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anon answered on 29 Apr 2020:
The structures of virus’s can differ on a case by case basis. But in the case of influenza (commonly called Flu), the virus can appear as spherical ‘buds’ or can appear as long filaments. In both cases the virus consists of an RNA genome surrounded by a lipid membrane. On the inside of the virus attached to the membrane is a layer of protein arranged as a matrix, in the case of Flu the protein in the matrix is called ‘M1’. On the outside of the virus attached to the virus are a range of ‘spike’ proteins. These are proteins that protrude from the surface of the virus and look like spikes. It is often the spike proteins that are first recognised by our immune systems and are the targets of most vaccines.
Virus’s are not classed as living things because they are unable to replicate themselves/multiply without the assistance of a host cell.
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anon-244767 commented on :
Thank you Lucy Ginger, Kim Liu, and Spyros Lytras! They were some very detailed and informative explanations. Have a great day!