Virus Definition And Examples

Viruses are mysterious biological agents which.

Virus definition and examples. Learn about the history types and features of viruses. Examples of common human diseases caused by viruses include the common cold influenza chickenpox and cold sores. The relative ability of viruses to cause disease is described in terms of virulence. A virus is a chain of nucleic acids dna or rna which lives in a host cell uses parts of the cellular machinery to reproduce and releases the replicated nucleic acid chains to infect more cells.

Many serious diseases such as rabies ebola virus disease aids hiv avian influenza and sars are caused by viruses. An extremely small piece of organic material that causes disease in humans animals and plants. Virus definition 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 cause various important diseases in humans animals and plants. Most people chose this as the best definition of virus examples.

Virus infectious agent of small size and simple composition that can multiply only in living cells of animals plants or bacteria. The definition of a virus is an extremely tiny parasite that can only reproduce if it is within a living being or anything that corrupts something else. An example of a virus is a set of harmful instructions which is placed on a computer to disrupt the operation of the computer. A virus is often housed in a protein coat or protein envelope a protective covering which allows the virus to survive between hosts.

See the dictionary meaning pronunciation and sentence examples. The chickenpox flu herpes mumps virus evidence suggested that the aids virus was spreading very quickly among the heterosexual community. An example of a virus is hiv. The style and purpose of.