WebFrústula pennada (esquerda) e central (dereita) de diatomeas da obra de Ernst Haeckel de 1904 Kunstformen der Natur. A frústula[ 1] ou frústulo[ 2][ 3] é a parede celular dura e porosa das diatomeas (algas unicelulares), que está composta case na súa totalidade por sílice (óxido de silicio hidratado) amorfo procedente do ácido ... WebDiatoms are a major group of microalgae, and are among the most common types of phytoplankton. Diatoms are unicellular, although they can form colonies in the shape of filaments or ribbons (e.g. Fragilaria), fans (e.g. Meridion), zigzags (e.g. Tabellaria), or stars (e.g. Asterionella). The first diatom formally described in scientific literature, the colonial …
Frústula - Wikipedia, a enciclopedia libre
WebNavicula is a genus of boat-shaped diatom algae, comprising over 1,200 species. Navicula is Latin for "small ship", and also a term in English for a boat-shaped incense-holder.. Diatoms — eukaryotic, primarily aquatic, single-celled photosynthetic organisms — play an important role in global ecology, producing about a quarter of all the oxygen within … WebLes diatomees o bacil·lariofícies (Bacillariophyceae) són una classe d'algues unicel·lulars microscòpiques (encara que n'existeixen algunes que formen colònies), que s'enquadra dintre del fílum Heterokontophyta, superfílum Chromista, regne protoctist, domini Eukarya.El nom científic de la classe és Bacillariophyceae (o Diatomeae) i es relaciona … should i pay my hecs debt off
ADN cloroplástico - Wikipedia, a enciclopedia libre
Webdi·a·tom. (dī′ə-tŏm′) n. Any of various microscopic one-celled or colonial heterokonts of the class Bacillariophyceae that are photosynthetic, have a silica cell wall made up of two … WebA frustule is usually composed of two identically shaped but slightly differently sized thecae. The theca which is a bit smaller has an edge which fits slightly inside the corresponding edge of the larger theca. This overlapping region is reinforced with silica girdle bands, and constitutes a natural "expansion joint." WebDescrição. O termo «diatomácea» deriva do grego clássico diá-tom-os 'cortado a meio', de diá, 'através' ou 'dividido'; e da raiz de tém-n-ō, 'cortar'), [17] uma referência à … satter investments chicago