Latest Organism Stories

2010-03-04 14:25:00

Naegleria genome sheds light on transition from prokaryotes to eukaryotes In the long evolutionary road from bacteria to humans, a major milestone occurred some 1.5 billion years ago when microbes started building closets for all their stuff, storing DNA inside a nucleus, for example, or cramming all the energy machinery inside mitochondria. Scientists have now sequenced the genome of a weird, single-celled organism called Naegleria gruberi that is telling biologists about that transition...

2010-02-05 14:54:10

Monash University biochemists have found a critical piece in the evolutionary puzzle that explains how life on Earth evolved millions of centuries ago. The team, from the School of Biomedical Sciences, has described the process by which bacteria developed into more complex cells and found this crucial step happened much earlier in the evolutionary timeline than previously thought. Team leader and ARC Federation Fellow Trevor Lithgow said the research explained how mitochondria -- the power...

2010-02-05 08:40:00

In the natural stream communities of Trinidad, guppy populations live close together, but evolve differently. Upstream, fewer predators mean more guppies but less food for each; they grow slowly and larger, reproduce later and less, and die older. Downstream, where predators thrive, guppies eat more, grow rapidly, stay small, reproduce quickly and die younger. While it is clear to ecologists that an ecosystem shapes the evolution of animals living in it, population biology experts such as...

2010-02-02 07:12:41

Research findings introduce fundamental shift in how biologists perceive relationship between evolution and ecology Biologists have known for long that ecology, the interaction between organisms and their environment, plays a significant role in forming new species and in modifying living ones. The traditional view is that ecology shapes evolution. The environment defines a template and the process of evolution by natural selection shapes organisms to fit that template. Some specialized...

2009-11-26 14:32:33

EMBL and CRG scientists reveal what a self-sufficient cell can't do without What are the bare essentials of life, the indispensable ingredients required to produce a cell that can survive on its own? Can we describe the molecular anatomy of a cell, and understand how an entire organism functions as a system? These are just some of the questions that scientists in a partnership between the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, and the Centre de Regulacio...

2009-11-11 13:07:18

Scientists in Washington, DC, are reporting development and successful tests of a new way for exploring the insides of living cells, the microscopic building blocks of all known plants and animals. They explode the cell while it is still living inside a plant or animal, vaporize its contents, and sniff. The study appears in online in ACS' journal Analytical Chemistry. Akos Vertes and Bindesh Shrestha note that knowing the contents of cells is the key to understanding how healthy cells differ...

2009-11-09 14:36:14

Rice evolutionary biologists argue for new meaning of 'organismality' Rice University evolutionary biologists David Queller and Joan Strassmann argue in a new paper that high cooperation and low conflict between components, from the genetic level on up, give a living thing its "organismality," whether that thing is an animal, a plant, a bacteria "“ or a colony. Some of the traits scientists use to describe an organism, such as individuality or even membership in the same species, may...

2009-09-30 08:05:00

Hikers know that moss on a tree trunk always points north. According to new research by Israeli and German scientists, this ancient plant may also provide a new "compass" for stem cell research, telling scientists how better to program stem cells for medical purposes. Dr. Nir Ohad of Tel Aviv University's Department of Plant Sciences and Prof. Ralf Reski of the University of Freiburg have discovered a new use for the Polycomb group proteins (PcG) found in moss. They reported their findings...

2009-09-26 09:41:27

Investigators at Burnham Institute for Medical Research (Burnham), University of California, San Diego, The Scripps Research Institute (TSRI), Genomics Institute of the Novartis Research Foundation (GNF) and other institutions have constructed a complete model, including three dimensional protein structures, of the central metabolic network of the bacterium Thermotoga maritima (T. maritima). This is the first time scientists have developed such a comprehensive model of a metabolic network...

2009-09-14 08:25:04

An international team of researchers, including Monash University biochemists, has discovered evidence at the molecular level in support of one of the key tenets of Darwin's theory of evolution. Monash University's Professor Trevor Lithgow said the breakthrough, funded by the Australian Research Council and published recently in the prestigious journal PNAS, provides a blueprint for a general understanding of the evolution of the "machinery" of our cells. "Our cells, and the cells of all...

Latest Organism Reference Libraries

2014-01-12 00:00:00

Biology is the study of living organisms. Before the 19th century, biology was known as natural history (the study of all living things). Gottfried Reinhold Treviranus was the first person to coin the term biology. Biology comes from the Greek words bios (meaning "life") and logia (meaning "study of"). It is a common science that is a standard subject in schools and universities around the world. Over a million papers are published annually in biology and medicinal journals. Not just a...

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Word of the Day
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.