Anaerobic Microorganisms + Normal Flora

Question 1

Gram-positive cocci in chains

GRAM-POSITIVE

Answer 1

Peptostreptococcus spp. (P. anaerobius, P. intermedius) 
Finegoldia magna (formerly P. magnus)

Question 2

Gram-positive bacilli

Non-spore-forming

Answer 2

Cutibacterium spp. (C. acnes [formerly Propionibacterium acnes])

Question 3

Spore-forming

GRAM-POSITIVE

Answer 3

Clostridium spp. (C. perfringens, C. tetani, C. botulinum)

Clostridioides difficile

Question 4

Branching, filamentous

GRAM-POSITIVE

Answer 4

Actinomyces spp. (A. israelii)

Question 5

Gram-negative cocci

GRAM-NEGATIVE

Answer 5

Veillonella spp. (V. parvula)

Question 6

Gram-negative bacilli

Answer 6

Bacteroides spp. (B. fragilis, B. thetaiotamicron, B. ovatus, B. distastonis) Fusobacterium spp.

Question 7

Normal Skin Flora

Answer 7

Diphtheriods (e.g., Corynebacterium spp.) Staphylococci (esp. S. epidermidis) Streptococci
Propionibacterium spp.

Question 8

Normal Flora gastrointestinal tract

Answer 8

Bacteroides spp. 
Enterobacteriaceae 
Enterococci 
Fusobacterium spp. 
Peptostreptococcus spp. 
Clostridium spp.

Question 9

Normal Flora Upper Respiratory Tract

Answer 9

Haemophilus spp.
Streptococci (viridans group)
Diphtheriods (e.g., Corynebacterium spp.) Neisseria spp.
Oral anaerobes

Question 10

Normal Flora Genital Tract

Answer 10

Corynebacterium spp. 
Enterobacteriaceae 
Lactobacillus spp. 
Mycoplasma spp. 
Staphylococci 
Streptococci 
Anaerobes 
Candida spp.