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Hace 1 día · A microorganism, or microbe, is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells.. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from sixth century BC India. The scientific study of microorganisms began with their observation under the microscope in the 1670s by Anton van Leeuwenhoek.
Hace 3 días · Archaea (/ ɑːr ˈ k iː ə / ⓘ ar-KEE-ə; sg.: archaeon / ɑːr ˈ k iː ə n / ar-KEE-ən) is a domain of single-celled organisms.These microorganisms lack cell nuclei and are therefore prokaryotic.Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaebacteria kingdom), but this term has fallen out of use.. Archaeal cells have unique properties ...
Hace 4 días · Bacteria (/ b æ k ˈ t ɪər i ə / ⓘ; sg.: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell.They constitute a large domain of prokaryotic microorganisms.Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats.Bacteria inhabit soil, water, acidic hot springs ...
25 de may. de 2024 · protozoan, organism, usually single-celled and heterotrophic (using organic carbon as a source of energy), belonging to any of the major lineages of protists and, like most protists, typically microscopic. All protozoans are eukaryotes and therefore possess a “true,” or membrane-bound, nucleus. They also are nonfilamentous (in contrast to ...
Hace 2 días · Marine life, sea life, or ocean life is the plants, animals, and other organisms that live in the salt water of seas or oceans, or the brackish water of coastal estuaries. At a fundamental level, marine life affects the nature of the planet. Marine organisms, mostly microorganisms, produce oxygen and sequester carbon.
Hace 3 días · Toxoplasma gondii ( / ˈtɒksəˌplæzmə ˈɡɒndi.aɪ, - iː /) is a parasitic protozoan (specifically an apicomplexan) that causes toxoplasmosis. [3] Found worldwide, T. gondii is capable of infecting virtually all warm-blooded animals, [4] : 1 but felids are the only known definitive hosts in which the parasite may undergo sexual reproduction.
Hace 3 días · Dinoflagellate. The dinoflagellates (from Ancient Greek δῖνος (dînos) 'whirling', and Latin flagellum 'whip, scourge') are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata [5] and are usually considered protists. Dinoflagellates are mostly marine plankton, but they also are common in freshwater ...
