protozoan classification used to be based on their means of cellular communication and differentiation.
protozoan classification used to be based on their means of cellular communication and differentiation.
protozoan classification used to be based on their means of?
cellular communication and differentiation
the body of "angomonas deanei" is elliptical in shape, with a prominent tail-like flagellum at its posterior end for locomotion. the bacterial endosymbiont is inside its body and is surrounded by two membranes typical of gram-negative bacteria, but its cell membrane presents unusual features, such as the presence of phosphatidylcholine, a major membrane lipid (atypical of bacterial membranes), and the highly reduced peptidoglycan layer, which shows reduced or absence of rigid cell wall. the cell membrane of the protozoan host contains an 18-domain β-barrel porin, which is a characteristic protein of gram-negative bacteria. in addition it contains cardiolipin and phosphatidylcholine as the major phospholipids, while sterols are absent. cardiolipin is a typical lipid of bacterial membranes; phosphatidylcholine, on the other hand, is mostly present in symbiotic prokaryotes of eukaryotic cells. for symbiotic adaptation, the host trypanosome has undergone alterations such as reduced paraflagellar rod, which is required full motility of the bacterial flagella. yet the paraflagellar rod gene "pfr1" is fully functional. the bacteria are known to provide essential nutrients to the host, and provide electron transport system for the production of cellular energy, the atp molecules through its glycosomes. the bacteria synthesise amino acids, vitamins, and haem for the protozoan. in return the protozoan offers its enzymes for the complete metabolic pathways for the biosysnthesis of amino acids, lipids and nucleotides, that are absent in the bacterium. phosphatidylinositol, a membrane lipid required for cell-cell interaction, in the bacteria is also synthesised by the protozoan. thus the two organisms intimately share and exchange their metabolic systems. when the bacterium is killed using antibiotics, the protozoan can no longer infect insects, due to the altered glycosylphosphatidylinositol (gp63) in the protozoan flagellum.
angomonas deanei
bullet::::- universal decimal classification (udc)









































other systems include:









































bullet::::- harvard-yenching classification, an english classification system for chinese language materials









































bullet::::- v-lib 1.3 (2018 vartavan library classification for over 700 fields of knowledge, based on the v-frame (http://projectis.co.uk/v-frame) and currently sold under license in the uk by projectis consultants ltd (http://projectis.co.uk/v-lib)









































bullet::::- london education classification used at the ucl institute of education









































bullet::::- garside classification scheme used in most libraries of university college london









































bullet::::- bliss bibliographic classification used in some british libraries









































section::::methods or systems.:non-english universal classification systems.









































bullet::::- german (rvk)
library classification