The document requests written answers on two topics related to microbiology. First, it asks for an explanation of the host range of a virus. Second, it describes the conditions of a planet based on the characteristics of a discovered prokaryotic organism.

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1. Explain how the host range of a virus works.
2. Imagine we sent a spacecraft to visit another planet outside of our solar system. When the
spacecraft returned to Earth many years later, a prokaryotic organism was found living on it's
surface .The organism is a mesotolerant thermophile ,not halotolerant, an obligate alkalinophile ,
and an aerotolerant anaerobe. Based on these characteristics, describe the conditions of the
planet.