Question

Recently, a microbe that is able to digest cellulose was discovered in a hot spring with an average temperature of 95°c. predict the group to which this microbe most likely belongs.

Answer 1

Extremophile microbes are able to survive in many extreme conditions around the world. Pyrolobus fumarii is a microbe from the family of Archaea that is well suited to extreme temperatures. Pyrolobus fumarii thrives by living next to deep sea hydrothermal vents, which provides a similar habitat to hot springs.

Answer 2

It belongs to the Archaea group.

The Archaea group is known to grow by eating plants material -cellulose- above 80℃. This recently microbe is hyper thermophilic, likes temperatures near the boiling point of water, and it's the second member of the ancient group Archaea.
His cellulase is the most heat tolerant enzyme found.