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mass in Biological Definition

Antibody

... j oin), which is a polypeptide of molecular mass 1,5 kD, rich with cysteine and structurally ... has also a polypeptide of the same molecular mass (1,5 kD) that is called the secretory chain and ... a pentamer or a hexamer. It has a large molecular mass of approximately 900 kD. The J chain is attached ...

Bioinformatics

... with data from mRNA microarrays or mass spectrometry . Making sense of the ... protein concentrations with high-throughput mass spectroscopy . All of these techniques are ... Protein microarrays and high throughput (HT) mass spectrometry (MS) can provide a snapshot of the ...

Bioinformatics

... with data from mRNA microarrays or mass spectrometry . Making sense of the ... protein concentrations with high-throughput mass spectroscopy . All of these techniques are ... Protein microarrays and high throughput (HT) mass spectrometry (MS) can provide a snapshot of the ...

Extinction

... 2.4 Coextinction 3 Effects 4 mass extinctions 5 Human extinction 6 Human ... Main article: Coextinction Effects mass extinctions Main article: mass extinction There have been at least five ...

Photosynthesis

... the mid-1600s when he, by carfully measuring the mass of the soil in the pot of a plant and the mass of the plant as it grew, discovered that, with the soil mass changed very little, ...

Kinetic energy

... translational kinetic energy of a body with mass m , whose centre of mass is moving in a straight line with linear ... is the translational kinetic energy m is mass of the body v is linear velocity of the ...

Photosynthesis

... the mid-1600s when he, by carfully measuring the mass of the soil in the pot of a plant and the mass of the plant as it grew, discovered that, with the soil mass changed very little, ...

Potential energy

... releasing energy in some form. For example a mass released above the Earth has energy resulting ... energy 1.3 Chemical energy 1.4 Rest mass energy 1.5 Electrical potential energy ... . It is written as where m is the mass of the object, g the acceleration due to ...

Proteome

... that have migrated to specific locations. The mass spectrometer has augmented proteomics. mass mapping identifies a protein by cleaving it into ... masses against a sequence database . Tandem mass spectrometry, on the other hand, can get sequence ...

Proteomics

... proteomic techniques are based on mass spectrometry , commonly peptide mass fingerprinting on simpler instruments, or de ... on instruments capable of more than one round of mass spectrometry. Antibody-based assays can also be ...

Stem cell

... cells are cultured cells obtained from the inner mass cells of a blastocyst . Embryonic stem cell ... cells Stem cells which derived from the inner mass cells of a blastocyst (an early embryo ) have ... the injected substance was able to reduce tumor mass by 80 percent. Spinal cord Embryonic ...

Biodiversity

... been increasingly observed. The majority of biologists believe that a mass extinction is under way. While estimates over extinction rates range ... some argue that there are not enough data to support the view of mass extinction, and say abusive extrapolations are being made on the global ...

Brain

... scalp, electroencephalography (EEG) measures brainwaves, which are the mass changes in electrical current from the cerebral cortex, but can only ... In cephalopods, the brain is divided into two regions: the supraesophageal mass and the subesophageal mass. These parts are divided by the animal's ...

Diffusion

... particles diffuse in a liquid medium. Since the energy is thermal, the mass of the particles must be very small in order that the motion be observable ... topics List of biology topics List of physics topics mass transfer Materials science Mechanical ventilation ...

Gel electrophoresis

... technique to partially purify molecules to use other methods such as mass spectrometry , PCR , cloning , DNA sequencing , or immuno-blotting for ... an overall negative charge, and all the proteins have a similar charge to mass ratio. Since denatured proteins act like they were long rods instead of ...

Gel electrophoresis

... technique to partially purify molecules to use other methods such as mass spectrometry , PCR , cloning , DNA sequencing , or immuno-blotting for ... an overall negative charge, and all the proteins have a similar charge to mass ratio. Since denatured proteins act like they were long rods instead of ...

Nucleon

... of an atom 's nucleus . The total number of nucleons in an atom is the mass number on the atom, as nucleons each have a mass very close to one amu . See also List of particles ...

