What is the best culture medium for isolating Neisseria gonorrhoeae?
Anonymous Quiz
0%
MacConkey agar
0%
Mannitol salt agar
63%
Thayer-Martin agar
37%
Chocolate agar
Which of the following is a key virulence factor of Neisseria gonorrhoeae that helps it evade the immune system?
Anonymous Quiz
64%
IgA protease
18%
Exotoxin
4%
Superantigen
14%
M protein
A characteristic feature of Neisseria meningitidis that contributes to its pathogenicity is:
Anonymous Quiz
7%
Lipooligosaccharide (LOS) endotoxin
17%
Capsule
14%
Pili
62%
All of the above
Which age group is at highest risk for meningococcal disease?
Anonymous Quiz
59%
Neonates
21%
Young adults
10%
Elderly
10%
Middle-aged adults
Which of the following organisms causes a "rice-water" diarrhea?
Anonymous Quiz
3%
Clostridium difficile
90%
Vibrio cholerae
3%
Escherichia coli
3%
Neisseria meningitidis
What is the primary route of transmission of Vibrio cholerae?
Anonymous Quiz
4%
Person-to-person contact
0%
Aerosol inhalation
92%
Contaminated water
4%
Direct inoculation through wounds.
Which medium is used for selective isolation of Vibrio species?
Anonymous Quiz
8%
MacConkey agar
88%
Thiosulfate-citrate-bile salts-sucrose (TCBS) agar
4%
Mannitol salt agar
0%
Chocolate agar
What is the primary treatment for cholera in outbreak settings?
Anonymous Quiz
4%
Antibiotics
62%
Oral rehydration therapy
4%
Antitoxin
31%
Intravenous fluids
Which of the following toxins is produced by Clostridium difficile and is responsible for colonic inflammation and diarrhea?
Anonymous Quiz
26%
Alpha-toxin
9%
Toxin A
4%
Toxin B
61%
Both B and C
What is the typical shape of Staphylococcus bacteria?
Anonymous Quiz
0%
Bacilli
90%
Cocci in clusters.
10%
Diplococci
0%
Spirochetes
Which enzyme is associated with Staphylococcus aureus for protection against phagocytosis?
Anonymous Quiz
12%
Catalase
73%
Coagulase
15%
Hyaluronidase
0%
Urease
Which of the following diseases is primarily caused by Staphylococcus aureus toxin production?
Anonymous Quiz
85%
Food poisoning
15%
Endocarditis
0%
Osteomyelitis
0%
Pneumonia
Which bacterium is commonly found on the skin and can cause device-related infections?
Anonymous Quiz
6%
Staphylococcus aureus
91%
Staphylococcus epidermidis
3%
Streptococcus pyogenes
0%
Neisseria gonorrhoeae
Which virulence factor allows Staphylococcus epidermidis to colonize prosthetic devices?
Anonymous Quiz
0%
Alpha toxin
91%
Biofilm formation
3%
Lipase
6%
Exfoliative toxin
What is a common infection caused by Streptococcus pyogenes?
Anonymous Quiz
0%
Gonorrhea
65%
Cellulitis
35%
Meningitis
0%
Botulism
What characteristic hemolysis pattern is seen in Streptococcus pyogenes?
Anonymous Quiz
10%
Alpha hemolysis
90%
Beta hemolysis
0%
Gamma hemolysis
0%
No hemolysis
What is the preferred antibiotic for treating Group A streptococcal infections?
Anonymous Quiz
3%
Clindamycin
66%
Penicillin
0%
Tetracycline
31%
Vancomycin
What condition is associated with Streptococcus pneumoniae?
Anonymous Quiz
30%
Rheumatic fever
58%
Sinusitis
12%
Food poisoning
0%
Tetanus
What test differentiates Neisseria meningitidis from Neisseria gonorrhoeae?
Anonymous Quiz
24%
Oxidase test
3%
Gram stain
65%
Sugar fermentation profile
9%
Catalase test
Teicoplanin has the following feature(s):
indications
indications
Anonymous Quiz
28%
Antimicrobial activity and indications similar to vancomycin
22%
Long elimination half-life
0%
c) Efficacy in systemic infections by oral route
50%
Both ‘A’ and ‘B’ are correct