This module provides a "skill check" with questions for students to gauge their general understanding of both prokaryotic and eukaryotic cells and their characteristics. Also contained are four content modules on the following: Introduction to cells Prokaryotic and eukaryotic cells Tour of a eukaryotic cell (major organelles and other important structures) Extracellular structures and cell-cell junctions. Content modules include videos, articles, figures, and illustrations, though the majority are videos. Users/students can also ask questions at the end of each module, and a the community of users have the option to volunteer answers to help clarify understanding or discuss the question further. Email Resource