Matching Pairs WKMS Classification of Living ThingsOnline version WKMS Science Vocabulary by Jamie Bowen 1 cell 2 genus 3 kingdom 4 scientific name 5 organism 6 species 7 binomial nomenclature 8 homeostasis first and largest category for classifying organisms two-word naming system giving organisms their scientific name smallest unit of an organism that carries on life functions any living thing a group of closely related organisms group of similar species name of an organism that consists of the genus and species regulation of an organism's internal, life-maintaining conditions