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  • Anatomia 171 domande A branch of biology dealing with the structure of organisms.
  • Organismi 54 domande Any living biological entity, such as an animal, plant, fungus, or bacterium.
    • Eukaryota 16 domande One of the three domains of life (the others being BACTERIA and ARCHAEA), also called Eukarya. These are organisms whose cells are enclosed in membranes and possess a nucleus. They comprise almost all multicellular and many unicellular organisms, and are traditionally divided into groups (sometimes called kingdoms) including ANIMALS; PLANTS; FUNGI; and various algae and other taxa that were previously part of the old kingdom Protista.
      • Alveolata 1 quesito A group of three related eukaryotic phyla whose members possess an alveolar membrane system, consisting of flattened membrane-bound sacs lying beneath the outer cell membrane.
      • Amoebozoa 0 domande A supergroup (some say phylum) of ameboid EUKARYOTES, comprising ARCHAMOEBAE; LOBOSEA; and MYCETOZOA.
      • Animali 4 domande Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.
      • Choanoflagellata 0 domande An order of stalked, sessile, single-celled EUKARYOTES. They are considered the transitional link between the flagellated protozoa and the SPONGES, the most primitive metazoans.
      • Criptofite 0 domande A class of EUKARYOTA (traditionally algae), characterized by biflagellated cells and found in both freshwater and marine environments. Pigmentation varies but only one CHLOROPLAST is present. Unique structures include a nucleomorph and ejectosomes.
      • Diplomonadida 0 domande A group of flagellated, mostly symbiotic EUKARYOTES characterized by twofold symmetry associated with the presence of a pair of karyomastigont organellar systems. Two nuclei are attached by fibers to the flagella and there are no MITOCHONDRIA. Diplomonadida were formerly members of the class Zoomastigophora in the old five kingdom paradigm.
      • Euglenozoa 0 domande A large group of flagellated EUKARYOTES found in both free-living and parasitic forms. The flagella are present in pairs and contain unique paraxonemal rods.
      • Funghi 2 domande A kingdom of eukaryotic, heterotrophic organisms that live parasitically as saprobes, including MUSHROOMS; YEASTS; smuts, molds, etc. They reproduce either sexually or asexually, and have life cycles that range from simple to complex. Filamentous fungi, commonly known as molds, refer to those that grow as multicellular colonies.
      • Haptophyta 0 domande A group (or phylum) of unicellular EUKARYOTA (or algae) possessing CHLOROPLASTS and FLAGELLA.
      • Mesomicetozoi 0 domande A class of parasitic and saprophytic microorganisms whose origins can be traced near the animal-fungal divergence. Members of the class are typically pathogens of FISHES, but there are exceptions. There are two recognized orders: Icthyophonida and Dermocystida.
      • Oxymonadida 0 domande An order of EUKARYOTES found in the gut of termites and other insects that live on LIGNIN. MITOCHONDRIA and GOLGI APPARATUS are absent from oxymonads.
      • Parabasalidea 2 domande A group (or phylum) of flagellated, anaerobic EUKARYOTES that are endosymbionts of animals. They lack mitochondria but contain small energy-producing hydrogenosomes. The group is comprised of two major classes: HYPERMASTIGIA and TRICHOMONADIDA.
      • Piante 5 domande Multicellular, eukaryotic life forms of the kingdom Plantae (sensu lato), comprising the VIRIDIPLANTAE; RHODOPHYTA; and GLAUCOPHYTA; all of which acquired chloroplasts by direct endosymbiosis of CYANOBACTERIA. They are characterized by a mainly photosynthetic mode of nutrition; essentially unlimited growth at localized regions of cell divisions (MERISTEMS); cellulose within cells providing rigidity; the absence of organs of locomotion; absence of nervous and sensory systems; and an alternation of haploid and diploid generations.
        • Chimera 0 domande An individual that contains cell populations derived from different zygotes.
        • Glaucophyta 0 domande A phylum or class of freshwater microscopic EUKARYOTA considered to be plants or MICROALGAE. Their CHLOROPLASTS (called cyanelles) are believed to be derived from the direct endosymbiosis of CYANOBACTERIA.
        • Plant Weeds 0 domande A plant growing in a location where it is not wanted, often competing with cultivated plants.
