In this colorful, interactive object, learners examine nervous and epithelial tissue composition and function. A quiz completes the activity.

In this animated object, students observe how ATP energy is used to move substances across the cell membrane from an area of lower concentration to an area of higher concentration and when something too large needs to get in or out of a cell.

In this animated object, learners examine the different types of joints and their movements.

In this animated learning object, learners examine the regulation of inducible operons in bacterial systems.