NEET | NTA NEET | NEET UG EXAM | BioLogical
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- Viruses are not considered to be living organisms as they cannot reproduce or carry out metabolic activities on their own.
- Viruses are small infectious agents that are composed of genetic material (DNA or RNA) enclosed in a protein coat called a capsid.
- They are able to infect all types of living organisms, including animals, plants, and bacteria.
- Viruses are able to replicate by taking over the host cell's machinery to produce viral components.
- Viruses can cause a wide range of diseases, from the common cold to more serious illnesses such as HIV/AIDS, HPV and influenza.
- Viruses are classified based on the type of genetic material they contain, the shape of their capsid, and their host range.
- Some viruses can remain latent within a host organism for long periods of time before becoming active again.
- Virus can be treated with antiviral drugs that target specific viral enzymes, but there is no cure for viral infections, generally the host's immune system is responsible for eliminate the virus.
- Vaccines can be used to prevent viral infections by stimulating the immune system to produce a response against specific viral antigens, making it less likely that the host will be infected by the virus if exposed to it later on.
- The study of viruses is known as virology and the discovery and development of new drugs and vaccines against viral diseases is an active area of research.
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