Photon

... part of the electromagnetic spectrum . Photons have zero invariant mass but a definite finite energy. Because they have energy, the theory of ... with the matter excitation to form a polariton, acquires an effective mass , which means that it cannot travel at c , the speed of light in a ...

Adenosine triphosphate

... groups. It has the empirical formula C 10 H 16 N 5 O 13 P 3 , and the chemical formula C 10 H 8 N 4 O 2 NH 2 (OH) 2 (PO 3 H) 3 H, with a molecular mass of 507.184 u . The phosphoryl groups starting with that on AMP are referred to as the alpha, beta, and gamma phosphates. The biochemical name ...

Alexander Fleming

... its effect may only hold valid with small infections and further by not being well received within the community, the drug was not developed for mass distribution until World War II when Howard Florey and Ernst Boris Chain developed a method of purifying penicillin to a form that was useful ...

Apoptosis

... billion cells die each day due to apoptosis in the average human adult. In a year, this amounts to the proliferation and subsequent destruction of a mass of cells equal to an individual's body weight. Homeostasis is achieved when the rate of mitosis (cell proliferation) in the tissue is balanced by ...

Autotroph

... An autotroph (in Greek eauton = self and trophe = nutrition) is an organism that produces its own cell mass and organic compounds from carbon dioxide as sole carbon source, using either light or chemical compounds as a source of energy . Plants and ...

Biopolymer

... be determined by Edman degradation , in which the N-terminal residues are hydrolyzed from the chain one at a time, derivatized, and then identified. mass spectrometer techniques can also be used. Nucleic acid sequence can be determined using gel electrophoresis and capillary electrophoresis. ...

Blood

... . Hormones also travel in the blood. There are about 4-6 liters of blood in an average human body, accounting for approximately 8% of body mass . Adult humans have about 60 milliliters of blood per kilogram of body weight. Human blood is red , ranging from bright red when oxygenated ...

Cartilage

... from the perichondrium and occur on the surface of the cartilage model. Interstitial Interstitial growth results in an increase of cartilage mass and occurs from within. Chondrocytes undergo mitosis within their lacuna but remain imprisoned in the matrix, which results in clusters of cells ...

Charles Darwin

... for an overview. Darwin was now settled with a private income, an eminent geologist in the scientific lite of clerical naturalists with a mass of work in hand, writing up his findings and theories (see Published Works below) and superintending the multi-volume "Zoology" describing his ...

Culture

... more civilized than others, and some people are more cultured than others. Thus some cultural theorists have actually tried to eliminate popular or mass culture from the definition of culture. Theorists like Matthew Arnold (1822-1888) or the Leavis's believe that culture is simply that which is ...

Down syndrome

... in the USA, mainly involving various combinations of vitamins and minerals, none of these have been medically approved for use in the UK for the mass treatment of people with Down syndrome and none appear to lead to any proven lasting benefits, and all remain highly controversial. Down ...

Eugenics

... 1910 heralded the Eugenics Record Office , Davenport and Harry H. Laughlin began to promote eugenics. In years to come the ERO collected a mass of family pedigrees, which concluded that those that were unfit were from economically and socially poor backgrounds. Eugenicists such as Davenport, ...

HeLa

... original cells having been overwhelmed by a rapidly growing population derived from HeLa contaminant cells. It has been estimated that the total mass of HeLa cells far exceeds that of the rest of Henrietta Lacks' body. Some researchers have argued that these cells are a separate species , ...

Homeostasis

... action potential . (See also leverage points .) Ecological homeostasis In the Gaia hypothesis , James Lovelock stated that the entire mass of living matter on Earth (or any planet with life) functions as a vast organism that actively modifies its planet to produce the environment that ...

Human

... nationalism or patriotism . In extreme cases, feelings of loyalty towards an institution or authority can become pathological , leading to mass hysteria or fascism . (See also Milgram experiment , Stanford prison experiment .) Consciousness Main articles: Consciousness , Human ...

Insulin

... islets) form the endocrine part of the pancreas , which is primarily an exocrine gland . The endocrine part accounts for only 2% of the total mass of the pancreas. Within the islets of Langerhans, beta cells constitute 60–80% of all the cells. Insulin is built from 51 amino acids and is ...

