Biology Animations Carnegie Mellon's Office of Technology for Education and Department of Biological Sciences create multimedia materials for teaching and learning Biology. After an analysis of a number of Biology courses was performed to identify when and how shared concepts where taught, a team of biologists, media programmers, and learning experts came together to create animations designed to improve understanding of some of the main concepts taught in Modern Biology and Biochemistry. Phosopholipid Membranes The PCR Method - a DNA Copying Machine Lists of Nobel Prizes and Laureates The PCR Method - a DNA Copying Machine Play the Eye of the Donkey Game About the game PCR is a method by which a few fragments of DNA can be duplicated into millions in a couple of hours.
6 ways mushrooms can save the world: Paul Stamets on TED Mycologist Paul Stamets studies mycelium and lists 6 ways that this astonishing fungus can help save the world. Cleaning polluted soil, creating new insecticides, treating smallpox and maybe even the flu … in 18 minutes, he doesn’t get all the way through his list, but he has plenty of time to blow your mind. An audience favorite at TED2008. (Recorded February 2008 in Monterey, California. Duration: 17:44.) Watch Paul Stamets’ talk on TED.com, where you can download it, rate it, comment on it and find other talks and performances. DNA Structure - Contents page An Interactive Animated Nonlinear Tutorial by Eric MartzAdapted for using Jmol instead of Chime, by Angel Herráez Part of Biomodel website by Angel Herráez, Univ. de Alcalá (Spain) Disponible también en español. Também disponível em português. Auch verfügbar auf Deutsch.
DNA – The Molecule of Life What is the force at the heart of life? What is the engine that drives it forward? That links all living things from the smallest to the largest, that links families through generations, looks, personality, health, and in sickness? Scientists have searched for the answer for hundreds of years, until 1953 when two young men ran into a British pub shouting that they've discovered the secret of life.
Activation Energy and Enzymes TITLE: Activation Energy and EnzymesSOURCE: Freeman, S, Biological Science, Second Edition, Pearson Prentice Hall, Inc.© 2006 Pearson Prentice Hall, Inc.KEYWORDS: Activation energy, enzymes, exergonic reactions, ATP, activation energy, catalysts, lock-and-key model, induced-fit model Cellular Aging: Telomeres - Telomeres Are Chromosome Caps, Telomere Structure, Telomeres And Replication, Telomeres And Replicative Senescence, Telomeres And Premature Aging Syndromes Aging is a complex process that occurs on multiple levels. The end result of aging is that life span is limited in multicellular organisms. The cells that make up multicellular organisms also have limited life spans. The limitation on cellular life span is comprised of two parts: (1) cells become unable to continue dividing but remain metabolically active, and (2) at some future time cell death occurs. Many cells in the human body are continually undergoing cellular division.
Center for Brain Science To trace the longer pathways that interconnect different brain regions, CBS labs developed a genetic method to label each individual nerve cell a different color to identify and track axons and dendrites over long distances. With light microscopy, scientists image the branching patterns and connections of all the axons within a region of the nervous system in transgenic mice that express a number of different fluorescent proteins in individual neurons. The idea here is to color-code the individual “wires” and “nodes.” The images below (all courtesy of J. Lichtman) give an indication of the power of this approach. See Junk DNA - Junk DNA & Evolution The most interesting genetic homologies are in junk DNA. Often called "noncoding DNA," junk DNA has no apparent function or produce no protein but may help regulate the gene. When DNA is transcribed, pieces either do not get transcribed at all or are only partially transcribed, with no functional protein produced.
Nuclear reactor and power plant simulation Introduction This is not a lesson like the others in Radioactivity and Atomic Physics Explained but it fits in well with the lesson on nuclear power. It is a very sophisticated simulation of a pressurised water reactor (PWR), which is the most common type of nuclear power reactor in the US but not in Europe, though the principles are very similar. Using the tour