simplest+organism

  • 1 Unicellular organism — Single celled redirects here. For prison cell assignment, see Single celling. A unicellular organism, also known as a single celled organism is an organism that consists of only one cell, in contrast to a multicellular organism that consists of… …

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  • 2 List of QI episodes (C series) — infobox tvseason season name = QI Series C caption = The front cover of the QI series C DVD, featuring Stephen Fry (left) and Alan Davies (right). dvd release date = 1 September 2008 country = UK network = BBC first aired = 30 September 2005 last …

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  • 3 cell — n. 1. Small room, confined apartment. 2. Solitary abode; squalid, lonely dwelling. 3. Enclosed space, small cavity. 4. Elementary corpuscle, organic unit, simplest organism …

    New dictionary of synonyms

  • 4 nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… …

    Universalium

  • 5 circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …

    Universalium

  • 6 Evolutionary history of life — Although evidence of early life is scarce and often difficult to interpret, it appears that life appeared on Earth relatively soon (on the geologic time scale) after the planet had cooled enough for liquid water to be present. The dominant theory …

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  • 7 protozoan — /proh teuh zoh euhn/, n., pl. protozoans, (esp. collectively) protozoa / zoh euh/, adj. Biol. n. 1. any of a diverse group of eukaryotes, of the kingdom Protista, that are primarily unicellular, existing singly or aggregating into colonies, are… …

    Universalium

  • 8 Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …

    Universalium

  • 9 Life — • The enigma of life is still one of the two or three most difficult problems that face both scientist and philosopher Catholic Encyclopedia. Kevin Knight. 2006. Life     Life      …

    Catholic encyclopedia

  • 10 animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …

    Universalium

  • 11 excretion — excretion1 /ik skree sheuhn/, n. 1. the act of excreting. 2. the substance excreted, as urine or sweat, or certain plant products. [1595 1605; < LL excretion (s. of excretio) that which is sifted out. See EXCRETE, ION] excretion2 /ik skree… …

    Universalium

  • 12 Dominance (genetics) — For other uses, see Dominance. A pedigree chart shows how genes are inherited. Dominance in genetics is a relationship between two variant forms (alleles) of a single gene, in which one allele masks the effect of the other in influencing some… …

    Wikipedia

  • 13 protein — proteinaceous /proh tee nay sheuhs, tee i nay /, proteinic, proteinous, adj. /proh teen, tee in/, n. 1. Biochem. any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the… …

    Universalium

  • 14 Eye — For other uses, see Eye (disambiguation), Ocular (disambiguation), Ocular, and Oculus. For taxon specific articles, see human eye, simple eye in invertebrates, mollusc eye, and arthropod eye. Eye …

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  • 15 Dawkins vs. Gould —   First edition cover …

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  • 16 human disease — Introduction       an impairment of the normal state of a human being that interrupts or modifies its vital functions. health versus disease       Before human disease can be discussed, the meanings of the terms health, physical fitness, illness …

    Universalium

  • 17 nature, philosophy of — Introduction       the discipline that investigates substantive issues regarding the actual features of nature as a reality. The discussion here is divided into two parts: the philosophy of physics and the philosophy of biology.       In this… …

    Universalium

  • 18 Trichoplax adhaerens — Taxobox name = Trichoplax adhaerens image caption = Light microscope image of Trichoplax (specimen ca. 0.5 mm across) regnum = Animalia subregnum = Metazoa superphylum = Parazoa phylum = Placozoa genus = Trichoplax species = adhaerens binomial =… …

    Wikipedia

  • 19 muscle — muscleless, adj. muscly, adj. /mus euhl/, n., v., muscled, muscling, adj. n. 1. a tissue composed of cells or fibers, the contraction of which produces movement in the body. 2. an organ, composed of muscle tissue, that contracts to produce a… …

    Universalium

  • 20 History of zoology (through 1859) — This article considers the history of zoology before the theory of evolution proposed by Charles Darwin in 1859.Pre scientific zoologyHumans have been fascinated by the other members of the animal kingdom throughout history. In early Europe, they …

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