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Question 597
Microbiology → General
Classification
Question
SSBAQuestion Header
Which organism is classified among the comma-shaped bacteria?
Question Stem
Which organism belongs to the comma-shaped rather than coccal, rod-shaped or spirochetal group?
Options
A
Treponema pallidum
B
Vibrio cholerae
C
Neisseria gonorrhoeae
D
Listeria monocytogenes
E
Escherichia coli
Explanation
Vibrio cholerae is classified among the vibrios, which are comma-shaped. Treponema pallidum is a spirochete; Neisseria gonorrhoeae is a coccus; Listeria monocytogenes and Escherichia coli are rods.
Option Validity
A) Treponema pallidum is a spirochete.
C) Neisseria gonorrhoeae is a coccus.
D) Listeria monocytogenes is a rod.
E) Escherichia coli is a rod within the Enterobacteriaceae.
Further Reading
Saxena R. Textbook for MRCOG-1: Basic Sciences in Obstetrics and Gynaecology. Chapter 6 — Microbiology and Immunology: Table 6.1 — Common forms of bacteria. Printed pages 183–184.