Tag: host

Introduction A parasite is an organism which lives on or in another organism called the host. The parasite needs the host to live, but the host gains no

Introduction Viruses are small particles which infect living cells; this makes them obligate intracellular parasites. They have no reproductive mechanisms of their own so instead must use host

Introduction Bacteria exist naturally on many biological surfaces, for example the skin or the lining of the intestines. Bacteria like these make up the body’s natural flora and