5 Questions
Which statement regarding the El-Tor vibrio biotype is true?
Voges-proskauer positive
Which disease is NOT attributed to Streptococcus pyogenes?
Post-partum fever
Multiple drug resistance in Mycobacterium is due to all of the following EXCEPT:
Catalase - peroxidase suppression of INH
All of the following are structural antigens of Neisseria gonorrhoeae EXCEPT:
M-protein
Characteristics of genus Corynebacterium include all of the following EXCEPT:
Catalase - peroxidase suppression of INH
Study Notes
El-Tor Vibrio Biotype
- El-Tor vibrio biotype agglutinates chicken erythrocytes
- It is sensitive to polymexin B
- Voges-proskauer test is positive for El-Tor vibrio biotype
- El-Tor vibrio biotype grows on TCBS agar
Diseases caused by Streptococcus pyogenes
- Erysipelas is a skin infection caused by Streptococcus pyogenes
- Impetigo is a superficial skin infection caused by Streptococcus pyogenes
- Streptococcus pyogenes causes puerperal fever, a postpartum infection
- Post-partum fever is also caused by Streptococcus pyogenes
Multiple Drug Resistant Mycobacterium
- Chromosomal mutation contributes to multiple drug resistance in Mycobacterium
- Mycobacterium does not carry plasmids, which distinguishes it from other bacteria
- Mutation in mycolic acid synthesis genes can lead to drug resistance in Mycobacterium
- Inhibition of catalase and peroxidase enzymes can suppress the action of isoniazid (INH) in Mycobacterium
Structural Antigens of Neisseria gonorrhoeae
- Pillin is a structural antigen of Neisseria gonorrhoeae
- OPA (opacity associated protein) is another structural antigen of Neisseria gonorrhoeae
- LOS (lipooligosaccharide) is a structural antigen of Neisseria gonorrhoeae
- M-protein is not a structural antigen of Neisseria gonorrhoeae
Characteristics of Genus Corynebacterium
- Catalase-peroxidase suppression of INH is not a characteristic of Corynebacterium
Test your knowledge of microbiology with these true or false and multiple choice questions. Topics include El-Tor vibrio biotype, Streptococcus pyogenes, Mycobacterium, and Neisseria.
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