Ocean Life Under Threat From Climate Change
18:47 06-06-2008; source: www.sciencedaily.com
The international science community must devote more resources to research into the effects climate change is having on ocean environments, according to a paper recently published in the journal Science.
Fish 380 Million Years Old Found With Unborn Embryo
18:47 06-06-2008; source: www.sciencedaily.com
Australian researchers have discovered a remarkable 380-million-year-old fossil placoderm fish with intact embryo and mineralized umbilical cord. The discovery makes the fossil the world's oldest known vertebrate mother. It also provides the earliest evidence of vertebrate sexual reproduction, wherein the males (which possessed clasping organs similar to modern sharks and rays) internally fertilized females.
How To Construct A 'Firefly' Worm: Measuring Metabolism Of Entire Organism In Real Time
18:47 06-06-2008; source: www.sciencedaily.com
For the first time, research describing a new modified luminescent worm allows scientists to measure -- in real time -- the metabolism of an entire living organism. The key behind this capacity relies in the fact that the luminescence is produced using the animal's available energy, which reflects its metabolism that, as such, can be extrapolated from measuring the emitted light.
Protein Found To Promote Antibiotic Resistance In A Common Food-borne Pathogen
03:47 06-06-2008; source: www.sciencedaily.com
Researchers have identified a novel factor that promotes the development of antibiotic resistance in a bacterial pathogen. The study explains that Mfd, a protein involved in DNA transcription and repair, plays an important role in the development of fluoroquinolone resistance in Campylobacter, a bacterial pathogen commonly associated with food poisoning in humans.
Molecular 'Ratcheting' Of Single Ribosome Molecules Observed In Act Of Building Proteins
03:47 06-06-2008; source: www.sciencedaily.com
Researchers have reported that they are the first to observe the dynamic, ratchet-like movements of single ribosomal molecules in the act of building proteins from genetic blueprints. The study reveals a key mechanism in the interplay of molecules that allows cells to build the proteins needed to sustain life.
New Way To Think About Earth's First Cells
03:47 06-06-2008; source: www.sciencedaily.com
A team of researchers have modeled in the laboratory a primitive cell, or protocell, that is capable of building, copying and containing DNA. Since there are no physical records of what the first primitive cells on Earth looked like, or how they grew and divided, the research team's protocell project offers a useful way to learn about how Earth's earliest cells may have interacted with their environment approximately 3.5 billion years ago.
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