        • Piante Commestibili 0 domande An organism of the vegetable kingdom suitable by nature for use as a food, especially by human beings. Not all parts of any given plant are edible but all parts of edible plants have been known to figure as raw or cooked food: leaves, roots, tubers, stems, seeds, buds, fruits, and flowers. The most commonly edible parts of plants are FRUIT, usually sweet, fleshy, and succulent. Most edible plants are commonly cultivated for their nutritional value and are referred to as VEGETABLES.
        • Piante Geneticamente Modificate 0 domande PLANTS, or their progeny, whose GENOME has been altered by GENETIC ENGINEERING.
        • Piante Medicinali 0 domande Plants whose roots, leaves, seeds, bark, or other constituent parts possess therapeutic, tonic, purgative, curative or other pharmacologic attributes, when administered to man or animals.
        • Piante Tossiche 0 domande Plants or plant parts which are harmful to man or other animals.
        • Rhodophyta 0 domande Plants of the division Rhodophyta, commonly known as red algae, in which the red pigment (PHYCOERYTHRIN) predominates. However, if this pigment is destroyed, the algae can appear purple, brown, green, or yellow. Two important substances found in the cell walls of red algae are AGAR and CARRAGEENAN. Some rhodophyta are notable SEAWEED (macroalgae).
        • Salt-Tolerant Plants 0 domande Plants that can grow well in soils that have a high SALINITY.
        • Alberi 0 domande Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches.
        • Viridiplantae 5 domande A monophyletic group of green plants that includes all land plants (EMBRYOPHYTA) and all green algae (CHLOROPHYTA and STREPTOPHYTA).
          • Chlorophyta 0 domande A phylum of photosynthetic EUKARYOTA bearing double membrane-bound plastids containing chlorophyll a and b. They comprise the classical green algae, and represent over 7000 species that live in a variety of primarily aquatic habitats. Only about ten percent are marine species, most live in freshwater.
          • Streptophyta 5 domande A phylum of green plants comprising CHAROPHYCEAE (streptophyte green algae) and EMBRYOPHYTA (land plants).
            • Charophyceae 0 domande A group (or class) of aquatic plants, including the streptophyte algae, that are the closest relatives to land plants (EMBRYOPHYTA).
            • Embryophyta 5 domande Higher plants that live primarily in terrestrial habitats, although some are secondarily aquatic. Most obtain their energy from PHOTOSYNTHESIS. They comprise the vascular and non-vascular plants.
              • Angiosperme 5 domande Members of the group of vascular plants which bear flowers. They are differentiated from GYMNOSPERMS by their production of seeds within a closed chamber (OVARY, PLANT). The Angiosperms division is composed of two classes, the monocotyledons (Liliopsida) and dicotyledons (Magnoliopsida). Angiosperms represent approximately 80% of all known living plants.
              • Antocerotofiti 0 domande A plant division that includes hornworts, named for the horn-like appearance of the spore-producing plant (sporophyte).
              • Briofite 0 domande A division of the plant kingdom. Bryophyta contains the subdivision, Musci, which contains the classes: Andreaeopsida, BRYOPSIDA, and SPHAGNOPSIDA.
              • Equisetum 0 domande The only living genus of the order Equisetales, class Equisetopsida (Sphenopsida), division Equisetophyta (Sphenophyta); distantly related to ferns. It grows in moist places. The hollow, jointed, ridged stems contain SILICATES.
              • Felci 0 domande Seedless nonflowering plants of the class Filicinae. They reproduce by spores that appear as dots on the underside of feathery fronds. In earlier classifications the Pteridophyta included the club mosses, horsetails, ferns, and various fossil groups. In more recent classifications, pteridophytes and spermatophytes (seed-bearing plants) are in the division, or phylum, Tracheophyta.
                • Dennstaedtiaceae 0 domande The bracken fern plant family of the order Polypodiales, class Filicopsida, division Pteridophyta.
                • Dryopteridaceae 0 domande The wood fern plant family of the order Polypodiales, class Filicopsida, division Pteridophyta.
                  • Dryopteris 0 domande A plant genus of the family DRYOPTERIDACEAE. Members contain aspidin and filicic acid.
                  • Polystichum 0 domande A plant genus of the family DRYOPTERIDACEAE.
                • Marsileaceae 0 domande A plant family of the order Hydropteridales, class Filicopsida, division PTERIDOPHYTA. They are aquatic ferns with quatrifoliate leaves resembling four leaf clover, creeping rhizome, and bean shaped sporocarps.
                • Polypodiaceae 0 domande The fern plant family of the order Polypodiales, class Filicopsida, division Pteridophyta, subkingdom Tracheobionta.
