Algae eucaryotic

Algae— Eucaryotic protists which may be unicelled, multicelled, or colonial capable of carrying photosynthesis. 

The naturally occurring nucleoside/nucleotide antibiotics, which have been isolated from bacteria, fungi, blue-green algae, and marine sponges, have proven to be useful biochemical probes in eucaryotic, procaryotic, viral, fungal, and plant systems. Some excellent reviews on the nucleo-side/nncleotide antibiotics are available. 

Decaying eucaryotic alga, POM Active bacteria 0 o Dormant bacteria... 

It is now clear that among organisms there are two different organizational patterns of cells, which Chatton (1937) called, with singular prescience, the eucaryotic and procaryotic type. The distinctive property of bacteria and bluegreen algae is the procaryotic nature of their cells. [39]... 

In general, calcification is governed by photosynthetic and non-photosynthetic CO2 fixation and, one may recognize an evolutionary sequence from simple chemical precipitation caused by the environmental effects of procaryotes to the highly organized membranous calcification systems found in eucaryotic algae and animals. 

For the complete structures of ferrocytochrome c (Fe- ). see Takano, T. Trus, B. L. Mandel. N. Mantlet, G. Kallai, O. B. Swan.son, R. Dickerson. R. E. J. Biol. Chem. 1977, 252. 776-785. Sec Stryer. L. Biochemistry, 3rd cd. Freeman New York, 1981 pp 328-329. Dickerson, R. E. Sci. Amer. 1972, 226(4) pp 58-72. Eucaryotic cells have their DNA in true nuclei, as opposed to procaryotic cells (bacteria and blue-green algae) which do not. u The prefix met- is used to signify that the iron atom, normally in the -I-2 oxidation state, has been oxidized to -t-3. 

Sec Stryer. L. Biochemistry. 3rd cd. Freeman New York. 1981 pp 328-329. Dickerson. K. E. Sci. Amcr. 1972, 226(4) pp 38-72. Eucaryotic celts have thdr DNA in true nudei. as opposed to procaryotic cells (bacteria and blue-green algae) which do not. 

Organisms containing eucaryotic cells include animals, plants, fungi, algae, and protozoa. Figure 1.2 shows typical animal and plant eucaryotic cells. 

Eucaryotic micro-organisms of importance to the analytical chemist include the fungi, protozoa and algae. 

Also in use are tests that utilize protozoa. Spirotox uses the protozoan Spirostomum ambiguum as a test organism to determine the quality of water (19). This ciliate is sensitive to many compounds, especially heavy metals, that may be found in wastewater. Other eucaryotes have been used in toxicity monitoring, including algae (5,20), but they are not as widely used as fish or daphnia. 

Whether some procaryotes contain sterols and others do not has, of course, an important bearing on evolutionary relationships. One may ask, for example, whether Methylococcus and related methanotrophs were ancestral to a line of aerobic bacteria which then abandoned the sterol pathway or whether in another independently evolving branch of aerobes sterol biosynthesis was never invented. These issues are of interest not only by themselves but also because they bear on the matter of how the wide evolutionary gap between procaryotes and eucaryotic cells was bridged. As pointed out earlier, the possession of the sterol molecule is a universal feature of eucaryotic forms of life. For eucaryotes, phylogenetic relationships are much more certain than they are for procaryotic cells so that one can speak with some confidence of eucaryotes that are primitive and those that are more advanced. In the present context it is therefore significant that the red algae, supposedly the most primitive extant eucaryotes, not only contain sterols in substantial amounts but also that in these cells the biosynthetic pathway is modern, i.e. fully developed. Cholesterol or related cholestane derivatives are the dominant sterols in all members of the order Rhodophytae so far examined. ... 

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