Hosts The particular host range of a virus is determined by the virus's requirements for its specific attachment to the host cell and the availability within the potential host of cellular factors required for viral multiplication. Three main classes animal viruses,bacterial viruses (bacteriophages),and plant viruses
Hosts The particular host range of a virus is determined by the virus's requirements for its specific attachment to the host cell and the availability within the potential host of cellular factors required for viral multiplication. Three main classes - animal viruses, bacterial viruses (bacteriophages), and plant viruses
Size Viruses vary considerably in size.Although most are quite a bit smaller than bacteria,some of the larger viruses (such as the smallpox virus)are about the same size as some very small bacteria (such as the mycoplasmas, rickettsias,and chlamydias). Viruses range from 20 to 300 nm in diameter
Viruses vary considerably in size. Although most are quite a bit smaller than bacteria, some of the larger viruses (such as the smallpox virus) are about the same size as some very small bacteria (such as the mycoplasmas, rickettsias, and chlamydias). Size Viruses range from 20 to 300 nm in diameter
The comparative sizes of several viruses and bacteria: 225 ●Ena Adenovir:s 0m×0am ●24nm r (a bacter.em) ●30nm 1 nm 200nm Vacdinia virus 3enm×201m×100nm
The comparative sizes of several viruses and bacteria:
Virus particles (virions)vary widely in size and shape.Viruses are smaller than cells,ranging in size from 0.02 to 0.3 um.Smallpox virus,one of the largest viruses,is about 200 nm in diameter; poliovirus,one of the smallest,is only 28 nm in diameter
Virus particles (virions) vary widely in size and shape. Viruses are smaller than cells, ranging in size from 0.02 to 0.3 um. Smallpox virus, one of the largest viruses, is about 200 nm in diameter; poliovirus, one of the smallest, is only 28 nm in diameter
Genome in virion DNA RNA RNA-DNA viruses viruses viruses SSDNA dsDNA SSRNA dsRNA ssRNA dsDNA (Retroviruses) (Hepadnaviruses)
Genome in virion