Diagram a typical virus particle. Be able to name and state the function of the component...

Diagram a typical virus particle. Be able to name and state the function of the component structures.

Expert Solution

Virus are the smaller noncellular molecules with DNA or RNA as genetic material enclosed in a coat protein. Stucture of a virus varies depending upon size, shape and chemical composition but all the viruses have a nucleocapsid which contains DNA or RNA surrounded by a coat protein.

The coat protein or the capsid protects the viral genome from endonuclease during pathogenesis. Some viruses contain a membranous envelope besides the nucleocapsid.

Envelope containing viruses contains glycoproteins called spikes.

Viral genomes may consist DNA or RNA either double stranded or single stranded.

Fig1 is a structure of a typical virus with nucleocapsid , envelope , viral genome , viral tegument or viral matrix which contains proteins for viral replication.

Fig 2 is a structure of a HIV or human immunodeficiency virus. It is a enveloped virus and the envelope contains spikes made up of glycoprotein , this glycoproteins work as a receptor for CD4 for the host cell.

gladiator answered 2 years ago

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