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macronucleus

Examples

  • The macronucleus is larger and has various shapes, from a simple round form to a The macronucleus has major duties in regulation of any somatic or. — “Moniliform macronucleus of Stentor”, microscopy-
  • Macronucleus information including symptoms, causes, diseases, symptoms, treatments, and other medical and health issues. — “Macronucleus - ”,
  • ( D) is the macronucleus, which is relatively large and located near the center of the organism, and controls most of the metabolic functions of During transverse fission the micronucleus divides first by mitosis, and the macronucleus divides later by amitosis, a simple constriction. — “Paramecium, the lowly fellers”, www1.broward.edu
  • macronucleus (biology), relatively large nucleus believed to influence many cell activities. It occurs in suctorian and ciliate protozoans (e.g., Paramecium). The macronucleus is associated with one or more smaller micronuclei, which are. — “macronucleus (biology) -- Britannica Online Encyclopedia”,
  • Instead, the job of running the cell is done by something known as the macronucleus. The details of ciliate ***, and the behavior of the micronucleus and the macronucleus, differ slightly from one species to the next; my description is taken from the. — “Unorthodox - ”,
  • A macronucleus (formerly also meganucleus) is the larger type of nucleus in ciliates. The macronucleus contains hundreds of chromosomes, each present in ~50 copies. — “Macronucleus - Wikipedia, the free encyclopedia”,
  • Details on Life Cycle of Paramecium Aurelia, Deifinition for Micronuclei and Macronucleus, Formation of Binary Fission, Gamete Nuclei, Stationary or Female Gamete, Definition of Autogamy, Application of P. aurelia. — “Life Cycle of Paramecium Aurelia, Micronuclei, Macronucleus”,
  • The macronucleus as its name suggests is typically larger with sometimes thousands of copies of the genome. The nuclei produced develop into a new macronucleus and a new micronucleus. — “Portal to Protistology: Ciliated Protozoa”, uga.edu
  • Definition of macronucleus from The American Heritage Medical Dictionary. — “macronucleus - Medical Definition”,
  • Wikipedia has an article on: Macronucleus. Wikipedia macronucleus (plural macronuclei) (biology) The larger the two nuclei present in ciliate protozoans; it controls the nonreproductive functions of the cell. These binucleated forms have one macronucleus functional and another ***ual micronucleus. — “macronucleus - Wiktionary”,
  • Macro-nucleus definition, the larger of the two types of nuclei occurring in ciliate protozoans, having a multiple set of chromosomes and functioning in cell metaboli See more. macronucleus mac·ro·nu·cle·us (māk'rō-n&oomacr;'klē-əs, -ny&oomacr;. — “Macro-nucleus | Define Macro-nucleus at ”,
  • Definition of macronucleus in the Medical Dictionary. macronucleus explanation. Information about macronucleus in Free online English dictionary. What is macronucleus? Meaning of macronucleus medical term. What does macronucleus mean?. — “macronucleus - definition of macronucleus in the Medical”, medical-
  • In the somatic macronucleus of the ciliate Tetrahymena thermophila, the palindromic rRNA gene (rDNA) and a transcriptionally active, polyploid macronucleus, con. — “Replication of an rRNA Gene Origin Plasmid in the Tetrahymena”,
  • This macronucleus houses about 15 percent fewer DNA sequences than the smaller one, and when the cell mates to create a new generation of cells, this large macronucleus withers and dies. The original macronucleus then withers away, leaving the new macronucleus and the. — “Ancient defense mechanism may still be protecting us”,
  • In Tetrahymena thermophila, when the new macronucleus differentiates, the parental macronucleus is selectively eliminated from the cytoplasm of In Tetrahymena thermophila, once the new macronucleus differentiates from the synkaryon, the parental macronucleus begins to degenerate. — “BioMed Central | Full text | Role of apoptosis-inducing”,
  • Definition of macronucleus in the Online Dictionary. Meaning of macronucleus. Pronunciation of macronucleus. Translations of macronucleus. macronucleus synonyms, macronucleus antonyms. Information about macronucleus in the free online English. — “macronucleus - definition of macronucleus by the Free Online”,
  • Development of the somatic macronucleus in some ciliates presents an extreme case, involving excision of internal eliminated sequences (IESs) that Most ciliates possess two types of nuclei: a transcriptionally active macronucleus (soma) and a germline micronucleus used for ***ual conjugation. — “The Pathway to Detangle a Scrambled Gene”, m.nih.gov
  • The larger macronucleus controls general cell activites, while the smaller micronucleus is involved in reproduction. In the paramecium, the micronucleus divides by mitosis while the macronucleus divides by a modified form of mitosis. — “Super VLB -- Classification -- Kingdom Protista -- Paramecium”, classic.sidwell.edu
  • Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. Definition of MACRONUCLEUS : a relatively large densely staining nucleus of most ciliate protozoans that is derived from micronuclei and controls various nonreproductive. — “Macronucleus - Definition and More from the Free Merriam”, merriam-
  • There is a single macronucleus, usually also surrounded by pigment granules and with up to 10 or so In the center of the body more spherical macronucleus (in vivo 20-30 microns long) with many (>20) micronuclei. — “micro*scope - version 6.0 - March, 2006”, starcentral.mbl.edu
  • Definition of macronucleus from Webster's New World College Dictionary. Meaning of macronucleus. Pronunciation of macronucleus. Definition of the word macronucleus. Origin of the word macronucleus. — “macronucleus - Definition of macronucleus at ”,
  • macronucleus n. , pl. , -clei ( ). The larger of two nuclei present in ciliate protozoans, which controls nonreproductive functions of the cell,. — “macronucleus: Definition from ”,

