NEET BIOLOGY

Detailed explanation-1: -Viruses are obligate parasites that require the metabolic capabilities of a host to replicate their DNA or RNA and to produce “infectious” viral particles that can restore and maintain their life cycle.

Detailed explanation-2: -Obligate parasites are organisms that require a host for the completion of their life cycle. The obligate parasites cannot synthesise their food, instead, they are dependent on the host for food. Bacteria, plants, and fungi all have examples of obligate parasites. All viruses are known to be obligate parasites.

Detailed explanation-3: -The parasite that depends entirely on its host is called an obligate parasite whereas the parasite that does not rely entirely on a host is referred to as a facultative parasite. Because it is obligate parasitism, keeping the host “alive” is essential because the parasite needs the host for its growth and reproduction.

Detailed explanation-4: -In microbiology: Viruses. All viruses are obligate parasites; that is, they lack metabolic machinery of their own to generate energy or to synthesize proteins, so they depend on host cells to carry out these vital functions.

Detailed explanation-5: -A parasitic organism that requires the host organism to complete its life cycle is known as an obligate parasite. A parasitic organism that is able to complete and continue its life cycle even in the absence of the host is known as a facultative parasite.