Multiple choice

Which of the following marine archeans appears to be an obligate symbiont on the archaeon Ignicoccus?

  1. Methanopyrus kandleri

  2. Sulfolobus solfataricus

  3. Nanoarchaeum equitans

  4. Picrophilus torridus

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

Nanoarchaeum equitans appears to be an obligate symbiont on the archaeon Ignicoccus. It is one of the smallest known cellular organisms and the smallest known archaeon.