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Topics related to "protist"

desmid
desmid a protist of the class Charophyceae (see Chlorophyta ). ... Read more
Protista
Protista or Protoctista , in the five-kingdom system of classification, a kingdom comprising a variety of unicellular and some simple multinuclear and multicellular eukaryotic organisms. Protists, which are eukaryotes , have cells that have a membrane-bound nucleus, DNA that is associated with ... Read more
mildew
mildew name for certain fungi and protists, for the diseases they cause in various crops, and for the discoloration (and sometimes the weakening and disintegration) they cause in such materials as leather, fabrics, and paper. The powdery mildews usually grow on the surface of plant tissues, forming... Read more
blight
blight general term for any sudden and severe plant disease or for the agent that causes it. The term is now applied chiefly to diseases caused by bacteria (e.g., bean blights and fire blight of fruit trees), viruses (e.g., soybean bud blight), fungi (e.g., chestnut blight), and protists (e.g., pot... Read more
Monera
Monera taxonomic kingdom that comprises the prokaryotes ( bacteria and cyanobacteria ). Prokaryotes are single-celled organisms that lack a membrane-bound nucleus and usually lack membrane-bound organelles (mitochondria, chloroplasts; see cell , in biology). They have a small ring of DNA as thei... Read more
silica
silica or silicon dioxide, chemical compound, SiO 2 . It is insoluble in water, slightly soluble in alkalies, and soluble in dilute hydrofluoric acid. Pure silica is colorless to white. It occurs in several forms and is widely and abundantly distributed throughout the earth, both in the pure st... Read more
protozoan
protozoan , informal term for the unicellular heterotrophs of the kingdom Protista . Protozoans comprise a large, diverse assortment of microscopic or near-microscopic organisms that live as single cells or in simple colonies and that show no differentiation into tissues. Formerly classified in the... Read more
parasite
parasite plant or animal that at some stage of its existence obtains its nourishment from another living organism called the host. Parasites may or may not harm the host, but they never benefit it. They include members of many plant and animal groups, and nearly all living things are at some time h... Read more
ameba
ameba or amoeba , common name for certain one-celled organisms belonging to the phylum Sarcodina of the kingdom Protista . Amebas were previously classified as members of the animal kingdom. Most amebas are very small (from 5 to 20 microns in diameter) and contain a single nucleus. A. proteu... Read more
Fungi
Fungi , kingdom of heterotrophic single-celled, multinucleated, or multicellular organisms, including yeasts, molds, and mushrooms. The organisms live as parasites , symbionts, or saprobes (see saprophyte ). Previously classified in the plant kingdom, fungi are nonmotile, like plants, but lack the... Read more

Encyclopedia entries related to "protist"

Protista
Encyclopedia entry from: The Gale Encyclopedia of Science ...up to 300 ft (100 m) long. The word protist comes from the Greek word for the very...about what exactly makes an organism a protist. Protists are difficult to characterize...partners benefit, or parasitic, where the protist uses its host as a source of food or shelter...
parasite
Book article from: The Columbia Encyclopedia, Sixth Edition ...plants cause great losses among food crops and trees (see diseases of plants ). Parasites are more prevalent in the animal and protist kingdoms; most are invertebrates, chiefly worms, e.g., the fluke , tapeworm , and trichina (see trichinosis ); arthropods...
desmid
Book article from: The Columbia Encyclopedia, Sixth Edition desmid a protist of the class Charophyceae (see Chlorophyta ).
Flagella
Encyclopedia entry from: The Gale Encyclopedia of Science ...will appear oval, oblong or spiral; whereas sperm look triangular with rounded corners. Cells such as the photosynthetic protist Chlamydomonas reinhardtii, which have two flagella at one end, will appear as though they are doing the breaststroke. A...
Protozoa
Book article from: The Oxford Companion to the Earth ...or mitochondria) in the Late Archaean or Early Proterozoic (between about 3000 and 2000 million years (Ma) ago). Most protist and protozoan groups are parasitic and non-mineralized. We can infer their presence in the geological record only because...
protozoan
Book article from: The Columbia Encyclopedia, Sixth Edition ...show no differentiation into tissues. Formerly classified in the animal kingdom, they are now generally divided into five protist phyla: Mastigophora (the flagellates), Sarcodina (the amebas), Ciliophora (the ciliates), Opalinida , and Sporozoa...
Fungi
Book article from: The Columbia Encyclopedia, Sixth Edition ...compounds. In many ways fungi are more closely related to animals than to plants, and they have been thought to share a common protist ancestor with animals. A recent classification system suggested by nucleic acid (genetic material) comparisons places the...

