What's the difference between foraminifera and protist?
Foraminifera
Definition:
(n. pl.) An extensive order of rhizopods which generally have a chambered calcareous shell formed by several united zooids. Many of them have perforated walls, whence the name. Some species are covered with sand. See Rhizophoda.
Example Sentences:
(1) In a study of the rate of production of four species of planktonic Foraminifera in the region of the California Current it was found that their life spans are of the order of 1 month.
(2) The shared possession of nuclear dimorphism with non-dividing macronuclei, conjugation, and a putative heterophasic ancestry invites further investigation of the phylogenetic relationship between heterokaryotic foraminifera and karyorelict ciliates.
(3) Isotope ratios Obtained from fossil otoliths indicate a water temperature which agrees wiht that found by isotope measurements on associated benthonic foraminifera.
(4) The five tissues, extracellularly mineralizing algae, radial and granular foraminifera, mammalian bone, mammalian enamel, and mollusk shell nacre, probably span the entire spectrum.
(5) Two superkingdoms (= Domains: Prokaryotae and Eukaryotae) and five kingdoms (Monera = Procaryotae or Bacteria; Protoctista: algae, amoebae, ciliates, foraminifera, oomycetes, slime molds, etc.
(6) Oxygen isotopic comparisons of phenotypes of Recent Planktonic Foraminifera with both normal and diminutive final chambers are compatible with a model in which the latter develop as a response to environmental stress.
(7) The approximately 300 million years that make up Paleozoic time saw the evolution of eight of the fifteen recognized suborders of Foraminifera.
(8) Results are in contrast to previous evidence presented in favor of yearly life cycles and maturing at great depth in other species of planktonic Foraminifera.
(9) Analysis by the oxygen-isotope method of samples of benthonic Foraminifera, collected at different depths on the continental shelf and slope of western Cenitral America, yielded isotopic temperatures agreeing closely with the temperatures measured in the field.
(10) The extinction event that affects the planktonic foraminifera at 12 Ma BP cannot be chronologically correlated to this southwestern European land-mammal extinction event, because the calibration of the marine fossil record during that time-span has to be precise.
(11) In heterokaryotic agamonts of some Foraminifera, nuclear differentiation occurs at the diploid level, proved to be irreversible and caused by either deletion or stable repression of some genes.
Protist
Definition:
(n.) One of the Protista.
Example Sentences:
(1) Thus, a plant alpha-tubulin exhibits a high degree of homology to the alpha-tubulins of protists and animals.
(2) Molecular distances were computed between the aligned nucleotides of all presently available protist sequences and were used to derive a tentative dendrogram.
(3) The microsporidia are a group of unusual, obligately parasitic protists that infect a great variety of other eukaryotes, including vertebrates, arthropods, molluscs, annelids, nematodes, cnidaria and even various ciliates, myxosporidia and gregarines.
(4) Actin genic regions were isolated and characterized from the heterokont-flagellated protists, Achlya bisexualis (Oomycota) and Costaria costata (Chromophyta).
(5) An RNA polymerase III in vitro transcription system has been developed from the protist Acanthamoeba castellanii.
(6) Unlike the actin-encoding genes (act) of other filamentous fungi, no introns are obvious in the coding region, a feature shared with the act genes of certain protists.
(7) We have undertaken the construction of a broad molecular phylogeny of protists through the comparison of 28S rRNA molecules.
(8) Parasitic amitochondriate protists, representatives of early branches of eukaryote evolution, differ considerably in their central, energy metabolism from mitochondrion-bearing cells.
(9) The emonctory structures, functions and stereotype and their component parts are studied in protists, spongia, coelenterata and coelomata: lower worms, annelids, their hyponeurian descendents (arthropods, molluses) and epineurian descedents echinoderms and protochordates (Stomochordata, Tunicata, Cephalochordata).
(10) The most probable hypothesis is that of a symbiotic origin of the first zygote by association of two protists one signifying a spherical oocell and the other a flagellated spermatozoan; this could be the first step of the metazoan ontogenesis and therefore also of the phylogenesis.
(11) The folding for the D3, D7a and D10 divergent domains has been refined and a consensus model for the protist 24-26S rRNA structure is proposed.
(12) The classification thus seeks to offer a compromise between the protist and protoctist kingdoms of Whittaker and Margulis and to combine a full listing of phyla with grouping of these for synoptic treatment.
(13) The E. gracilis divergence far antedates a period of massive evolutionary radiation that gave rise to the plants, animals, fungi, and certain groups of protists such as ciliates and the acanthamoebae.
(14) It is suggested that, in line with comparable situations in other protists, expansion of the nuclear envelope is chiefly responsible for separation of the nucleus into two daughter nuclei.
(15) This simple binary immunological character was superimposed on a number of published protist phylogenies and seen to fit very well with some of them.
(16) The data show that the cytochrome c oxidase of the protist Euglena is different from other eukaryotic cytochrome c oxidases in number and size of subunits, and also with regard to kinetic properties and substrate specificity.
(17) The ciliated protists (ciliates) offer a unique opportunity to explore the relationship between chemoreception and cell structure.
(18) Glucokinase activities that phosphorylate glucose and glucosamine are inhibited by N-acetyl-glucosamine and xylose, were found to be present in the non-sulphur photosynthetic bacteria Rhodospirillum rubrum, the blue-green algae Anacystis montana, and the protists Chlorella pyrenoidosa and Chlamydomonas reinhardtii (green algae), Hypochytrium catenoides (Hypochytridiomycete) and Saprolegnia Iitoralis (Oomycete).
(19) This interpretation of the identity of nucleus-associated membranes differs from those previously reported for other protists, including members of the Plasmodiophorales.
(20) The reduction of flagella (cilia) is occurring in different taxa independent of the transition of protists from the flagellate type of locomotion to the amoeboid, gliding of metabolizing ones, and in the number of metazoan cells.