MMSC Revised Question And Answers
General Characteristics of Viruses- Introduction - -'Filterable' - filter infectious material, filter causing infection smaller than bacteria -Viruses are only active inside host cell - cannot replicate outside of a host cell --Obligate intracellular parasite (OIP) General Characteristics of Viruses- Living vs. Nonliving - -Viruses are acellular - do not have a true cell structure, no organelles -Unable to self-replicate --Viruses produced genome --Viruses do evolve - undergo mutations -Many scientists classify viruses as being nonliving because of the above characteristics General Structure of Viruses - Capsid - -Capsid (protein coat) - capsids are made up of protomers --Helical- hollow cylinder --Polyhedral- icosahedral, 20 triangular sides ---Capsomeres --Complex - bacteriophage ---Has binding fibers that allow puncture into cell wall General Structure of Viruses - Nucleocapsid - -Nucleocapsid --Capsid --Genetic material --Enzymes General Structure of Viruses - Envelope - -Components- from host membrane, lipids, glycoproteins -Properties- environmentally labile (not very stable) -Naked capsid
Información del documento
- Subido en
- 7 de julio de 2023
- Número de páginas
- 41
- Escrito en
- 2022/2023
- Tipo
- Examen
- Contiene
- Preguntas y respuestas
