Micro Organisms
A newly discovered microscopic structure is hypothesized to be a living organism. Which of the following lines of evidence would support the contention that this organism may be alive?

It utilizes energy
It contains DNA
All of these
It is made of a single cell

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Micro Organisms
The unifying feature of the archaea that distinguishes them from the bacteria is

presence of a cell wall containing a characteristic outer membrane
habitats which are extreme environments with regard to acidity
absence of a nuclear membrane temperature
cytoplasmic ribosomes that are 70S

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