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Carrier in Biological Definition

Carrier

... carrier has several different meanings: in telecommunication , a carrier wave in biology , an asymptomatic carrier the ...

Hepatitis B

... the infection. When the infection is not cleared, one becomes a chronic carrier of the virus. Treatment There are currently several treatments for ... a health care worker accidentally stuck by a needle used in a hepatitis B carrier would qualify. Treatment must be soon after exposure, however. ...

Oswald Avery

... R strain bacteria to transform then the substances removed couldn't be the carrier of genes. S strain bacteria first had the large cellular structures ... when injected with the bacteria. This indicated that DNA was the carrier of genes in cells. Avery wrote in a letter to his brother, "It's lots ...

Oxidative phosphorylation

... of the two mitochondrial membranes . NADH and FADH 2 , electron carrier molecules that were "loaded" during the citric acid cycle, are used in an ... , and the Krebs cycle ) account for 34 of the 38 total ATP energy carrier molecules. It is worth noting that these ATP values are maximums, in ...

Passive transport

... diffusion is movement of molecules across the cell membrane via special carrier proteins that are embedded within the cellular membrane. A lot of large ... fit through the membrane pores. Therefore, it will bind with its specific carrier proteins, and the complex will then be bonded to a receptor site and moved ...

Albinism

... Where an individual receives one albinism gene and one normal gene, that person will not show outward signs of the condition, but will become a carrier of the recessive gene . Where two carriers of the recessive gene have a child together, that child will have a one in four chance of receiving two ...

Antigen

... antibodies . Usually, an antigen is a protein or a polysaccharide , but it can be any type of molecule, even small molecules if coupled to a large carrier ( haptens ). There are several kinds of antigens: Immunogen - Any substance that provokes an immune response (provokes immunity) when ...

Chromatography

... thin layer chromatography or TLC the stationary phase consists of a thin layer of adsorbent like silica gel , alumina , or cellulose on a flat carrier like a glass plate, a thick aluminum foil, or a plastic sheet. The process is similar to paper chromatography with the advantage of faster runs, ...

Diffusion

... diffuses into the blood and carbon dioxide diffuses out. Facilitated diffusion The passive transport of ions or molecules by a specific carrier protein in a membrane. As in simple diffusion, net transport is down a concentration gradient, and no additional energy has to be supplied. Compare ...

DNA

... history of DNA research James Watson in the Cavendish Laboratory at the University of Cambridge The discovery that DNA was the carrier of genetic information was a process which required many earlier discoveries. The existence of DNA was discovered in the mid 19th century . However, ...

Ebola

... in Nzara involved a worker who had been exposed to the potential natural reservoir at the local cotton factory . A natural reservoir is a carrier of the virus that is immune to its effects. Although many of the creatures — ranging from spiders to insects to rats and bats — ...

Heterozygote

... no protein at all. If the proteins are enzymes, the less-functional enzyme molecules usually have no effect and the person is an asymptomatic carrier . If the proteins are structural, such as those that comprise skin or bone matrix, a mixture of normal or abnormal products usually produces abnormal ...
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