Videos

  • Spirostomum Teres A small spirostomum (~400 microns) with a distinctive pill-shaped macronucleus. Collected in a grassy marsh by a riverbank in Perth, Ontario.
  • PROTOZOA REMIX CHORUS Here's the song for our project on, PROTOZOA It's about paramecium caudatum Hopefully you'll learn a lot of stuff about PROTOZOA They are really, really interesting. Verse 1 They're members of the phylum Ciliophora They have cilia that line the cell membrane The cell membrane is surrounded by protein layer called a pellicle CHEA! UGH! Water sweeps food into the mouth pore The food is digested in a food vacuole Then undigested food is expelled from the *** pore The macronucleus contains the DNA The micronucleus exchanges DNA in conjugation CHORUS Here's the song for our project on, PROTOZOA It's about paramecium caudatum Hopefully you'll learn a lot of stuff about PROTOZOA They are really, really interesting. Verse 2 \ilia live in aquatic and fresh water cribs Lots of them live in small ponds and slow moving streams With plants and decaying organic matter They reproduce a***ually by binary fission This is when only the micronucleus divides by mitosis The macronucleus elongates until it splits in half Sometimes ***ual reproduction occurs by conjugation Huh? What? Conjugation! CHORUS
  • Vorticella (Glockentierchen) at work Here we see two Vorticellae ingesting bacteria etc. The scope of the video is to show the macronucleus (MA) and the contractile vacuole (CV). Please look at my website "www.dr-ralf-" for more.
  • Ciliate Cell Division -- Spirostomum sp. Spirostomum (possibly s. intermedium or s. minus), about 800 microns long, undergoing division. The macronucleus seems to be condensing and dividing, as it does in the larger species S. Ambiguum (see Ann Bishop, Quarterly Journal of Microscopical Science, October 1925). At 1:00 the creature evacuates its characteristic contractile vesicle. At 1:27 you can see what looks like a new vesicle forming in the anterior "daughter."
  • Climacostomum Climacostomum (possibly C. virens without zoochlorellae), a flexible heterotrich ciliate, ~200 microns in length, collected from a pond in Wakefield, Quebec. It has a conspicuous, curved, tubular cytopharnyx, and a large posterior contractile vacuole. Climacostomum virens, the only species that has been studied in detail, is usually described as having a long, coiled macronucleus, which is not the case in this specimen. On his excellent and useful website, Dr. Xu Kaiqin states that the macronuclues in Climacostomum "may be spherical or ribbon-like." www.nies.go.jp
  • Reading Genomes Bit by Bit - Sean Eddy, Ph.D. A Decade with the Human Genome Sequence: Charting a Course for Genomic Medicine NHGRI hosted a day-long scientific symposium on Friday, Feb. 11, 2011, 8:30 am - 5:00 pm at the Ruth L. Kirschstein Auditorium, Natcher Conference Center on the National Institutes of Health (NIH) campus. The goal of the symposium was to offer the NIH community an exciting glimpse into contemporary genomics research, illustrating how genomics can be used to further medical discoveries and how genomics relates to individuals, communities and societies. More: www.genome.gov
  • Homalozoon Vermiculaire A long ciliate (~600 microns) with a moniliform macronucleus, and a distinctive granular mass near the "mouth."
  • Synthesis of pre-rRNA and mRNA is directed to a chromatin-poor compartment in the macronucleus of t From the Springer article: Synthesis of pre-rRNA and mRNA is directed to a chromatin-poor compartment in the macronucleus of the spirotrichous ciliate Stylonychia lemnae by: Postberg, Jan; Alexandrova, Olga; Lipps, Hans J.; A 3D reconstruction illustrates that delimitated chromatin spots occasionally observed in the interior of nucleolar bodies in single optical sections are built up by chromatin invaginations into such a body, showing that they in fact are localized beyond the interior of these spherical structures. The surface was rendered using To-Pro-3 counterstaining. AVI movie file (2.9 Mb). Journal: Chromosome Research Vol. 14 Issue 2 DOI: 10.1007/s10577-006-1033-x Published: 2006-03-01