Students read and test themselves on the conditions that cause specific acid/base imbalances.

Students read different definitions of "acids" and "bases." In an interactive exercise, they identify if a substance is an acid or a base.

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.

Learners view an animated presentation showing how the pH level of a cleaning solution is controlled in a closed-loop system in a manufacturing setting. A quiz completes the activity.

In this video, you'll review how every protein molecule of an organism is synthesized.

In this learning activity you'll review how every protein molecule of an organism is synthesized by that organism in a prescribed process. This activity helps students understand the fundamental life process of making protein.

Students read about the process of hair growth beginning with the joining together of amino acids.

In this animated object, learners compare the mode of action of steroids with the action of amino acid-based hormones.