LYCOS RETRIEVER 
Viruses (Living Thing): Proteins
built 256 days ago
Viruses (Living Thing) also shows up in the Retriever categories:
Viruses (Malicious Software) , and more.
Viruses (Malicious Software) , and more.
Viruses are composed of nucleic acid, proteins and, in some cases, lipids as well. Nucleic acid, which can be either DNA or RNA, encodes the genetic information that is necessary to make copies of the virus.
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Viruses consist of a central core of either DNA or RNA surrounded by a coating of protein. The core of the virus that contains the genes is the genome, while the protein coating is the capsid. Viruses have characteristic shapes. Certain viruses have the shape of an icosahedron, a 20-sided figure made up of equilateral triangles. Other viruses have the shape of a helix, a coil-like structure. The viruses that cause herpes simplex, infectious mononucleosis, and chickenpox are icosahedral.
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Viruses are much smaller, with lengths measured in millions of a millimetre. nucleic acid, which is either DNA or RNA. This is surrounded by a protein coat. Some viruses may ... be protected by an outer spikey layer called an envelope.
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Proteins