Respiratory Basics
By Wendy Dusek
In this animated and interactive object, learners examine ventilation, external and internal respiration, and gas transport.
Regional Body Parts
By Gerald Heins
In this interactive object, learners identify a person's regional body parts.
Red Blood Cells
By Barbara Liang
In this animated and interactive object, learners examine the red blood cell's life cycle and function. A brief exercise completes the activity.
Real Gases
By Dr. Miriam Douglass, Dr. Martin McClinton
In this animated activity, learners compare the van der Waals equation with the Ideal Gas Law.
Reading a Triple Beam Balance
By Jill Crowder
Students identify the parts of a triple beam balance and practice measuring the mass of objects.
Protein Synthesis (Video)
By Becky Polk-Pohlman
In this video, you'll review how every protein molecule of an organism is synthesized.
Protein Synthesis
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.
Product Yields in Chemical Reactions (Screencast)
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
Learners examine the meaning of theoretical yield, actual yield, and percent yield. They test their knowledge by solving two problems.
Pressure and Boyle's Law
By Jill Larson
Students examine standard pressure in this interactive object.
Precipitation Reactions
In this interactive and animated object, learners use solubility rules to predict when an insoluble ionic compound will precipitate in a double replacement reaction. Step-by-step examples are given.
Physiological Events at the Neural Synapse
In this learning activity you'll review information on the neural synapse.
Phase Transitions
Learners examine how melting, vaporization, and sublimation require energy input while freezing and condensation release energy.
Phase Diagrams
Learners examine phase diagrams that show the phases of solid, liquid, and gas as well as the triple point and critical point.
Phagocyte Chemotaxis
By Carol Parent-Paulson
This animated object illustrates the events leading to the migration of phagocytes into areas of tissue damage and/or bacterial presence. Learners view bacterial cell phagocytosis, its subsequent enzymatic digestion, and exocytosis.
pH and Its Basic Principles
By Joan Kornitz
In this animated object, learners view hydrogen and hydroxide ions in a solution. A brief quiz on the basic principles of the term pH completes the activity.
Percent Composition of Compounds (Screencast)
Learners examine the method used to calculate the mass percent of an element in a compound. Three examples and one problem illustrate the method.
Peptide Bond Formation
By Richard Wilkosz
In this animated object, learners examine the formation of peptide bonds through dehydration synthesis.
Passive Transport: Filtration and Facilitated Diffusion
In this animated object, learners examine processes that do not use ATP directly including hydrostatic pressure and facilitated diffusion with carrier proteins.
Parasite Matching Exercises
By Elizabeth Yoon
Learners match the names of parasitic organisms to the diseases they cause and the modes of transmission.
Oxidation-Reduction Reactions
Learners examine the meaning of oxidation, reduction, and half-reaction, and watch a film showing the deposition of copper metal from the reduction of copper (II) ion by aluminum. A brief quiz completes the activity.
Oxidation States of Ions
Learners examine the periodic table to identify metallic elements that have either fixed or variable oxidation states.
Oxidation Numbers
Learners assign oxidation numbers to atoms in neutral compounds and in polyatomic ions. Six examples are worked through in detail, and three problems are provided.
Newton's Third Law of Motion - Video
By Kim Ristow
In this learning activity you'll examine Newton's Third Law: for every action, there is an equal but opposite reaction.
Newton's Second Law of Motion - Video
In this learning activity you'll examine force, mass, and acceleration to understand this "Law of Acceleration."
Newton's First Law of Motion - Video
The learner views several animations to study Newton's First Law of Motion, also known as "The Law of Inertia."