EVERYDAY SCIENCE

Detailed explanation-1: -Viruses are small obligate intracellular parasites, which by definition contain either a RNA or DNA genome surrounded by a protective, virus-coded protein coat. Viruses may be viewed as mobile genetic elements, most probably of cellular origin and characterized by a long co-evolution of virus and host.

Detailed explanation-2: -A Parasitic Virus (also referred to as a file virus) is a type of virus that spreads by attaching itself to another program. When a program that is infected with a parasitic virus runs, the virus code runs as well, and the computer’s operating system gives the virus code the same rights as the program.

Detailed explanation-3: -All viruses are obligate pathogens as they are dependent on the cellular machinery of their host for their reproduction. Obligate pathogens are found among bacteria, including the agents of tuberculosis and syphilis, as well as protozoans (such as those causing malaria) and macroparasites.

Detailed explanation-4: -1 Answer. The viruses that live as parasites on bacteria are Bacteriophages.

Detailed explanation-5: -Viruses are intracellular obligate parasites. Ther are incapable of multiplication or survival outside a living host cell. So, they form the connecting link between the living and the dead.