What is covering of virus?

The covering of a virus is called the viral envelope. The viral envelope is a lipid bilayer membrane that surrounds the virus particle. The lipid bilayer membrane is made up of a phospholipid bilayer, which is a double layer of phospholipids. The phospholipids are arranged with their hydrophilic (water-loving) heads facing outward and their hydrophobic (water-hating) tails facing inward. The viral envelope also contains viral glycoproteins, which are proteins that are embedded in the lipid bilayer membrane. The viral glycoproteins are responsible for the virus's ability to bind to and enter host cells.

The viral envelope is essential for the virus's ability to infect host cells. The lipid bilayer membrane provides a barrier that protects the virus from the environment. The viral glycoproteins allow the virus to bind to and enter host cells.

Some viruses have an envelope, while others do not. Enveloped viruses include the influenza virus, the human immunodeficiency virus (HIV), and the herpes simplex virus. Non-enveloped viruses include the poliovirus, the adenovirus, and the papillomavirus.