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Aid in Biological Definition

Digestion

... enzymes such as salivary amylase , which aid in the breakdown of food, particularly ... mixed with secretions such as bile , which helps aid in fat digestion, and insulin , to process ... organs Organisms develop specialized organs to aid in the digestion of their food, for example ...

Affinity chromatography

... affinity chromatography is for the purification of recombinant proteins. Essentially proteins are tagged with a known affinity ligand in order to aid their purification. That is to say that the molecule has an artificial trait imposed upon it by genetic modification which allows it to be selected ...

Charles Darwin

... kind" and would be "highly injurious to the race of man." However, he also felt that the sympathetic instincts of humans, which would allow them to aid the helpless, had developed due to natural selection, and to deny them would damage the "noblest part of our nature" for only a potential future ...

Cladistics

... useful and coherent and has gained general support. As DNA sequencing has become easier, phylogenies are increasingly often constructed with the aid of molecular data. Computational systematics allows the use of these large data sets to construct objective phylogenies. These can more ...

Electrophysiology

... inserted to establish an electrochemical junction with the pipet fluid and the tissue or cell into which the pipet is inserted (typically with the aid of a microscope and finely adjustable pipet holders, known as micromanipulators). The chloride-coated silver wire connects back to the amplifier. ...

Equilibrium

... in which the sum of all forces and torques acting on the body equals zero. Physical balance of humans and animals is maintained with the aid of the sense of balance , and in special cases with a balance beam . See also the weighing instrument balance . Thermodynamic ...

Excretion

... be in a situation of insufficient water and in danger of overheating due to lack of persperation, urine may be safely used to dampen clothing to aid cooling. It is futile to attempt to drink it (or salty ocean water), as it requires more water from the body to excrete the salt than is available in ...

Flagellum

... 200 to 1000 rpm. The components of the flagellum are capable of self-assembly in which the component proteins associate spontaneously without the aid of enzymes or other factors. Both the basal body and the filament have a hollow core, through which the component proteins of the flagellum are able ...

Microsatellite

... cause a high frequency of loss or insertion of additional repeats by confusing the DNA replication machinery. Self-complementary sequences may aid this process. In tumour cells, where controls on replication may be damaged, microsatellites may be gained or lost at an especially high frequency ...

Plant physiology

... by plant physiologists. It is closely related to biochemistry and molecular biology . External links Plant physiology online study aid Plant physiology scientific journal Bibliography Frank B. Salisbury, Cleon W. Ross Plant physiology Wadsworth, 1992. - ISBN ...

Stem cell

... in November 2004 that they had successfully used multipotent cord blood (adult) stem cell treatments to enable a paralyzed woman to walk with the aid of a walker. This was achieved by isolating the stem cells from the umbilical cord blood and injecting the cells into the damaged part of the woman's ...

Virus

... Jared Diamond argued in his book Guns, Germs, and Steel that highly contagious diseases develop in agricultural societies and regularly aid those societies when they expand into the territories of non-agricultural peoples. Of all types of virus, the most deadly are known as filovirus . ...
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