Ed for All 1100. Introductory BiologyThis course features lectures by Professor Graham Walker, a Howard Hughes Medical Institute (HHMI) professor and director of the HHMI Education group at MIT, and Professor Sallie W. Chisholm, Lee and Geraldine Martin Professor of Environmental Studies and co-director of the MIT Earth Systems Initiative. The course covers the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes, as well as, the structure and synthesis of proteins, how these molecules are integrated into cells, and how these cells are integrated into multicellular systems and organisms. 1110. 1120. 1200. 1650. 1850. 2110. (Prof. 2120.
Nuclear Fission Animated - Free Science Videos and Lectures Neutron slams into the nucleus of a heavy element which causes a nuclear fission creating two ligher elements (fission products) and more free neutrons. These free neutrons are absorbed by other heavy elements which creates a chain reaction. This science video contains: nucleus, nuclear fission, neutrons, fission products, chain reaction
Infectious diseases: pathogens There are a number of interactive features in this e-source: A glossary of terms: any word with a glossary entry is highlighted like this. Clicking on the <acronym title='Glossary Item'>highlighted</acronym> word will open a new window with a definition of the word.Quick questions: at the end of a page/section, there is a set of quick questions to test your understanding of the scientific ideas.Animations: most of the animations can be expanded to full screen size, ideal for showing on an interactive whiteboard. The animations will play all the way through or can be viewed one section at a time.Downloads: Teachers can download individual diagrams, animations and other content from the Resource Library area of the website. Terms and Conditions apply. If you are printing from an Internet Explorer (IE) browser, please go to 'print preview' and adjust the preferred print zoom level to 85% .
Cell Size and Scale Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny. Smaller cells are easily visible under a light microscope. To see anything smaller than 500 nm, you will need an electron microscope. Adenine The label on the nucleotide is not quite accurate. How can an X chromosome be nearly as big as the head of the sperm cell? No, this isn't a mistake. The X chromosome is shown here in a condensed state, as it would appear in a cell that's going through mitosis. A chromosome is made up of genetic material (one long piece of DNA) wrapped around structural support proteins (histones). Carbon The size of the carbon atom is based on its van der Waals radius.
Bioman Biology: The Fun Place to Learn Biology! SAT Practice - Prepare with Official SAT Test Prep Questions Close My Organizer's new look, new features We've upgraded our college planning tools and information with enhanced searches and calculators, along with new videos of college students telling their own stories and educators sharing advice. Because the site has changed so much, some saved information may no longer be available. We're sorry for any inconvenience, but hope you'll explore the great new features the site has to offer. Save Your College List Manage your college list in the "My Colleges" tab. Save Your College Search Sign in to save a set of search criteria based on your college preferences. Financial Aid Tools & Calculators Visit My Ways to Pay and use our tools and calculators to search for scholarships, find out what college costs, calculate how college loans add up over time and much more.
Man with 'Walking Corpse Syndrome' believes he is dead Photo: Getty A patient has written a disturbing account of life with a condition that makes him think he is dead - and how he spent his days in graveyards as it was "the closest I could get to death". The British man, identified only as Graham, woke up nine years ago utterly convinced that he was no longer alive, even though he was still breathing. Doctors diagnosed him with Cotard’s syndrome, which is also known as "walking corpse syndrome" because it makes people think they have turned into zombies. Graham did not believe them, however, and insisted that his brain was dead. Advertisement The unusual condition emerged after Graham, who suffered from severe depression, tried to commit suicide. Eight months later, he told doctors that his brain had died or was, at best, missing. He lost interest in smoking, stopped speaking and refused to eat as there was "no point because I was dead". At the time, Graham was being looked after by his family because his illness had got so bad. Telegraph, London
NABT Instructional Resources Instructional Materials and Resources AAI Middle & High School Teaching Materials Curriculum developed in the John H. Wallace Summer Research Fellowship Program. A Miniature Guide For Students and Faculty To Scientific Thinking This miniature guide consists of the essence of scientific thinking concepts and tools. It can be used as a supplement to any science textbook, for any science class. The essence of scientific thinking concepts and tools, it focuses on the intellectual skills inherent in the well cultivated scientific thinker. Access Excellence Access Excellence is a national educational program that provides high school biology teachers access to their colleagues, scientists, and critical sources of new scientific information via the Information Highway. APSnet Education Center A new and growing website that presents information on plant health and plant diseases. Biology Lessons for Prospective and Practicing Teachers This site contains biology lessons and teachers' guides.
NOVA Why Did NASA Kill Cassini? On September 15, 2017 NASA destroyed Cassini—on purpose. Why kill a multibillion-dollar spacecraft? Sep 20, 2017 Death Dive to Saturn Follow Cassini's final days as it skims the cloud tops before plunging into the planet. Commentary: Unsolicited and Unwelcome, Climate Denial Comes to Schools In mid-March of 2017, I saw the first indications of trouble. From Education Blog | Sep 19, 2017 Cassini's Search For Life Is there life beyond Earth? Sep 15, 2017 Amazing Discoveries from Cassini Relive Cassini's greatest hits from its 13 years studying Saturn. Saying Goodbye to Cassini Cassini, a brave explorer that was dispatched to study a distant ringed world, has died. What Saturn Can Tell Us About Earth—and Beyond After Friday’s crash landing into Saturn, NASA scientists are reflecting on the lessons Cassini has imparted.
Woman found functioning without a cerebellum in her brain Doctors have discovered that somehow, a woman living in China has reached the age of 24 while missing a large part of her brain. They say this is evidence of how incredibly adaptable our brains can be. Images: Left: Feng Yu et al. Right: decade3d/Shutterstock When a woman checked herself into the PLA General Hospital in China's Shandong Province, she reported symptoms of dizziness and nausea. She’d had a shaky walk for most of her life, and unlike most people, who learn to walk when they’re very young infants, she was only able to master this skill at seven years old. According to Helen Thomson at New Scientist, once the doctors performed a CAT scan - which combines information from several X-rays to produce a comprehensive image of structures inside the brain - the source problem was immediately made clear. The cerebellum makes up 10 percent of the brain’s total volume, but contains 50 percent of its neurons.
Wisc-Online.com Khan Academy 4 Medical Misunderstandings With Horrific Consequences #2. Cure for Deadly Skin Disease Is Found, No One Cares View Stock/View Stock/Getty Images In the early 20th century, a terrible disease tore through the southern parts of the United States like the disasters in an usually slow-acting Roland Emmerich movie. George Doyle/Stockbyte/Getty"I know, sweetie. Nearby spectators realized Goldberger was right, hoisted the man up on their shoulders, and paraded him around America. The Horrible Consequences Wait! Goldberger tried valiantly to prove his case. Via Wikipedia"Joseph Goldberger. It wasn't until 1937 that the exact bad guy behind pellagra was discovered: a deficiency of the nutrient niacin, also known as Vitamin B3. #1. Ana Blazic/iStock/Getty Images Some time ago, a bunch of researchers were studying the response of newborn babies to pain stimuli, probably because the researchers were never loved as children. Jochen Sand/Digital Vision/Getty Images"Meh, this guy's brain doesn't look too sharp either. Wait, what?