From The School of Biomedical Sciences Wiki
In biological terms an organism is any independent life form, whether single-celled bacteria or multi-cellular plants and animals .
In general terms a virus would not be considered to be a living organism because they are unable to live independently. That is, they can only replicate within a host cell.
A living system capable of some response to stimuli, composed of different parts which have formed a symbiotic relationship.
- ↑ http://www.nature.nps.gov/views/System/Glossary.htm#O
- ↑ 1. Wikipediaorg. 1. Wikipediaorg. [Online]. Available from: https://en.wikipedia.org/wiki/Organism [Accessed 5 December 2016].