Molecules Videos

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DVD Available at: http://www.longtailnet.com/1362 In just over a century, plastics have pushed back the boundaries of human capabilities. This program investigates the remarkable world of plastics and takes an in-depth look at how these materials are created and what makes them so unique.Author: longtailnet Tags: Plastics plastics the military space exploration magic molecules huge polymers World Solar Challenge International Space Station emergency evacuation vehicle X38 nylon parafoil McMurdo Posted: 15 November 2009 Rating: 0.0 Votes: 0

DVD Available at: http://www.longtailnet.com/1366 Plastics are pushing back the boundaries to reveal amazing possibilities few could have imagined. This program investigates the remarkable world of plastics and takes an in-depth look at how these materials are created and what makes them so unique.Author: longtailnet Tags: Plastics plastics military magic molecules huge polymers World Solar Challenge self-healing petrochemical industry corn cobs plastic graft biotissue replacement organs Posted: 15 November 2009 Rating: 0.0 Votes: 0

NASA scientists have discovered water molecules in the polar regions of the moon in amounts that are greater than predicted, but still relatively small. Also found in the lunar soil was hydroxyl, a molecule consisting of one oxygen and one hydrogen atom. Interview: Robert Green,Moon Mineralogy Mapper Scientist,Jet Propulsion Laboratory video library #AVC 2009-169

An amazing device that can shrink molecules - any item placed into it

An introduction interview between Jason Long and Erik Johnston. Erik answers questions related to modern alchemy and his contributions to the science. Erik introduces his company zptech.net and how the company has evolved.

Shows both the reactions and properties of some chemical elements. Taken from the free online course The molecular world. For more, visit The Open University's OpenLearn website. http://openlearn.open.ac.uk/S205_2 http://www.open.ac.uk/use -

This male lion has found something really appealing. Manyari was here. He's displaying an action called flehmen which is the pulling back of his lips and sucking air over an organ at the top of his mouth. This organ traps odour molecules sending signals to the brain about scent. Having satisfied himself with that scent he's then after the real thing, but Manyari will have none of it.

Production, refining and distribution of gasoline.

An amazing device that can shrink molecules - any item placed into it

Chlorophyll is a green photosynthetic pigment found in most plants, algae, and cyanobacteria. Its name is derived from ancient Greek: chloros = green and phyllon = leaf. Chlorophyll absorbs most strongly in the blue and red but poorly in the green portions of the electromagnetic spectrum, hence the green color of chlorophyll-containing tissues like plant leaves. Chlorophyll is vital for photosynthesis, which helps plants get energy from light

DNA is also one of the most familiar molecules, the central icon of molecular biology, easily recognized by everyone. To some, it may carry a negative connotation, being a pervasive symbol for activists against genetically engineered produce. To others, it may bring to mind advances in forensics such as the DNA fingerprinting used in many recent high-profile trials. Some may have seen it in science fiction, modified to build dinosaurs or store cryptic messages from aliens. To all it is a pervasive symbol of our growing understanding of the human body and our close kinship with the rest of the biosphere, and the moral and ethical issues that must be addressed in the face of that knowledge. DNA is perfect for the storage and readout of information. It is laden with information. Every surface and edge of the molecule carries information. The basic mechanism by which DNA stores and transmits genetic information was discovered in the 1950's by Watson and Crick. This basic information is stored in the way that the bases match one another on opposite sides of the double helix--adenine with thymine, guanine with cytosine--forming a set of complementary hydrogen bonds

Cholera Toxin in Action The catalytic portion of cholera toxin performs a single function: it seeks out the G proteins used for cellular signaling and attaches an ADP molecule to them (for more on G-proteins, see the Molecule of the Month for March 2004 ). This converts the G-protein into a permanently active state, so it sends a never-ending signal. This confuses the cell, and among other things, it begins to transport lots of water and sodium outwards. This floods the intestine, leading to life-threatening dehydration. The two-part strategy employed by cholera toxin is highly effective, so much so that it is used by many different organisms that seek to protect themselves. A few examples from the PDB are shown here, with the targeting portion in blue and the toxic enzyme in red. These include E. coli enterotoxin (PDB entry 1ltb), which looks and acts like cholera toxin and is a cause of intestinal problems when traveling. Pertussis toxin (PDB entry 1prt), made by the bacterium that causes whooping cough, also attacks the G-protein signaling pathway. Diphtheria toxin (PDB entry 1mdt) is synthesized as a single chain, but is then cut to form the two-part toxin when it is released. It shuts down protein synthesis in cells by attacking one of the elongation factors. Ricin (PDB entry 2aai) is a powerful toxin made by the castor bean plant. Once it gets inside cells, it blocks protein synthesis by directly attacking ribosomes. For more information on toxins from a genomics perspective, take a look at the Protein of the Month at the European Bioinformatics Institute.

A profile of Herbert Hauptman, one of two American scientists awarded the 1985 Nobel Prize in Chemistry for their discovery of molecular magnification.