her extremities. Material from the pustules and joint fluid were collected for culture on modified Thayer-Martin medium. Which one of the following is the most likely pathogen?
A. Meningococci
B. Streptococcus pyogenes
C. Staphylococcus aureus
D. Gonococci
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