Parasites are normally termed as organisms that enjoy and benefits living inside the host body. However, some parasites only need some help from the host body while some parasites like obligate parasites depend totally on the host.
Obligate parasites cannot live without their host because they constantly depend on their host to get their energy and food. Hence, if the obligate parasite is separated from the host it will die instantly. These parasites are found inside the host body, and they make use of the host body to complete their life cycle. Viruses are the common obligate parasites.
These parasites have a good attacking mechanism, and they normally attack the protein synthesis mechanism inside the body through which they can extract important nutrients that are important for their survival. Once they get the proteins that are required they begin to spread out in different parts of the body where they can access more proteins, which would further help them to spread out and multiply themselves quickly in less time.
Apart from viruses, there are various bacteria that are also obligate parasites. Unfortunately, these obligate parasites cannot be grown in a lab because they do not survive on any artificial nutrients. Hence, researchers and scientists find it very difficult to probe further into how they react when they are inside a human body. However, patients who are attacked by such obligate parasites are kept under observation to understand the behavior patterns of these parasites.