Life

... exhibits all the following phenomena at least once during its existence : Growth Metabolism , consuming, transforming and storing energy / mass ; growing by absorbing and reorganizing mass; excreting waste Motion, either moving itself, or having internal motion Reproduction , the ability ...

Microsatellite

... This article is about the DNA sequence. See miniaturized satellites for orbiting artificial satellites with a mass of less than 100Kg. A microsatellite is a short, noncoding DNA sequence (a Tandemly Repetitive DNA sequence) that is repeated many times ...

Nutrition

... Coeliac disease and schizophrenia British Medical Journal, February 21, 2004. Janssen I, Katzmarzyk PT, Ross R. Waist circumference and not body mass index explains obesity-related health risk. Am J Clin Nutr. 2004 Mar;79(3):379-84. J Mei, SSC Yeung et al "High dietary phytoestrogen intake and ...

Protein

... to symptoms such as fatigue, insulin resistance, hair loss, loss of hair pigment (hair that should be black becomes reddish), loss of muscle mass (proteins repair muscle tissue), low body temperature, and hormonal irregularities. Severe protein deficiency is fatal. Excess protein can cause ...

Purine

... Purine Chemical name Purine Chemical formula C 5 H 4 N 4 Molecular mass 120.11 g/mol Melting point 214 C CAS number 120-73-0 SMILES C1(NC=N2)=C2C=NC=N1 Purine is a heterocyclic ...

Pyrimidine

... Pyrimidine Chemical name Pyrimidine Chemical formula C 4 H 4 N 2 Molecular mass 80.09 g/mol Density 1.016 g/ml Melting point 20 - 22 C Boiling point 123 - 124 C CAS number 289-95-2 SMILES ...

Sequencing

... Pyrosequencing nanopore sequencing GeneEngine Methods for performing protein sequencing include: Edman degradation mass spectrometry protease digests Though polysaccharides are also biopolymers, it is not so common to talk of 'sequencing' a polysaccharide, ...
Other Contents
(Date:4/23/2014)... contribute to early fetal death according to a new ... Children,s Hospital Los Angeles and Ulaanbaatar, Mongolia the ... paper published today in the journal BMC Pregnancy ... between seasonal ambient air pollutants and pregnancy loss in ... the highest levels of air pollution of all world ...
(Date:4/23/2014)... Like a hungry diner ripping open a dinner roll, ... must tear open a hydrogen molecule. Now researchers have ... the two halves of its hydrogen feast. The view ... make the catalyst work better for alternative energy uses. ... shown precisely where the hydrogen halves end up in ...
(Date:4/23/2014)... research shows that male black widow spiders prefer their ... example of mate preference by male spiders. ... and Maydianne Andrade, a professor in UTSC,s Department of ... the wild that males overwhelmingly chose to mate with ... can tell whether a potential mate is well-fed and ...
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(Date:4/24/2014)... awarded one of 30 grants from the National Cancer ... Site in its new National Clinical Trials Network ... of investigators charged with distributing resources in a more ... system reflects recommendations from a 2010 Institute of ... goals:, Faster design, launch, and completion of ...
(Date:4/23/2014)... by Massachusetts General Hospital (MGH) investigators may lead to ... a serious medical problem use of fecal material ... the Clostridium difficile ( C. difficile ) ... the journal Clinical Infectious Diseases , the researchers ... donors unrelated to patients was as successful in curing ...
(Date:4/23/2014)... J. O,Shea, M.D., scientific director at the National Institute ... been named the 2014 recipient of the Ross Prize ... open-access journal Molecular Medicine . The award will ... Academy of Sciences in Manhattan, followed by scientific presentations ... part of the National Institutes of Health. , The ...
(Date:4/23/2014)... researchers have identified an important enzyme pathway that helps ... few chromosomes, a condition that has been directly linked ... professor of biochemistry, found that near the end of ... that ensures any breaks in DNA are fully repaired ... to daughter cells. This process helps safeguard against some ...
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