Sophia Learning
Sophia: Cytoskeleton
A brief, narrated lesson discussing the structure and function of the cytoskeleton inside a cell. [24 secs]
Estrella Mountain Community College
Estrella Mountain Community College: Cell Organization
Description of organelles. Links will take you to a glossary with pictures for many of the definitions. Ends with a quiz linked to answers.
University of Arizona
University of Arizona: Cytoskeleton Tutorial
In this interactive tutorial you will discover that the cytoskeleton is both a muscle and a skeleton, and is responsible for cell movement, cytokinesis, and the organization of the organelles within the cell.
OpenStax
Open Stax: Cytoplasm and Cellular Organelles
The organelles and cytosol, taken together, comprise a cell's cytoplasm. This interactive site provides information regarding cytoplasm and cellular organelles.