The bacterium Treponema pallidum is responsible for which sexually transmitted disease?
Correct answer: A. Syphilis
- A. Syphilis
- B. Chlamydia
- C. Gonorrhea
- D. Genital herpes
Explanation
Treponema pallidum is the spiral bacterium, or spirochaete, that causes syphilis, a disease progressing through primary, secondary, latent and tertiary stages over many years if untreated. Gonorrhoea is caused by the diplococcus Neisseria gonorrhoeae and chlamydia by Chlamydia trachomatis. Genital herpes is viral and therefore not treatable with antibiotics at all.
This question appeared on the UHS MDCAT 2025 paper, which you can sit online with every answer explained.
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About Sexually Transmitted Diseases
Sexually transmitted diseases result from bacterial, viral or other infections passed mainly through sexual contact, including gonorrhoea, syphilis, HIV infection, hepatitis B and genital herpes. Questions cover transmission, symptoms, complications, testing, prevention and treatment, while distinguishing infection from infertility or other non-infectious reproductive disorders.
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