Micro Organisms
Evolutionary relationships between groups of organisms are determined using which of the following type of information?

Comparisons of biochemical pathways
Comparisons of structural features
Comparisons of nucleotide sequences
All of these

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

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

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