Multiple choice

Which of the following is the largest bacterium in the world?

  1. Bdellovibrio

  2. Thiomargarita namibiensis

  3. Helicobacter pylori

  4. Epulospiscum fishelsoni

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Thiomargarita namibiensis means sulphur pearl of Namibia. It is the largest bacterium in the world. It is visible to the naked eye as a speck of size 3 - 4 mm.