Protists

single celled, EUKARYOTIC cells (have membrane-bound organelles)

Over 100,000.

It is the idea that eukaryotic cells were formed from 2 prokaryotic organisms living together in a symbiotic relationship (both benefits)... evolved into a thing that could not live independently. The cell living inside the other became the eukaryote's organelles.

Complex living outer layer of certain protists.

Flask-shaped structure in the pellicles of some protists used to defend and anchor the organism.

Indentation on one side of a paramecium that brings food from the outside the interior of the cell.

Membrane-enclosed cavity in protists in which food in digested.

structure in paramecia and certain other protists through which waste material are emptied into the environment.

Structure in some protists that collects water and discharges it from the cell.

• 1. Under most conditions, paramecium produces asexually by binary fission.
• 2. For some circumstances, including starvation and temperature stress, paramecium will produce sexually by conjugation.

Protists that has many hairlike structures that aid in movements; belongs to the phylum Ciliophora.

Ciliophora