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- Cell (biology) (28190 bytes)
3: ...are composed of one or more cells; all cells come from preexisting cells; all vital functions of an or...
5: The word ''[[cell]]'' comes from the [[Latin]] ''cella'', a small room. The nam...
15: ...ored in organic molecules. This energy is derived from [[metabolic pathway]]s.
23: ...they live alone or in groups. [[Organism]]s vary from single cells (called '''single-celled''' or '''...
27: ...]], prokaryotic cells are placed in the domains [[Archaea]] and [[Eubacteria]]. - Microbiology (4238 bytes)
1: ...of the work in microbiology is done using methods from [[biochemistry]] and [[genetics]]. It is also r...
7: * Cells can easily survive in isolation from other cells
9: ... time. Even if 90% of the cells are killed by the freezing process, there are millions of cells in a m...
11: ... numerous [[colony (biology)|bacterial colonies]] from their specific locations on one agar-filled pet...
18: ...brid system]] combines bacterial genes with genes from the organism being studied and inserts them int... - Prokaryote (4630 bytes)
1: ...roversial arrangement of Eukaryote, Bacteria, and Archaea is called the [[three-domain system]].
4: ...c processes and are believed to have been derived from endosymbiotic bacteria. In prokaryotes similar...
8: ... of the colony is undifferentiated and capable of free-living. Colonies are formed by organisms that ...
11: ...s are found in nearly all environments on earth. Archaea in particular seem to thrive in harsh conditions,...
18: ...like eukaryotes do, prokaryotes may obtain energy from inorganic chemicals such as hydrogen sulfide. - Genetic code (15677 bytes)
268: === Phase or reading frame of a sequence ===
269: ... RNA sequence. Mutations that disrupt the reading frame (i.e. insertions or deletions of one or two nu...
273: ... In some species of [[bacterium|bacteria]] and [[archaea]], a few non-standard amino acids are substituted...
277: ...ndences that happened to establish itself and be "frozen in" early in evolution, although ''functional... - Biology (23579 bytes)
4: '''Biology''' is the [[science]] of [[life]] (from the [[Greek language|Greek]] words ''bios'' = l...
19: ...>Biology studies the variety of life ''(clockwise from top-left)'' ''[[E. coli]]'', tree [[fern]], [[g...
38: ... tells the characteristics of the various species from which it descended—together with its gene...
42: ...on of the three domains [[bacterium|bacteria]], [[archaea]], and [[eukaryote]]s as described initially by [...
52: :[[Archaea]] (originally Archaebacteria) -- [[Bacterium|Bact... - Cell (29541 bytes)
3: ...are composed of one or more cells; all cells come from preexisting cells; all vital functions of an or...
5: The word ''[[cell]]'' comes from the [[Latin]] ''cella'', a small room. The nam...
15: ...ored in organic molecules. This energy is derived from [[metabolic pathway]]s.
23: ...they live alone or in groups. [[Organism]]s vary from single cells (called '''single-celled''' or '''...
27: ...]], prokaryotic cells are placed in the domains [[Archaea]] and [[Eubacteria]]. - Oxygen (9039 bytes)
37: ...] and [[bacteria]]). The atmospheric abundance of free oxygen in later geological epochs and up to the...
42: ...spiration in animals. The word ''oxygen'' derives from two words in [[Greek language|Greek]], ''oxys''...
44: .... Liquid O<sub>2</sub> is usually obtained by the fractional distillation of liquid air. Both liquid a...
75: Oxygen derivatives are prone to form [[free radicals]], especially in metabolic processes. ... - Plankton (2900 bytes)
3: ... [[ocean]], [[sea]]s, and bodies of [[Fresh water|freshwater]]. While some forms of plankton can move...
28: * '''[[Phytoplankton]]''' (from [[Greek language|Greek]] ''phyton'' or plant), ...
29: * '''[[Zooplankton]]''' (from [[Greek language|Greek]] ''zoon'' or animal), s...
30: ...cterioplankton]]''', [[bacterium|bacteria]] and [[archaea]], which play an important role in absorbing nutr... - Flagellum (8951 bytes)
4: ...are helical filaments that rotate like screws. [[Archaea]]l flagella are superficially similar, but are di...
8: ...ok" which allows the helix to point directly away from the cell. A shaft runs between the hook and the...
12: ... thought that bacterial flagella may have evolved from such pores.
22: == Archaeal flagellum ==
24: ...s found exclusively in the archaea (also known as archaeabacteria, depending on whether or not one believes... - Microorganism (1865 bytes)
4: ...onomic]] structure. [[Bacterium|Bacteria]] and [[archaea]] are almost always microscopic. A number of [[eu... - Cell wall (6206 bytes)
15: ...o or more different domains, each with a sequence from a different class of glycoprotein. Most cell wa...
24: ... number of marine [[green algae]] including those from the genera, ''Codium'', ''Dasycladus'', and ''A...
32: ...ganic cell walls produced by other groups, silica frustules require less energy to synthesize (approxi...
38: ...archaea]] are not made of peptidoglycan, but some archaea may contain [[pseudopeptidoglycan]], which is com... - Organism (3272 bytes)
3: ...oplast]]s, are generally considered to be derived from [[endosymbiotic theory|endosymbiotic]] bacteria...
46: ... but it appears most likely that they are derived from their hosts.
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