Resource takes a look at the structure and function of the organelles mitochondria and chloroplasts. It also examines endosymbiosis, where the organelles probably came from.

Eukaryotic cells have separate DNA from mitochondria and chloroplasts which indicates that they were once primitive cells on their own. This multimedia article includes animations, pictures, video, biographical information, and quiz...

A basic explanation of how chloroplasts and mitochondrion produce energy within the cell. Various terms presented are explained in a clear and easily understandable manner.

The Tree of Life is a multi-authored, Internet distributed project containing information about phylogeny and biodiversity. The Tree of Life can be used to locate information about a particular group of organisms through their taxonomy.

[Free Registration/Login may be required to access all resource tools.] Learn about the evolution of eukaryotes which is explained by the endosymbiotic theory.

The materials on this page were prepared by a high school teacher for a Biology class. This section supports a unit on cell energy and includes course readings, lab notes, PowerPoints and diagrams.

The cell is the structural and functional unit of life. This unit covers the cell from the outside to the inside. It contains 18 interactive activities.

A multiple-choice quiz on the processes of respiration and photosynthesis in plants.

[Free Registration/Login may be required to access all resource tools.] Take a close look at the endosymbiotic theory scientists have developed to explain the evolution of eukaryotes. Understand that chloroplast and mitochondria used to...

Description of organelles. Links will take you to a glossary with pictures for many of the definitions. Ends with a quiz linked to answers.

This tutorial compares prokaryotic and eukaryotic cellular organization and contrasts cells with viruses. Includes a practice quiz to test your knowledge.

Teacher lesson plan on cell organelles description and function using advertising.

This activity offers an alternative to cell models to help the students to understand cells and their functions. Students are required to produce a travel brochure that describes a plant or animal cell as if it were a large exhibit or...

Brief description of all the organelles.