CK12 Life Science

(Marvins-Underground-K-12) #1

Vocabulary


autotroph Organism that produces complex organic compounds from simple inorganic
molecules using a source of energy such as sunlight.


cilia Thin, tail-like projections that extend about 5–10 micrometers outwards from the cell
body; beat back and forth, propelling the protist along.


filter-feeding Characteristic of flagellates; acquire oxygen and nitrogen by constantly
whipping the flagellum back and forth; creates a current that brings food into the
protist.


flagellum A tail-like structure that projects from the cell body of certain prokaryotic and
eukaryotic cells, and it usually functions in helping the cell move.


heterotroph Organism which obtains carbon from outside sources.


protist Eukaryotic organism that belongs to the kingdom Protista; not a plant, animal or
fungi.


protozoa Animal-like protists


transient pseudopodia A moving fake foot; the cell surface extends out a membrane and
the force of this membrane propels the cell forward.

Free download pdf