Mitosis Continuamos con el tema de las Animaciones, esa vez con unas de la mejores que he visto sobre Biología Celular , donde se incluyen temas desde la Anatomía de la Célula, Estructura de los Cromosomas, ADN, Ciclo de Krebs, Fotosíntesis, etc. y mis favoritas las de Mitosis y Meiosis. Lo único malo es que cuentan con Copyright a nombre de John Kirk y que solo pueden mostrarse o reproducirse en su sitio Web; por eso solo muestro algunas imágenes; lo bueno es que son muy accesibles y vienen en 6 idiomas.
Evolution in Action: Lizard Moving From Eggs to Live Birth Evolution has been caught in the act, according to scientists who are decoding how a species of Australian lizard is abandoning egg-laying in favor of live birth. Along the warm coastal lowlands of New South Wales (map), the yellow-bellied three-toed skink lays eggs to reproduce. But individuals of the same species living in the state's higher, colder mountains are almost all giving birth to live young. Only two other modern reptiles—another skink species and a European lizard—use both types of reproduction. Evolutionary records shows that nearly a hundred reptile lineages have independently made the transition from egg-laying to live birth in the past, and today about 20 percent of all living snakes and lizards give birth to live young only. But modern reptiles that have live young provide only a single snapshot on a long evolutionary time line, said study co-author James Stewart, a biologist at East Tennessee State University. Eggs-to-Baby Switch Creates Nutrient Problem
Storia della Scienza per ragazzi La storia della scienza raccontata ai ragazzi Giovanni Di Gregorio Sciamani, filosofi e vecchie comari nella medicina classica Il mistico Keplero e le leggi dell’astronomia Bussola, portolani e polvere da sparo: l’esplorazione dei nuovi mondi Magia, alchimia e la trasformazione delle sostanze La sconfitta di Aristotele e la nascita della scienza moderna La riscoperta dell’anatomia tra autopsie e stampe illustrate La rivincita del microscopio e la scoperta di nuovi mondi Una mela, Saturno e leggi universali di Newton Linneo e il grande catalogo della Natura Ossa di drago e rocce dalla forma curiosa: la lenta nascita della geologia I fringuelli delle Galapagos e il mistero dell’origine della specie Louis Pasteur e l’evoluzione della ricerca medica Una piccola raccolta di immagini su ... Darwin, le Galapagos, i fringuelli, l'origine della specie ... e altre cose
Biology Biology 1A: General Biology (Spring 2010) Evolution Entrance These exhibits trace evolutionary thought as it has developed over time, pausing to ponder the contributions of scientists and thinkers including Aristotle, Darwin, Wallace, and many others. Explore the theory of evolution. Learn about the history of evolutionary thought. There are many other great places to look on-line for information about evolution. — Visit Understanding Evolution, a new site launched in February 2004 to meet the needs of K-12 teachers. — Browse the Talk Origins Archive, a rich source of information about evolution and the evolution/creation controversy. — Visit the National Center for Science Education website, a nationally-recognized clearinghouse for information and advice on teaching evolution in the classroom.
Erbe medicinali Serious Games Bring Immersive Astronomy To Science Classrooms | FUTURE-MAKING SERIOUS GAMES Serious Games for a high tech space-simulation experience Via: Edutopia - Virtual Universe: Students Use Technology to Reach for the Stars by Bilen Mesfin Full Article Remote telescopes, desktop planetariums, and 3-D space-simulation programs launch classrooms into space Frank Gregorio's astronomy course is the most popular science elective at Osburn Park High School, in Manassas, Virginia. Gregorio has created comprehensive activities that guide students through Celestia's three-dimensional simulated universe, letting them observe the life cycle of stars, hurtle into the future to see Mars terraformed and the Sun swell, and travel four billion years back in time to witness the formation of the moon -- all at their own pace. Celestia enables Gregorio to transform his class "from a room with a teacher, some videos, and a blackboard into a high tech space-simulation experience far more exciting than anything these kids have ever experienced in a school," he says. Have PC, Will Travel Star Tour
Evolutionary psychology Evolutionary psychology (EP) is an approach in the social and natural sciences that examines psychological traits such as memory, perception, and language from a modern evolutionary perspective. It seeks to identify which human psychological traits are evolved adaptations – that is, the functional products of natural selection or sexual selection. Adaptationist thinking about physiological mechanisms, such as the heart, lungs, and immune system, is common in evolutionary biology. Some evolutionary psychologists apply the same thinking to psychology, arguing that the mind has a modular structure similar to that of the body, with different modular adaptations serving different functions. Evolutionary psychologists argue that much of human behavior is the output of psychological adaptations that evolved to solve recurrent problems in human ancestral environments. The adaptationist approach is steadily increasing as an influence in the general field of psychology. Scope
Dipartimento di Botanica dell'Università di Catania Immersive Learning Simulations ForgeFX has been a proud content development partner for Pearson Education for over 10 years. Developing over 100 simulation-based training programs and applications, across a number of different subjects and curricula, ForgeFX helps Pearson Education deliver digital learning products that transform students from passive audience members, to active participants in the learning process. 3D Wave Simulator This real-time 3D wave simulator demonstrates the connection between wind speed and ocean particle motion depth. Water motion simulator helps students visualize how ocean waves work. Pheromone Communication Simulation This is 3D simulator demonstrates how ants use pheromones to communicate. Interactive 3D Communication Simulation. Interactive Eye Dissection Simulation The 3D eye dissection simulator allows students to perform virtual cow eye dissections. Examining the structures and functions of a virtual 3D cow eye. Seismic Waves Simulator Interactive 3D E-learning Simulation
Mathematical and theoretical biology Mathematical and theoretical biology is an interdisciplinary scientific research field with a range of applications in biology, biotechnology, and medicine. The field may be referred to as mathematical biology or biomathematics to stress the mathematical side, or as theoretical biology to stress the biological side. It includes at least four major subfields: biological mathematical modeling, relational biology/complex systems biology (CSB), bioinformatics and computational biomodeling/biocomputing. Mathematical biology aims at the mathematical representation, treatment and modeling of biological processes, using a variety of applied mathematical techniques and tools. It has both theoretical and practical applications in biological, biomedical and biotechnology research. For example, in cell biology, protein interactions are often represented as "cartoon" models, which, although easy to visualize, do not accurately describe the systems studied. Importance
Tavola periodica interattiva, descrizione aanche audio dei singoli elementi e video Lanthanum: the essentials Lanthanum is silvery white, malleable, ductile, and soft enough to be cut with a knife. It is one of the most reactive of the rare-earth metals. It oxidises rapidly when exposed to air. Cold water attacks lanthanum slowly, and hot water attacks it much more rapidly. Lanthanum: historical information Lanthanum was discovered by Carl Gustaf Mosander at 1839 in Sweden. Carl Gustav Mosander recognized the element lanthanum in impure cerium nitrate in 1839. Lanthanum: physical properties Melting point: 1193 [or 920 °C (1688 °F)] KBoiling point: 3743 [or 3470 °C (6278 °F)] KDensity of solid: 6146 kg m-3 Read more » » Lanthanum: orbital properties Read more » » Isolation Isolation: lanthanum metal is available commercially so it is not normally necessary to make it in the laboratory, which is just as well as it is difficult to separate it from as the pure metal. Pure lanthanum is available through the reduction of LaF3 with calcium metal. 2LaF3 + 3Ca → 2La + 3CaF2