algae
plantlike protists
amoebas
Have pseudopodia, or "false feet", for movement
apicomplexans
parasitic protozoans
archaea
Single-celled, no nucleus, Live in harsh condisions, oldest organisms on earth
bacilli
rod-shaped spore-forming bacteria
bacteria
extremely small, single-celled organisms without a nucleus; prokaryotic cells
binary fission
a form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size
biogenesis
theory that living things come only from other living things
bioremediation
the act of treating waste or pollutants by the use of microorganisms (as bacteria) that can break down the undesirable substances
cellular slime molds
Cellular slime molds are decomposers that live mainly on decaying organic matter. They go through unicellular and multicellular stages of life where they go from an individual, to a colony, to a spore.
chemoautotrophs
An organism that needs only carbon dioxide as a carbon source but that obtains energy by oxidizing inorganic substances.
chemoheterotrophs
An organism that must consume organic molecules for both energy and carbon.
ciliates
a type of protozoa that moves using hairlike cilia
cocci
any spherical or nearly spherical bacteria
diatoms
A unicellular photosynthetic alga with a unique, glassy cell wall containing silica.
dinoflagellates
Algae that have a platelike armor and can cause red tides
endospores
A thick-walled protective spore that forms inside a bacterial cell and resists harsh conditions
endosymbiosis
a mutually beneficial relationship in which one organism lives within another
endotoxins
a poisonous component of the cell walls of certain bacteria
eukaryote
an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus.
exotoxins
a poisonous protein secreted by certain bacteria
flagellates
a type of protozoa that moves using whiplike appendages called flagella
forams
a marine protozoan that secretes a shell and extends pseudopodia through pores in its shell
green algae
Photosynthetic protists that include unicellular, colonial, and multicellular species with grass green chloroplasts; closely related to true plants.
pathogens
organisms that cause disease
photoautotrophs
an organism that obtains energy from sunlight and carbon from CO2 by photosynthesis
photoheterotrophs
an organism that obtains energy from sunlight and carbon from organic sources
plankton
algae and other organisms, mostly microscopic, that drift passively in ponds, lakes and oceans
plasmodial slime mold
A type of protist that has amoeboid cells, flagellated cells, and an amoeboid plasmodial feeding stage in its life cycle.
prokaryote
a microscopic single-celled organism, including the bacteria, that has neither a distinct nucleus with a membrane nor other specialized organelles.
protists
eukaryotes that cannot be classified as animals, plants, or fungi
protozoans
a protist that lives primarily yb ingesting food; a heterotrophic, animal-like protist
pseudopodia
an extension of the cell membrane and cytoplasm of a cell; usually used for loco motion or feeding
ribozymes
an enzymatic RNA molecule that catalyzes chemical reactions
seaweeds
large, multicellular algae, grow on shores, closest relatives are unicellular algae
spirochetes
spiral-shaped bacteria that have flexible walls and are capable of movement
spontaneous generation
the mistaken idea that living things arise from nonliving sources
symbiosis
the living together in mutually helpful association of two dissimilar organisms
api
the tip
archae
ancient
bacill
a little stick
bi
two
bio
life
genesis
origin
chemo
chemical
auto
self
dinos
whirling
endo
inner
exo
outside
flagell
a whip
hetero
different
patho
disease
photo
light
planktos
wandering
protos
first
zoan
animal
pseudo
false
pod
foot
spiro
spiral
sym
together