Quantcast

Latest Photosynthetic reaction centre Stories

2011-08-02 20:56:47

Researchers have developed a new method to probe the fundamental workings of photosynthesis. The new experimental technique could help scientists better understand the nitty-gritty details of nature's amazingly efficient sunlight-to-fuel conversion system. Plants and other photosynthetic organisms grow by harvesting the sun's energy and storing it in chemical bonds. Antenna proteins, which are made up of multiple light-absorbing pigments, capture sunlight over a large surface area and then...

2011-05-12 22:12:16

"I have a slide that has a photo of a cornfield and a big photovoltaic array," says Robert Blankenship, a scientist who studies photosynthesis at Washington University in St. Louis. "When I give talks I often ask the audience which one is more efficient. Invariably the audience votes overwhelmingly in favor of photosynthesis. " They are wrong. This question and its surprising answer (below) is the point of departure for a provocative article published in the May 13 issue of Science. The...

2010-07-22 01:52:23

Recently, academic debate has been swirling around the existence of unusual quantum mechanical effects in the most ubiquitous of phenomena, including photosynthesis, the process by which organisms convert light into chemical energy. In particular, physicists have suggested that entanglement (the quantum interconnection of two or more objects like photons, electrons, or atoms that are separated in physical space) could be occurring in the photosynthetic complexes of plants, particularly in the...

75150f559fac4fff865f577722accb711
2010-06-24 10:50:00

Energy from hydrogen "“ scientists from all over the world work on this solution to overcome the energy crisis. Amongst other things they try to use the sunlight as driving force for the splitting of water into hydrogen and oxygen. In trying to copy the photosynthesis in the laboratory a team of scientists of the Universities of Jena and Erlangen-Nrnberg and of the Institute of Photonic Technology (IPHT) in Jena (Germany) made a huge step forward. The physicists and chemists were able...

8a7b83f4b401c8653c1173ddf175627c1
2010-05-11 07:40:45

The future of clean green solar power may well hinge on scientists being able to unravel the mysteries of photosynthesis, the process by which green plants convert sunlight into electrochemical energy. To this end, researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC), Berkeley have recorded  the first observation and characterization of a critical physical phenomenon behind photosynthesis known...

1ee8510fc1449932a4ee80d32a27188c
2010-05-03 14:07:06

University of Miami researcher examines the light harvesting properties of purple bacteria in hopes of adapting their natural designs in 'green' technologies for humans Purple bacteria were among the first life forms on Earth. They are single celled microscopic organisms that play a vital role in sustaining the tree of life. This tiny organism lives in aquatic environments like the bottom of lakes and the colorful corals under the sea, using sunlight as their source of energy. Its natural...

b49e824bb2ee6908453163d862c62d7a
2010-03-04 10:37:20

TAU scientists create a solar energy device from a plant protein structure If harnessing the unlimited solar power of the sun were easy, we wouldn't still have the greenhouse gas problem that results from the use of fossil fuel. And while solar energy systems work moderately well in hot desert climates, they are still inefficient and contribute only a small percentage of the general energy demand. A new solution may be coming from an unexpected source "” a source that may be on your...

c81a6aaacbb20864c5bd75ab0d58c47d1
2010-02-20 14:56:03

An international team of scientists, including two from Arizona State University, have taken a significant step closer to unlocking the secrets of photosynthesis, and possibly to cleaner fuels. Plants and algae, as well as cyanobacteria, use photosynthesis to produce oxygen and "fuels," the latter being oxidizable substances like carbohydrates and hydrogen. There are two pigment-protein complexes that orchestrate the primary reactions of light in oxygenic photosynthesis: photosystem I (PSI)...

2010-01-27 10:49:10

As so-called primary producers, plants use solar energy to synthesize the foodstuffs that sustain other forms of life. This process of photosynthesis works in much the same way as the solar panels that supply energy for domestic heating. Like these, plant leaves must cope with variations in the level and quality of ambient light. LMU researcher Professor Dario Leister and his colleagues at LMU Munich have been studying how this is accomplished in the thale cress, Arabidopsis thaliana. "It...

b1abf164bcc537cdbbd45d01d61ee64b1
2009-05-12 07:59:09

Photosynthesis is a remarkable biological process that supports life on earth. Plants and photosynthetic microbes do so by harvesting light to produce their food, and in the process, also provide vital oxygen for animals and people. Now, a large, international collaboration between Arizona State University, the University of California San Diego and the University of British Columbia, has come up with a surprising twist to photosynthesis by swapping a key metal necessary for turning sunlight...


Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
Related