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Why was the line between work and play not clearly defined in the premodern world?
Archaea
One of the two prokaryotic domains. The absence of peptidoglycan in their cell walls sets them apart from the bacteria. Compare with bacteria.
70S Ribosomes
Ribosomes typical in prokaryotes and mitochondria, involved in the synthesis of proteins, comprised of a 50S and a 30S subunit.
Crenarchaeota
A phylum of Archaea that includes thermophilic, acidophilic, and psychrophilic microbes, often found in extreme environments.
Sulfur Bacteria
A group of bacteria that oxidize sulfur compounds to obtain energy, playing a key role in the sulfur cycle in the environment.
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