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| domain of life containing anucleate cells that have unique lipids in their membranes, distinctive RNA sequences, and cell walls that lack peptidoglycan |
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| domain of life that contains anucleate cells having distinctive RNA sequences and cell walls that contain peptidoglycan |
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domain of life that features organisms made of cells having a membrane-delimited nucleus and differentiating in many other ways from archaea and bacteria
includes protsists, fungi, plants, and animals |
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| diverse group of eukaryotic microorganisms that range from unicellular forms (yeasts) to multicellular molds and mushrooms |
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| entire genetic makeup of an organism |
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| an approach to studying organisms that involves sequencing the genome, identifying genes, and assigning functions to genes |
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| set of rules for proving that a specific microorganism causes a particular disease |
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| study of organisms that are usually too small to be seen with the naked eye; special techniques are required to isolate and grow them |
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| an organism that is too small to be seen with naked eye and lacks highly differentiated cells and distinct tissue |
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| infectious agents, composed only of protein, that cause spongiform encephalopathies such as scrapie in sheep |
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cells having a type of structure characterized by the lack of a true, membrane-enclosed nucleus
all of archaea and most of bacteria |
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unicellular eukaryotic organisms that lack cellular differentiation into tissues
cell differentiation limited to cells involved in sexual reproduction, alternate vegetative morphology, or cysts
includes algae and protozoa |
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| an early belief, now discredited, that living organisms could develop from nonliving matter |
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| infectious agents of plants composed of single stranded RNA |
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infectious agents having simple acellular organization with protein coat and nucleic acid genome
lacking independent metabolism, and reproducing only within living host cells |
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infectious agents composed of single stranded RNA
unable to replicate without aid of specific viruses that coinfect host cell |
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