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Chemistry Carbohydrates

"Carbohydrates are macromolecules composed of carbon, hydrogen and oxygen. Biologists are interested in carbohydrates because they serve as energy storage and as structural frameworks within cells. Si ...

Physical Matter Properties - Chemical Matter Properties

"Physical matter properties include color, odor, density, melting point, boiling point and hardness. Physical properties are divided into intensive and extensive properties. Intensive properties are u ...

Cellular Energy Production

There are several types of cellular energy production. Plants produce energy from light through a process known as photosynthesis. Eukaryotic cells use their mitochondria to generate ATP through a pro ...

Organic Compounds

"Organic compounds are compounds composed of carbon, hydrogen and often oxygen or nitrogen. Organic compounds are named so because they are associated with living organisms.  Several important types o ...

Atomic Structure

"The Bohr model is a simple model of atomic structure. It is now outdated, but is still useful at the basic level. An atom has a central core called its nucleus which contains its protons (positively ...

Oscurecimiento y Calentamiento Global. Un documental de la BBC (vídeo en español)

Este documental de Horizon para la BBC emitido por Odisea, expone la teoría acerca del calentamiento global que se basa en lo que los científicos llaman oscurecimiento global. Esta teor& ...

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