Question

The smallest eubacterium Dialister pneumosintes (0.15-0.3 μ) occurs in
A. Colon of man
B. Fat body of cockroach
C. Nasal chamber of man
D. Soil

Answer 1

Hint: Dialister pneumosintes is a nonmotile, nonfermentative, non-spore-forming, strictly anaerobic, gram-negative bacteria that has been related to some sort of infections in the human body. The species was first detached from nasopharyngeal discharges of patients.

Complete answer:
Dialister pneumosintes (previously named Bacteroides pneumosintes) is a nonfermentative, anaerobic, gram-negative rod that develops with little, roundabout, transparent, sparkling, smooth colonies on blood agar. D. pneumosintes has been recouped from profound periodontal pockets, yet little is thought about the connection between the life form and dangerous periodontal disease.
Dialister pneumosintes have demonstrated pathogenic potential in different locales of the body including the lung, cerebrum, and dental root channels. It has been isolated from a few human contaminations. The species was first segregated from nasopharyngeal emissions of patients during this flu pandemic of 1918 to 1921. It has been distinguished in kids with gingivitis and youth grown-ups with periodontitis. D. pneumosintes has additionally been recouped from discharge and body liquids and from human bite wounds.
Dialister pneumosintes have been hard to distinguish and culture. Troubles in isolation of D. pneumosintes might be the consequence of its exacting anaerobic necessity and moderate development, its non-reactive nature in most ordinary bacteriologic tests, the trouble of recognizing it from the Eubacterium species in essential culture. The incomplete 16s rRNA gene quality of D. pneumosintes ATCC 33048T comprised of 1,504 nucleotides (comparing to position 29 to 1504 of the Escherichia coli 16s rRNA)

Hence, the correct answer is option (C).

Note: Dialister pneumosintes, shows pathogenic potential in different destinations of the body including the lung, cerebrum and dental root trenches. It has been confined from a few human contaminations. The species was first disengaged from nasopharyngeal discharges of patients during the flu epidemic of 1918 to 1921.