Question

Treponema pallidum is a ________ Bacterium
A. Streptococcus
B. Streptobacillus
C. Spirochaete
D. Oligochaete

Answer 1

Hint: Treponema pallidum is a Gram-negative microbe that is winding fit as a fiddle. It is present inside a parasite which causes syphilis, a constant human sickness. It is known to cause certain diseases and thus, are highly infectious.

Complete answer:
We have to discover that Treponema pallidum is a bacterium which is helical in structure and has an external film made out of peptidoglycan. It is gram-negative and has lipopolysaccharide in its external layer. T. pallidum is a chemoheterotroph that requires energy from chemicals as well as it feeds on other organisms. . T. pallidum is additionally microaerophilic, implying that it requires an extremely low grouping of oxygen. It isn't able to produce some compounds and as a result, it can't "combine unsaturated fats, nucleotides, chemical cofactors and most amino acids".

T. pallidum imports molecules using 18 ATP-binding units which are particular for specific sugars, amino acids, or cofactors. DNA replication, record, interpretation, and fix instruments for T. pallidum are flawless. Another result of T. pallidum's little coding limit is that it must depend vigorously on its host for supplements making it very difficult to culture in the lab.
Notwithstanding, in other microscopic organisms, lipopolysaccharide is available in the external film. The external film is having treponemal ligands that act as a connection of the bacterium to the host. This bacterium additionally has certain clinical importance as it causes different maladies. It by and large influences the skin and causes sores in the skin during starting long periods of contamination. We can say that the injuries begin to create inside hardly any weeks to months and are exceptionally infectious. The sickness can be transmitted through direct contact with the skin. In the majority of the cases, the injuries may get relieved with the progression of time. Yet, now and again, the injuries stay in the skin for a lifetime. This is the tertiary stage. In the tertiary stage, it might contaminate the indispensable organs, for example, the heart, eyes, just as the sensory system. It is a spirochete bacterium and has different subspecies. It is communicated distinctly in people and is normally 7-14 micrometers long.

Hence, the correct answer is option (C)

Note: Now, we know that Treponema pallidum, belonging to the family Spirochaetaceae which is a spirochaete bacterium that affects the skin and causes skin lesions. The lesions are not fatal but in some cases may infect the vital organs such as the heart, eyes, as well as nervous system.