                • Pteridaceae 0 domande A plant family of the order Polypodiales, class Filicopsida, division Pteridophyta (FERNS).
              • Gimnosperme 0 domande Gymnosperms are a group of vascular plants whose seeds are not enclosed by a ripened ovary (fruit), in contrast to ANGIOSPERMS whose seeds are surrounded by an ovary wall. The seeds of many gymnosperms (literally, "naked seed") are borne in cones and are not visible. Taxonomists now recognize four distinct divisions of extant gymnospermous plants (CONIFEROPHYTA; CYCADOPHYTA; GINKGOPHYTA; and GNETOPHYTA).
              • Epatofiti 0 domande A plant division. They are simple plants that lack vascular tissue and possess rudimentary rootlike organs (rhizoids). Like MOSSES, liverworts have alternation of generations between haploid gamete-bearing forms (gametophytes) and diploid spore-bearing forms (sporophytes).
              • Lycopodiaceae 0 domande The club-moss plant family of the order Lycopodiales, class Lycopodiopsida, division Lycopodiophyta, subkingdom Tracheobionta. The common name of clubmoss applies to several genera of this family. Despite the name this is not one of the true mosses (BRYOPSIDA ).
              • Selaginellaceae 0 domande A plant family of the order Selaginellales, class Lycopodiopsida, division Lycopodiophyta, subkingdom Tracheobionta. Members contain bilobetin. The rarely used common name of resurrection plant is mainly used with CRATEROSTIGMA.
      • Retortamonadidae 0 domande A family of flagellated EUKARYOTES that live in the intestines of several invertebrate and vertebrate species.
      • Rhizaria 0 domande A large supergroup of mostly amoeboid EUKARYOTES whose three main subgroups are CERCOZOA; FORAMINIFERA; and HAPLOSPORIDA. Nearly all of the species possess MITOCHONDRIA and historically many were considered ANIMALS.
      • Stramenopiles 1 quesito A common name (but used formally) for a group of organisms that are mostly kinds of algae including BACILLARIOPHYTA; OOMYCETES; PHAEOPHYCEAE; and CHRYSOPHYCEAE. They all contain CHLOROPLASTS that are thought to have been derived from the endosymbiosis of ancient RED ALGAE.
    • Archaea 0 domande One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.
    • Batteri 27 domande One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE
    • Virus 1 quesito Minute infectious agents whose genomes are composed of DNA or RNA, but not both. They are characterized by a lack of independent metabolism and the inability to replicate outside living host cells.
    • Organism Forms 1 quesito Specific states or life cycle stages of organisms. These include post-embryonic stages of insects, symbiotic relationships between organisms, and reproductive elements such as spores.
  • Malattie 348 domande Any impairment of normal physiological function affecting all or part of an organism, esp a specific pathological change caused by infection, stress, etc, producing characteristic symptoms; illness or sickness in general.
  • Sostanze chimiche e Farmaci 207 domande Any substance used in or resulting from a reaction involving changes to atoms or molecules, especially one derived artificially for practical use and any synthetic, semisynthetic, or natural chemical substance used in the treatment, prevention, or diagnosis of disease, or for other medical reasons.
  • Tecniche ed apparecchiature analitiche, diagnostiche e terapeutiche 109 domande
  • Psichiatria e Psicologia 15 domande The branches of medicine concerned with the diagnosis and treatment of mental illness and the scientific study of all forms of human and animal behaviour, sometimes concerned with the methods through which behaviour can be modified.
  • Scienze biologiche 31 domande
  • Scienze naturali 17 domande
  • Antropologia, Formazione, Sociologia e fenomeni sociali 3 domande
  • Tecnologia, Industria, Agricoltura 7 domande
  • Discipline umanistiche 0 domande The study of literature, philosophy, and the arts.
  • Scienza dell'informazione 0 domande The field of knowledge, theory, and technology dealing with the collection of facts and figures, and the processes and methods involved in their manipulation, storage, dissemination, publication, and retrieval. It includes the fields of COMMUNICATION; PUBLISHING; LIBRARY SCIENCE; and informatics.
  • Gruppi di persone 9 domande
  • Assistenza sanitaria 45 domande
  • Caratteristiche della Pubblicazione 4 domande
  • Luoghi geografici 10 domande The study of the natural features of the earth's surface, including topography, climate, soil, vegetation, etc, and man's response to them.
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