Final answer:
A virus consists of genetic material (DNA or RNA) encased in a protein coat known as a capsid, which is made up of capsomeres. The capsid protects the genetic material and helps the virus infect host cells.
Step-by-step explanation:
A virus is composed of an inner core of either DNA or RNA and a capsid composed of protein subunits. This capsid is constructed from multiple capsomeres, which are individual protein molecules that interlock to form the protective layer around the nucleic acid. The capsid provides not only protection for the genetic material but also aids in the transmission of the virus into host cells, facilitating the infection process.
A virus is composed of an inner core of either DNA or RNA and a capsid composed of protein subunits.The morphology of viruses can be diverse, but all viruses share this common structure of a nucleic acid core sheathed by a protein coat. Importantly, viruses do not possess a cellular structure and rely on a host to replicate, distinguishing them from living organisms.