Q.Which one of the following groups includes sexually transmitted diseases caused by bacteria only ?
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Start your 14-day free trial to unlock the full solution →Syphilis, gonorrhoea and chlamydiasis are all bacterial STDs; trichomoniasis (protozoan) and candidiasis (fungal) do not belong in an all-bacterial group.
Sexually transmitted diseases are caused by a range of different pathogens. Syphilis is caused by the bacterium Treponema pallidum, gonorrhoea by the bacterium Neisseria gonorrhoeae, and chlamydiasis by the bacterium Chlamydia trachomatis -- all three are bacterial infections. Trichomoniasis, by contrast, is caused by the protozoan parasite Trichomonas vaginalis, and candidiasis is caused by the yeast/fungus Candida albicans; genital herpes (not listed as an option here but often grouped with STDs) is viral. Since the question asks for the group that includes only …
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