News tagged with cells
Graetzel cells are implanted in an iPad keyboard
Dye-sensitized solar cells (DSSC) from EPFL enter the public market. Logitech chose this technology to power its new flagship product.
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Blowing in the wind: How hidden flower features are crucial for bees
As gardeners get busy filling tubs and borders with colourful bedding plants, scientists at the Universities of Cambridge and Bristol have discovered more about what makes flowers attractive to bees rather than humans. Published ...
May 28, 2012 |
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Physicists devise method for building artificial tissue
New York University physicists have developed a method that models biological cell-to-cell adhesion that could also have industrial applications.
May 28, 2012 |
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Sun-powered plane trip delayed by wind
The Swiss sun-powered aircraft Solar Impulse has been delayed by strong winds during a stop-off on its first planned intercontinental flight, organisers said on Monday.
Technology / Energy & Green Tech
May 28, 2012 |
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New study finds titan cells protect Cryptococcus
Giant cells called "titan cells" protect the fungus Cryptococcus neoformans during infection, according to two University of Minnesota researchers. Kirsten Nielsen, Ph.D., an assistant professor in the department of microb ...
May 28, 2012 |
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'Unzipped' carbon nanotubes could help energize fuel cells, batteries
Multi-walled carbon nanotubes riddled with defects and impurities on the outside could replace some of the expensive platinum catalysts used in fuel cells and metal-air batteries, according to scientists at ...
Nanotechnology / Nanomaterials
May 27, 2012 |
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Math predicts size of clot-forming cells
UC Davis mathematicians have helped biologists figure out why platelets, the cells that form blood clots, are the size and shape that they are. Because platelets are important both for healing wounds and in strokes and other ...
May 25, 2012 |
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Copy of the genetic makeup travels in a protein suitcase
Scientists from the Institute for Physical and Theoretical Chemistry at the University of Bonn have succeeded for the first time in the real time filming of the transport of an important information carrier in biological ...
May 25, 2012 |
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Building a better solar panel -- one molecule at a time
(Phys.org) -- One of the fundamental building blocks in modern chemistry, an organometallic chemical compound called ferrocene, has never been structurally defined - until now.
May 25, 2012 |
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Solar plane ends first leg of intercontinental bid
The Swiss sun-powered aircraft Solar Impulse landed safely in Madrid early Friday at the end of the first leg of its attempt at an intercontinental flight without using a drop of fuel.
Technology / Energy & Green Tech
May 25, 2012 |
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'Metamaterials,' quantum dots show promise for new technologies
(Phys.org) -- Researchers are edging toward the creation of new optical technologies using "nanostructured metamaterials" capable of ultra-efficient transmission of light, with potential applications including ...
May 24, 2012 |
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Solar Impulse takes off on first intercontinental flight
The Swiss sun-powered aircraft Solar Impulse on Thursday took off for Morocco on its first intercontinental flight attempt without using a drop of fuel.
Technology / Energy & Green Tech
May 24, 2012 |
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Newly modified nanoparticle opens window on future gene editing technologies
The scientific and technological literature is abuzz with nanotechnology and its manufacturing and medical applications. But it is in an area with a less glitzy auraplant scienceswhere nanotechnology ...
Nanotechnology / Bio & Medicine
May 24, 2012 |
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Real-time monitoring of RNA splicing in living cells moves step closer with novel fluorescent probe
Numerous biological processes depend on molecules called lariat RNAs (LaRNAs). These lasso-shaped structures form in the cell during RNA splicing. During this process, transcribed RNA strands convert to messenger ...
May 24, 2012 |
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Researchers find a way to delay aging of stem cells
Stem cells are essential building blocks for all organisms, from plants to humans. They can divide and renew themselves throughout life, differentiating into the specialized tissues needed during development, ...
May 24, 2012 |
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Cell (biology)
The cell is the structural and functional unit of all known living organisms. It is the smallest unit of an organism that is classified as living, and is often called the building block of life. Some organisms, such as most bacteria, are unicellular (consist of a single cell). Other organisms, such as humans, are multicellular. (Humans have an estimated 100 trillion or 1014 cells; a typical cell size is 10 µm; a typical cell mass is 1 nanogram.) The largest known cell is an unfertilized ostrich egg cell.
In 1835 before the final cell theory was developed, a Czech Jan Evangelista Purkyně observed small "granules" while looking at the plant tissue through a microscope. The cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells. All cells come from preexisting cells. Vital functions of an organism occur within cells, and all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.
The word cell comes from the Latin cellula, meaning, a small room. The descriptive name for the smallest living biological structure was chosen by Robert Hooke in a book he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms monks lived in.
For more information about Cell (biology), read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.