Dental x-rays are generated in the dental x-ray tube. Through this animated learning object, students will learn the steps in x-ray generation from turning on the x-ray unit to exposing the dental x-ray film.

In this interactive object, learners read the definitions of terms related to moral and ethical principles. They then use a process to analyze an ethical dilemma in a health care setting.

In this interactive object, learners review the parts of the gastrointestinal system and then check their knowledge in a matching exercise.

Learners review a graphic summary of the three series of reactions that occur during cellular respiration and the net energy (ATP) yield of that process.

In this learning activity you'll assemble the components of a prokaryotic cell and match the names and functions with each structure.