Muscle Cell Contraction
By Barbara Liang
In this animated activity, learners examine muscle cell contraction and relaxation and consider the role of calcium ions.
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.
The Actions of Hormones
In this animated object, learners compare the mode of action of steroids with the action of amino acid-based hormones.
By Wendy Dusek
In this animated and interactive object, learners examine ventilation, external and internal respiration, and gas transport.
Atomic Structure and Ionic Bonding
By Jill Larson
In this animated object, learners examine the chemistry behind table salt.
The Sense of Taste
In this interactive object, learners examine the structure and function of the sense of taste.
Respiratory System Gas Exchange
By Bruce Forciea
In this animated object, learners examine the mechanisms for gas exchange among the lungs, blood, and tissues.
By Debbie McClinton, Dr. Martin McClinton
Students read an explanation of chemical formulas in this animated activity. A quiz completes the object.
The Structure of the Muscle Organ
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.
An Overview of Pulmonary and Systemic Circulation
In this animated and interactive object, learners examine how blood flows through the heart and lungs. A brief quiz completes the activity.
The Axial Skeleton: The Skull and the Rib Cage
In this animated object, learners examine the eight cranial bones, the fourteen facial bones, and the ribs.
The Vertebral Column
Learners read a brief description of the vertebral column and examine the distinctive features of the cervical, thoracic, and lumbar vertebrae.
The Autonomic Nervous System - Sympathetic Division
Learners examine the function and wiring of the sympathetic nervous system.
Peptide Bond Formation
By Richard Wilkosz
In this animated object, learners examine the formation of peptide bonds through dehydration synthesis.
By Jonathan Harris
In this animated learning object, students examine the life cycles of a virus.
The Organization of the Human Body: Body Cavities
In this interactive object, learners examine the locations of major body cavities and their protective membranes. A drag-and-drop exercise completes the activity.
Measuring Gas Pressure
By Dr. Miriam Douglass, Dr. Martin McClinton
Learners convert units used to designate pressure. Units for pressure are atm, mm Hg, torr, and pascal.
The Effect of Temperature on the Vapor Pressure of a Liquid
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
Learners examine how vapor pressure is calculated. The vapor pressure of a liquid increases with increasing temperature. If the heat of vaporization and the vapor pressure at one temperature are known, the vapor pressure at a second temperature can be calculated.
Learning the Elements of the Periodic Table by Name or Symbol
By Mona Wenrich
Students practice identifying common elements from the periodic table by name or symbol.
Correlation of Colony Morphology with Gram Stain Results
By Pat Griffin, Mary Beth Boettcher, Marise Hussey
Students choose the hypothesis and practice describing bacterial colonies using the steps of the scientific method.
The Neuromuscular Junction
In this animated object, learners examine the major events that occur at the neuromuscular junction.
The Plant Kingdom: An Introduction
Learners read about the mutations that occurred in plants for the successful transition from an aquatic to a terrestrial existence. The classification of plants is based on these adaptive structures.
In this well-illustrated activity, learners examine the three types of intermolecular forces: dipole-dipole forces, London or Van der Waals forces, and the hydrogen bond. Two interactive questions are included.
Ions are electrically charged particles obtained from an atom or from a chemically bonded group of atoms by adding or removing electrons. Eight examples illustrate the number of protons, neutrons, and electrons in positive ions (cations) and in negative ions (anions).
Learners read the definition of atomic weight and obtain the weights of elements by viewing the Periodic Table and charts that list atomic weights by name or symbol.