Fairly easy

The causative agent of syphilis is

Correct answer: D. the bacterium Treponema pallidum

  • A. a virus
  • B. a fungus
  • C. a protozoan
  • D. the bacterium Treponema pallidum

Explanation

Treponema pallidum is a spirochaete bacterium, which is why syphilis responds to penicillin. Viral STDs such as HIV and herpes cannot be cured with antibiotics, an important clinical distinction.

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? support@testustad.com

About Human Reproductive System

The human reproductive system includes the male and female organs that produce gametes, secrete sex hormones and support fertilization and development. Questions cover the testes, ovaries, reproductive ducts, menstrual and ovarian cycles, ovulation, fertilization, implantation, placenta formation and the roles of FSH, LH, oestrogen, progesterone and testosterone.

Practise Reproduction

1,220 free Reproduction MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Biology questions like this

Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

More Human Reproductive System questions