animal virus easy definition

05/06/2019 · Animal viruses are intracellular obligate parasites, meaning that they rely on the host animal cell completely for reproduction. They use the host's cellular components to replicate, then leave the host cell to infect other cells throughout the organism.Like other viruses, animal viruses are tiny packages of protein and nucleic acid. They have a protein shell, or capsid, and genetic material made of DNA or RNA that's tucked inside the caspid. They may also feature an envelope, a sphere of membrane made of lipid. Animal virus capsids come in many shapes.17/04/2020 · Viruses are infectious agents that replicate inside the body of a host. In biology, viruses are microscopic entities that are able to replicate inside the cell of its host. The definition of viruses differs among scientists because these entities can neither be classified as living organisms nor non-living entities.Virus, infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria. Viruses possess unique infective properties and thus often cause disease in host organisms. Learn about the history, types, and features of viruses.The meaning of VIRUS is any of a large group of submicroscopic infectious agents that are usually regarded as nonliving extremely complex molecules, that typically contain a protein coat surrounding an RNA or DNA core of genetic material but no semipermeable membrane, that are capable of growth and multiplication only in living cells, and that …Viruses are small obligate intracellular parasites, which by definition contain either a RNA or DNA genome surrounded by a protective, virus-coded protein coat. Viruses may be viewed as mobile genetic elements, most probably of cellular origin and characterized by a long co-evolution of virus and host.Viruses are very small particles that can infect animals and plants and make them sick. Viruses are made up of genetic materials like DNA and are protected by a coating of protein. Viruses hijack the cells of living organisms. They inject their genetic material right into the …Viruses are tiny particles that cause disease in people, other animals, and plants. Different viruses cause the common cold, influenza (flu), chicken pox, measles, AIDS, and many other diseases. Viruses are so tiny that people can see them only with powerful microscopes. Some viruses have a spherical, or round, shape.










































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