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Chapter 18
T he word metabolism derives from the Greek word for “change.” Metabolism represents the sum of the chemical changes that convert nutrients, the “raw materials” necessary to nourish living organisms, into energy and the chemically complex finished products of cells. Metabolism consists of literally hundreds of enzymatic reactions organized into discrete pathways.
Video: Clearing the Smoke: The Science of Cannabis | Watch MontanaPBS Presents Online | MontanaPBS Video
MontanaPBS's new documentary, Clearing the Smoke, reveals how cannabis acts on the brain and in the body to treat nausea, pain, epilepsy and potentially even cancer. Extensive interviews with patients, doctors, researchers and skeptics detail the promises and the limitations of medicinal cannabis.
is the most comprehensive scientific research tool on the web. With over 440 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information.
Scirus - for scientific information
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BBC News - Are we losing the fight against superbugs?
Human/Swine A/H1N1 Influenza Origins and Evolution
These pages exist to enable the rapid dissemination of results resulting from the analysis of genetic data from the ongoing Influenza A/H1N1 outbreak attributed to swine flu. All data used, unless otherwise specified, was made available by GISAID or NCBI and can be obtained directly from these sites. All analysis should be considered preliminary and results are conditional on the correct labelling and annotation of genetic sequences. Additionally, results may be influenced by limited and biased sampling of isolates.
Bio303 Lecture Three: New Foes, Emerging Infections
New foes. In this lecture I will describe emerging infections, their epidemiology and ecology and the threats that they pose. I will focus on three case studies: SARS, pandemic flu (with help from Jenn New foes. In this lecture I will describe emerging infections, their epidemiology and ecology and the threats that they pose.Brain parasite directly alters brain chemistry
Public release date: 4-Nov-2011 [ Print | E-mail | Share ] [ Close Window ]
Rapid evolution of RNA viruses is intimately linked to their success in overcoming the defenses of their hosts. Several studies have shown that rates of viral evolution can vary dramatically among distantly related viral families. Variability in the speed of evolution among closely related viruses has received less attention, but could be an important determinant of the geographic or host species origins of viral emergence if certain species or regions promote especially rapid evolution. A new paper uses a dataset of rabies virus sequences collected from bat species throughout the Americas to test the role of inter-specific differences in reservoir host biology on the tempo of viral evolution. This shows the annual rate of molecular evolution to be a malleable trait of viruses that is accelerated in subtropical and tropical bats compared to temperate species.
MicrobiologyBytes
Nature Publishing Group : science journals, jobs, and information
Nature Outlook : Lenses on Biology In this special edition of Nature Outlook , five top scientists explain how research in their specialties — cancer, climate change, stem cells, oceanography and synthetic biology — has changed our lives.
At its simplest, biotechnology is technology based on biology - biotechnology harnesses cellular and biomolecular processes to develop technologies and products that help improve our lives and the health of our planet. We have used the biological processes of microorganisms for more than 6,000 years to make useful food products, such as bread and cheese, and to preserve dairy products.
BIO | Healing, Fueling and Feeding the World
About the series Origins of Us tells the story of our species, homo sapiens. In every one of our bodies is the evidence of how we evolved away from our ape cousins to become the adaptable, successful species we are today.
BBC Two - Origins of Us
Feature Articles | Health See Inside A new pattern of antibiotic resistance that is spreading around the globe may soon leave us defenselessagainst a frighteningly wide range of dangerous bacterial infections Image: Photograph by Darren Braun