A virus is an infectious agent that consists of
genetic information surrounded by a protein coat.
a small bundle of genetic material (DNA or RNA) wrapped in a protein coat (called a capsid). Some viruses may also have additional layers called envelopes, which are made up of lipids and proteins. When a virus infects a host cell, it hijacks the cell’s machinery to replicate itself and produce more virus particles.
Viruses can infect a range of organisms, including plants, animals, and bacteria. They can cause a range of illnesses, from the common cold and flu to more severe diseases like HIV, Ebola, and COVID-19.
It’s important to note that viruses are not considered living organisms because they cannot replicate or carry out metabolic processes on their own. They require a host cell to reproduce and survive.
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