Virus particles(virions) vary widely in size and shape. Viruses are smaller than cells, ranging in size from 0.02 to 0.3 um.A common unit of measure for viruses is the nanometer. which is 1000 times smaller than 1 um and 1 million times smaller than I mm. Smallpox virus, one of the largest viruses, is about 200 nm in diameter(a bit smaller than the size of the smallest bacteria); poliovirus, one of the smallest, is only 28 nm in diameter (about the size of a ribosome)
Virus particles (virions) vary widely in size and shape. Viruses are smaller than cells, ranging in size from 0.02 to 0.3 μm. A common unit of measure for viruses is the nanometer, which is 1000 times smaller than 1 um and 1 million times smaller than 1 mm. Smallpox virus, one of the largest viruses, is about 200 nm in diameter (a bit smaller than the size of the smallest bacteria); poliovirus, one of the smallest, is only 28 nm in diameter (about the size of a ribosome)
Si oze 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, rickettsia, and chlamydia) 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
Genome in virion RNA RNA一DN Viruses viruses vIruses SS DNA ds dNA SS RNA ds Rna SS RNA ds rna (Retroviruses Hepadnaviruses) Viral genomes. The genomes of viruses can be composed of either DNa or rna, and some use both as their genomic material at different stages in their life cycle However, only one type of nucleic acid is found in the virion of any particular type of virus. This can be single stranded(ss), double-stranded(ds), or in the case of the hepadnaviruses, partially double-stranded
Genome in virion Viral genomes. The genomes of viruses can be composed of either DNA or RNA, and some use both as their genomic material at different stages in their life cycle. However , only one type of nucleic acid is found in the virion of any particular type of virus. This can be singlestranded (ss), double-stranded (ds), or in the case of the hepadnaviruses, partially double-stranded
The comparative sizes of several viruses and bacteria: ! T Hacerochase MIS ar当 24H Totarroosir vinas CAylA fa batterer 19 n 3nm Wattana virs JIc nm x 20nm x IDO nnt Pescaanet Linnich cu 工 rm tis
The comparative sizes of several viruses and bacteria:
Structure of viruses Most viruses are too small to be seen under light microscope. All viruses consists of an RNA or DNA core genome surrounded by a protein coat capsid. The combined viral genome and capsid is called the nucleocapsid capsid Envelope Consid Card Naked virus Enveloped vrus
• Most viruses are too small to be seen under light microscope. • All viruses consists of an RNA or DNA core genome surrounded by a protein coat capsid. • The combined viral genome and capsid is called the nucleocapsid. Structure of viruses