1. Peptidoglycan -

substance found in the cell walls of bacteria that consists of sugar and amino acids.  Causes the difference between bacteria and archaea.

Extremophile -

Organism that prefers living in some of the most extreme and inhospitable conditions on Earth.

Anaerobe-

organism that cannot survive in the presence of oxygen

Thermophiles-

Organism that lives in extreme temperatures

Halophiles -

Organism that prefers extremely salty conditions.

Ciliophora-

also called ciliates, a protist that moves using cilia.  An example is a paramecium.

Sarcodina -

protist that moves using false feet called pseudopods.  An example is an amoeba.

Pseudopods -

Temporary projections from the cell wall used for movement and obtaining food.

Apicomplexa -

Protist that produce spores.  Live on a host organism, harming it in the process.