Unit 2 "B" Protists

Prokaryote

Lacks a nucleus and membrane-bound organelles.

Ex: Bacteria

Eukaryote

Have a nucleus and membrane-bound organelles.

Ex: Plants & Animals

Protozoan

a single-celled microscopic animal of a group of phyla of the kingdom Protista, such as an amoeba, flagellate, ciliate, or sporozoan

Algae

A group of aquatic, photosynthetic, eukaryotic organisms ranging from unicellular to multicellular forms, and generally possess chlorophyll but lack true roots, stems and leaves characteristic of terrestrial plants

Sarcodine

belonging or pertaining to the protist that move and capture food by forming pseudopodia

Zooflagellate

any flagellated protozoan that lacks photosynthetic pigment and feeds on organic matter: often parasitic.

Sporozoan

any parasitic spore-forming protozoan, several species of which, as plasmodia, cause malaria.

Pellicle

the outer covering of a protozoan

Cilia

Microscopic, hair-like projection on the surfaces of some cells and of certain organisms.

Trichocyst

protists use this to defend/attact and anchor the organism

Contractile Vacuole

a vacuole in some protozoans that expels excess liquid on contraction

Dinoflagellate

a single-celled organism with two flagella, occurring in large numbers in marine plankton and also found in fresh water. Some produce toxins that cause "Red Tides"

Diatoms

a single-celled alga that has a cell wall of silica. Used in toothpaste and to polish metals

Chlorophyta

plant division including green algae, characterized by having chlorophyll

Rhodophyta

The red algae are one of the oldest groups of eukaryotic algae, and also one of the largest, with about 5,000-6,000 species of mostly multicellular, marine algae, including many notable seaweeds

Autotroph

Organisms that get energy by making their own food

Heterotroph

Organisms that get energy by consuming other materials