Article explaining what organisms are, their cellular foundation, and how they get their energy and nutrition. (Published: May 26, 2010)

Take an interactive quiz over protists. After completing the quiz, check your score, and then revisit any incorrect question for further review.

Describes the characteristics of paramecium and how they reproduce both sexually and asexually.

Diatoms are a type of algae that reproduces both sexually and asexually. Its characteristics and methods of reproduction are described here.