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Question 604
Microbiology → General
Classification
Question
SSBAQuestion Header
Which set contains only facultative anaerobic bacteria?
Question Stem
Which combination consists entirely of bacteria classified as facultative anaerobes?
Options
A
Clostridia, Bacteroides and Actinomyces
B
Staphylococcus aureus, Bacteroides and Listeria
C
Staphylococcus aureus, Escherichia coli and Listeria
D
Escherichia coli, Actinomyces and Clostridia
E
Listeria, Bacteroides and Actinomyces
Explanation
Staphylococcus aureus, Escherichia coli and Listeria are facultative anaerobic bacteria. Clostridia, Bacteroides and Actinomyces are strictly anaerobic.
Option Validity
A) Clostridia, Bacteroides and Actinomyces are all strictly anaerobic.
B) Bacteroides is strictly anaerobic, making this a mixed group.
D) Actinomyces and Clostridia are strictly anaerobic, making this a mixed group.
E) Bacteroides and Actinomyces are strictly anaerobic, making this a mixed group.
Further Reading
Saxena R. Textbook for MRCOG-1: Basic Sciences in Obstetrics and Gynaecology. Chapter 6 — Microbiology and Immunology: Table 6.2 — Anaerobic bacteria. Printed page 185.