@gaMalsteva99CyanobacteriaEubacteria
True nucleus True nucleus PROKARYOTES PROKARYOTES BACTERIA BACTERIA ARCHAEA ARCHAEA EUKARYOTES EUKARYOTES Prokaryotes Eubacteria Cyanobacteria Intron
Pathogenic ProkaryotesBacteriaMycoplasmaSpirochetesChlamydiaeRickettsiaActinomycesSHIHEZI UNIVERSITY
Pathogenic Prokaryotes Mycoplasma Bacteria Spirochetes Rickettsia Chlamydiae Actinomyces SHIHEZI UNIVERSITY
uroidEukaryoHcontractileracueleAlProtozoa
Eukaryotes Algae Fungi Protozoa all organisms that produce O2 as a product of photosynthesis. One major subgroup of these organisms— the bluegreen bacteria, or cyanobacteria— are prokaryotic and no longer are termed algae Protozoa are unicellular nonphotosynthetic protists. Belongs to Parasitology Mold Yeast
PrionA kind of infectious protein that can resist thedigestion of proteinaseThe cellular form of the prion protein (PrPc) isencoded by the host's chromosomal DNAAn abnormal isoform of this protein (PrPres) is theonly known component of the prion and is associatedwith transmissibilityKuru, Creutzfeldt-Jakob disease (CJD), GerstmannStraussler-Scheinker disease, fatal familial insomniaand Bovine spongiform encephalopathy (BSE
Prion A kind of infectious protein that can resist the digestion of proteinase The cellular form of the prion protein (PrPc) is encoded by the host’s chromosomal DNA An abnormal isoform of this protein (PrPres) is the only known component of the prion and is associated with transmissibility. Kuru, Creutzfeldt-Jakob disease (CJD), GerstmannSträussler-Scheinker disease, fatal familial insomnia , and Bovine spongiform encephalopathy (BSE)
ViroidSmall single-stranded covalently closed circularRNA molecules existing as highly base-pairedrod-like structures: they do not possess capsidThey range in size from 246 to 375 nucleotides inThe RNA molecule contains no protein-encodingThe RNAs of viroids have been shown to containinverted repeated base sequences at their 3' and 5'ends, a characteristic of transposable elements andretroviruses. Thus, it is likely that they have evolvedfrom transposable elements or retroviruses by thedeletion of internal sequencesSHIHEZIUNIVERSITY
Viroid Small, single-stranded, covalently closed circular RNA molecules existing as highly base-paired rod-like structures; they do not possess capsids They range in size from 246 to 375 nucleotides in length. The extracellular form of the viroid is naked RNA— there is no capsid of any kind The RNA molecule contains no protein-encoding genes, and the viroid is therefore totally dependent on host functions for its replication The RNAs of viroids have been shown to contain inverted repeated base sequences at their 3' and 5' ends, a characteristic of transposable elements and retroviruses. Thus, it is likely that they have evolved from transposable elements or retroviruses by the deletion of internal sequences SHIHEZI UNIVERSITY