In part one of this program, chemistry authorities, including "Helium Man" and two janitors, lay down the law-Boyle's Law, Graham's Law, and Dalton's Law. They also present the Kinetic Molecular Theory and the Ideal Gas Equation and elaborate on partial pressures and the difference between diffusion and effusion. Part two investigates kinetic energy; ion-dipole, dipole-dipole, and London dispersion forces; hydrogen bonds; phase diagrams; and vapor...

In this virtual journey through the cell, viewers become familiar with cells and their properties. The program describes and shows examples of cells of many shapes and sizes, and explores the structure and functions of different types of cells. Eukaryotes and prokaryotes are defined, and plant and animal cells are compared. Emphasizing cells as the basic building blocks of all organisms, another segment describes the organization of cells and the...

For thousands of years, humankind has known the specific characteristics of various species. Over the centuries, we have learned that plants can be modified and animals can be bettered through selective breeding. Genetic engineering was common practice in the field and stable long before it was born in the laboratories of scientists. In this program, explore manipulation and transference of genetic information from one organism to another, the present...

The saying "You are what you eat" is oh-so-true-especially for little ones. This video explains the importance of good nutrition for newborns, infants, and toddlers and examines its beneficial effects on their growth and development. Filled with how-to and when-to advice, the video also discusses the relative merits of breastfeeding and bottle-feeding, potential food allergies, the importance of a balanced diet and physical activity even at a young...

Two of the most aggressive and deadly forms of cancer may soon become the targets of powerful drugs that work in tandem with the body's own immune system. This program explores recent research in the development of biochemical weapons to fight brain and skin cancer. Visiting a German pharmaceutical company at the forefront of these advances, the film shows how TGF (transforming growth factor) beta proteins create a protective layer around brain tumors...

This video highlights the important cell processes necessary for life, including cell growth, cell division and the processes of diffusion, respiration, and osmosis. The different ways cells obtain, use, and release energy are outlined. Other terminology includes: metabolism, active transport, passive transport, mitosis, meiosis, asexual reproduction, sexual reproduction, and fermentation.

Students will learn about the discovery of cells, the development of the cell theory, and the differences between animal cells and plant cells, Animations illustrate the different parts of a cell. Other terminology includes: organelles, cell wall, cell membrane, cytoplasm, mitochondria, ribosomes, vacuole, nucleus, chromosomes, and lysosomes.

This video highlights the important cell processes necessary for life, including cell growth, cell division and the processes of diffusion, respiration, and osmosis. The different ways cells obtain, use, and release energy are outlined. Other terminology includes: metabolism, active transport, passive transport, mitosis, meiosis, asexual reproduction, sexual reproduction, and fermentation.

A dichotomous key is a tool for classifying organisms based on how similar they are to each other. It involves asking a series of questions, each with only two possible answers.

The future of cancer therapies will be on the cellular level. In this ABC News report, Dr. Timothy Johnson discusses with Dr. Nancy Davidson the advances in personalized or targeted therapies. These advances have reduced the mortality rate of those diagnosed with certain types of cancer and enabled the U.S. to have more than ten million cancer survivors.