Bozeman Science
Bioenergetics
Paul Andersen introduces the concept of bioenergetics. He explains how living organisms utilize free energy in the Universe. He begins with a brief discussion of thermodynamics and Gibbs free energy. He then explains how reactions can be...
Bozeman Science
Biology
In this biology video, the instructor introduces the four main concepts behind Biology approved by The College Board—evolution, free energy, information, and systems. Individuals then listen to and see descriptions and examples of each...
Howard Hughes Medical Institute
The Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture
Got milk? Only two cultures have had it long enough to develop the tolerance of lactose as an adult. Learn how the responsible genes evolved along with the cultures that have been consuming milk. This rich film is supplied with a few...
Khan Academy
Natural Selection and the Owl Butterfly
The lecturer describes how certain characteristics develop. In this case, he discusses eye marking. The impact of environmental factors plays a huge role in the probability of successful reproduction and the fact that favorable genes...
Khan Academy
Introduction to Evolution and Natural Selection
The evidence for natural selection is presented as a random variation of a characteristic allowing a particular strain of organism to survive with a higher probability of successful reproduction. Population change over a short period of...
Khan Academy
Variation in a Species
If there are no extenuating environmental factors to ensure competition in a species, then variation is achieved by random mutation. This resource may be more useful after viewers are introduced to the concepts of alleles and the...
Howard Hughes Medical Institute
How We Get Our Skin Color
Is our skin color determined only by genetics? Explore skin science through a video and related interactive. Young biologists discover the cells of the epidermis, how melanin is made, and the factors that influence the outward appearance...