Learners examine the function of each part of a microscope and follow step-by-step instructions on how to focus on a specimen. They also review the proper use and care of a microscope and test their knowledge in two drag-and-drop exercises.
In this animated object, learners view the "T" and "P" waves and the "QRS complex." A brief quiz completes the activity.
Learners read a general description of the function and structure of leaves and examine drawings and microscopic views. A matching exercise completes the learning object.
In this animated object, learners examine neutral fats, phospholipids, and cholesterol. The molecular formula and general function for each are shown.
In this animated and interactive object, learners examine ventilation, external and internal respiration, and gas transport.
In this well-illustrated object, learners examine basic floral anatomy. The flower is the reproductive organ of the angiosperm.
In this interactive learning object, learners study the parts of the brain and then test their knowledge in a drag-and-drop exercise.
In this animated object, learners examine synthesis, decomposition, exchange, and reversible reactions.
In this animated object, learners compare the mode of action of steroids with the action of amino acid-based hormones.
In this animated activity, learners examine muscle cell contraction and relaxation and consider the role of calcium ions.
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 interactive object, learners read about the seven hormones that help regulate blood glucose. A quiz completes the activity.
Learners read descriptions of the actions of the superficial skeletal muscles and see their locations. A 61-question quiz completes the activity.
In this animated object, learners examine processes that do not use ATP directly including hydrostatic pressure and facilitated diffusion with carrier proteins.
In this animated object, students observe how ATP energy is used to move substances across the cell membrane from an area of lower concentration to an area of higher concentration and when something too large needs to get in or out of a cell.
In this animated object, learners read an introduction to protein structure and function.
In this animated object, learners examine the mechanisms for gas exchange among the lungs, blood, and tissues.
Chytrids, as members of this group are known, are found everywhere. In this animated learning object, students examine the role of chytrids and their impact on the environment.
In this interactive and animated object, learners examine the characteristics, ecological importance, and lifecycle of the ascomycetes of the fungi kingdom.
In this animated activity, learners view the pathways and functions of the fasciculus gracilis and the fasciculus cuneatus.
In this animated and interactive object, learners examine the location, structure, and function of the juxtaglomerular (JG) apparatus.
In this learning activity you'll explore the food pyramid and the recommended services.
In this interactive object, learners examine the structure and function of the sense of taste.
In this animated object, learners examine the major descending tracts of the nervous system. A matching exercise completes the activity.
In this animated object, learners examine the major events that occur at the neuromuscular junction.