Dictionary entries related to "protist"

protist
Book article from: A Dictionary of Plant Sciences protist A single-celled, eukaryotic organism (see EUKARYOTE ) that may resemble...grouped as a kingdom, Protista; later some multicellular organisms with protist affinities but previously classed as fungi or plants were transferred into...
Animalia
Book article from: A Dictionary of Zoology ...first appeared in the Precambrian , the sponges (Porifera) from one kind of protist forebear, and all other animals from another (or possibly more than one other) protist. The oldest fossils are burrows of a coelomate in rocks rather less than...
Protista
Book article from: A Dictionary of Zoology ...dinoflagellates, diatoms, and algae. In the widely used five-kingdom system of classification some multicellular organisms with protist affinities but previously classed as fungi or plants have been transferred into this kingdom and the name of the kingdom changed...
Protoctista
Book article from: A Dictionary of Earth Sciences Protoctista See PROTIST .

Related newspaper, magazine, and trade journal articles from HighBeam Research

Findings from University of Algarve broaden understanding of protist.
Newspaper article from: Nanotechnology Weekly; 8/11/2008; 700+ words ; ...Leite and colleagues published the results of their research in Protist (An oxygen molecular sensor, the HIF prolyl 4-hydroxylase, in the marine protist Perkinsus olseni. Protist, 2008;159(3):355-368). For additional information...
Investigators at University of Washington release new data on protist.
Newspaper article from: Electronics Newsweekly; 8/5/2009; 700+ words ; ...and colleagues published their study in Protist (High Plasticity in the Production of...Physiological and Ecological Implications. Protist, 2009;160(3):444-451). For...Publisher contact information for the journal Protist is: Elsevier GmbH, Urban & Fischer...
Giant roaming deep-sea protist.(In The News: Short news items of interest to the scientific community)
Magazine article from: Science and Children; 1/1/2009; 700+ words ; ...diverse multicellular life forms. DNA analysis confirmed that the giant protist found by Matz and his colleagues in the Bahamas is Gromia sphaerica...Texas at Austin (www.utexas.edu/news/2008/11/20/giant_protist)
New protist research from National Oceanic and Atmospheric Administration outlined.
Newspaper article from: Computer Weekly News; 8/11/2008; 686 words ; ...scientists writing in the journal Protist report. "Here, eight PKS transcripts...KS domains placed them well within the protist type I PKS clade. Thus although most...and colleagues published their study in Protist (The toxic dinoflagellate Karenia brevis...
DISCOVERY OF GIANT ROAMING DEEP SEA PROTIST PROVIDES NEW PERSPECTIVE ON ANIMAL EVOLUTION
News Wire article from: US Fed News Service, Including US State News; 11/20/2008; 700+ words ; ...animal-like traces. The giant deep sea protist, Gromia sphaerica, approaches three...Matz describe the discovery of the giant protist. (Link goes to YouTube.)With their...DNA analysis confirmed that the giant protist found by Matz and his colleagues in the...
The effect of edta on protist cysts and trophozoites.(Brief Article)
Magazine article from: Journal of the Colorado-Wyoming Academy of Science; 4/1/2001; ; 664 words ; Giardia lamblia is a parasitic protist that has the potential to contaminate water supplies. If ingested...Giara cysts, thus killing them. In this experiment, a model protist, Acanthamoeba astronyxsis, was exposed to aqueous EDTA. The...
Giant Deep-Sea Protist Provides New Perspective on Evolution
Magazine article from: Sea Technology; 1/1/2009; ; 700+ words ; ...mechanisms that explain the burst-like origin of diverse multicellular life forms. DNA analysis confirmed thai the giant protist found by Matz and his colleagues in the Bahamas is Cromia sphaerica, a species previously known only from the Arabian Sea...
Protist joins metazoan family tree. (myxozoans) (Brief Article)
Magazine article from: Science News; 10/1/1994; 619 words ; They may look a bit like single-celled organisms such as a euglena or paramecium, but the fish and worm parasites called myxozoans are not protozoans, says Richard D. Spall, a pathologist from Idaho State University in Pocatello. For years, Spall has spent much of his spare time collecting and
A genomics approach to mitochondrial evolution.(Evolution: A Molecular Point of View)(includes discussion)
Magazine article from: The Biological Bulletin; 6/1/1999; ; 700+ words ; ...comprehensive and systematic comparative study of protist mtDNAs will better address are the following...structural variation? A program to sequence protist mitochondrial DNAs In 1992, the Organelle...has determined and analyzed 11 complete protist mtDNA sequences, with 3 additional mtDNA...
Data on life sciences described by researchers at University of Algarve.
Newspaper article from: Life Science Weekly; 8/26/2008; 700+ words ; ...prolyl 4-hydroxylase, in the marine protist Perkinsus olseni.' "Adaptations to...scientists writing in the journal Protist report (see also Life Sciences...and colleagues published their study in Protist (An oxygen molecular sensor, the HIF...