Viewers watch an introduction to monosaccharides, disaccharides, and polysaccharides. The processes for dehydration synthesis and hydrolysis.

This learning object demonstrates the process by which antigens are identified, processed, and presented to mediators of the cellular immune system.

In this interactive object, students examine a type of chemical bond known as the "hydrogen bond."

In this interactive object, the learner practices identifying charges on ions.

Students choose the hypothesis and practice describing bacterial colonies using the steps of the scientific method.

Roman numerals are used to identify the charges on metal cations having multiple oxidation states. Five examples are provided for practice.

Learners view several movie clips that demonstrate the use of an indicator to follow the neutralization reaction that occurs when an acid and a base are mixed. Students test their knowledge in a series of questions. Immediate feedback is given.

In this animated object, learners examine the various connective tissue layers of the muscle organ. The terms "prime mover," "synergist," "antagonist," "origin," and "insertion" are defined.