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Spectrum in Biological Definition

Absorption spectrum

... An absorption spectrum is a diagram depicting the wavelengths of ... can be regarded as the opposite to an emission spectrum , which is a depiction of the specific ... this results in dark absorption lines seen in the spectrum when viewed through a spectroscope . The ...

Optical spectrum

... The optical spectrum ( light or visible spectrum ) is the portion of the electromagnetic spectrum that is visible to the human eye . There ...

Biology

... and individuals come into existence, and the interactions they have with each other and with their environment . Biology encompasses a broad spectrum of academic fields that are often viewed as independent disciplines. Together, they study life over a wide range of scales . Life is studied at ...

Barbiturate

... Barbiturates are drugs that acts as central nervous system (CNS) depressants , and by virtue of this they produce a wide spectrum of effects, from mild sedation to anesthesia . Some also are used as anticonvulsants . Barbiturates are derivatives of barbituric acid. ...

Chlorophyll

... to convert carbon dioxide and water to carbohydrates and oxygen . Chlorophyll absorbs most in the red and blue portions of the electromagnetic spectrum , thus its intense green color. Chemical structure Chlorophyll is a chlorin pigment, which is structurally similar to porphyrin pigments ...

Photosynthesis

... In plants, there are two photosystems involved, which are most active at 700 and 680 nm . However, other wavelengths are also peaks in the action spectrum for photosynthesis. Photosynthesis begins when light ionizes a chlorophyll molecule, releasing two electrons , which are transferred along an ...

Immune system

... innate immune system. Innate immunity fights pathogens using defenses that are quickly mobilized and triggered by receptors that recognize a broad spectrum of pathogens. Plants and many lower animals do not possess an adaptive immune system and instead rely on innate immunity. The study of the innate ...

Magnetic resonance imaging

... relative to those of surrounding regions. MR spectroscopy, however, provides a wealth of chemical information about that region, as would an NMR spectrum of that region. Functional MRI Functional MRI (fMRI) measures signal changes in the brain that are due to changing neural activity. The ...

Photon

... be created and destroyed. Photons are commonly associated with visible light , which is actually only a very limited part of the electromagnetic spectrum . Photons have zero invariant mass but a definite finite energy. Because they have energy, the theory of general relativity states that they ...

Photosynthesis

... In plants, there are two photosystems involved, which are most active at 700 and 680 nm . However, other wavelengths are also peaks in the action spectrum for photosynthesis. Photosynthesis begins when light ionizes a chlorophyll molecule, releasing two electrons , which are transferred along an ...

Pigment

... There are both natural and synthetic pigments, both organic and inorganic ones. Pigments work by selectively absorbing some parts of the visible spectrum (see light ) whilst reflecting others. A distinction is usually made between a pigment, which is insoluble, and a dye , which is either a liquid, ...
Other Contents
(Date:4/23/2014)... study by a University of Exeter researcher has shed ... wild camels thriving in Australia,s remote outback have become ... , Sarah Crowley, of the Environment and Sustainability Institute ... history of the camel in Australia, from their historic ... their current status as unwelcome "invader." , The deserts ...
(Date:4/23/2014)... (April 23, 2014). "I think one can argue that if ... as doing everything else that we canthen we can solve ... one of the world,s foremost climate researchers, in the current ... by SAGE. Refusing to take significant action on climate change ... needed to address the problem, Wigley explains in an exclusive ...
(Date:4/22/2014)... April 22, 2014 Scientists from the Florida campus ... protein complex that plays a critical but previously unknown ... study, which showed a novel role for a protein ... the journal eLife , a publisher supported by ... and the Wellcome Trust. , "This is a critical ...
Breaking Biology News(10 mins):How Australia got the hump with 1 million feral camels 2How Australia got the hump with 1 million feral camels 3Is nuclear power the only way to avoid geoengineering? 2Scientists identify critical new protein complex involved in learning and memory 2
(Date:4/23/2014)... Ind. - Purdue University researchers have developed a way ... cell by using tiny gold particles with tails of ... of agricultural and biological engineering, used gold nanoparticles to ... as BRCA1 messenger RNA splice variants, which can indicate ... of these mRNA splice variants in a cell can ...
(Date:4/23/2014)... The internal surface area of the gastro-intestinal tract has ... square meters. Scientists at the Sahlgrenska Academy have used ... , "Actually, the inner surface of the gastro-intestinal tract ... says scientist Lars Fndriks. , The digestive tract, which ... through the intestines, has a length of about 5 ...
(Date:4/23/2014)... In science, "simple and accessible detection methods that ... the resolution of a single cell inside that ... chemical engineer Chang Lu. , In the Royal ... Lu has announced that he and his coworkers ... subcellular location of a protein ( Chem. Sci. ...
(Date:4/23/2014)... Fruits and vegetables are often displayed in the ... are also plenty of high-sugar foods. A new ... food is portrayed in children,s TV programmes as ... viewing, dietary habits and weight status. , Steingerdur ... food in the popular Swedish children,s TV show ...
(Date:4/23/2014)... from the Cancer Science Institute of Singapore (CSI Singapore) ... cancer specific stem cell which causes gastric cancer. This ... for the treatment of this disease and other types ... Chan Shing Leng, Research Assistant Professor at CSI Singapore, ... of a cell surface protein, CD44v8-10, marks gastric cancer ...
Breaking Medicine News(10 mins):Health News:Gold nanoparticles help target, quantify breast cancer segments in a living cell 2Health News:The surface area of the digestive tract 'only' as large as a studio apartment 2Health News:Following a protein's travel inside cells is key to improving patient monitoring, drug development 2Health News:High-calorie and low-nutrient foods in kids' TV 2Health News:Scientists identify cancer specific cell for potential treatment of gastric cancer 2Health News:Scientists identify cancer specific cell for potential treatment of gastric cancer 3
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