simplest organism
1Unicellular organism — Single celled redirects here. For prison cell assignment, see Single celling. A unicellular organism, also known as a single celled organism is an organism that consists of only one cell, in contrast to a multicellular organism that consists of… …
2List of QI episodes (C series) — infobox tvseason season name = QI Series C caption = The front cover of the QI series C DVD, featuring Stephen Fry (left) and Alan Davies (right). dvd release date = 1 September 2008 country = UK network = BBC first aired = 30 September 2005 last …
3cell — n. 1. Small room, confined apartment. 2. Solitary abode; squalid, lonely dwelling. 3. Enclosed space, small cavity. 4. Elementary corpuscle, organic unit, simplest organism …
4nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… …
5circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …
6Evolutionary history of life — Although evidence of early life is scarce and often difficult to interpret, it appears that life appeared on Earth relatively soon (on the geologic time scale) after the planet had cooled enough for liquid water to be present. The dominant theory …
7protozoan — /proh teuh zoh euhn/, n., pl. protozoans, (esp. collectively) protozoa / zoh euh/, adj. Biol. n. 1. any of a diverse group of eukaryotes, of the kingdom Protista, that are primarily unicellular, existing singly or aggregating into colonies, are… …
8Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
9Life — • The enigma of life is still one of the two or three most difficult problems that face both scientist and philosopher Catholic Encyclopedia. Kevin Knight. 2006. Life Life …
10animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …
