DNA

Deoxyribonucleic acid (ⁱ/diË?É’ksiËŒraɪboÊŠnjÊŠËŒkliË?ɪk, -ËŒkleɪɪk/;DNA) is a molecule that carries most of the genetic instructions used in the development, functioning and reproduction of all known living organisms and many viruses. DNA is a nucleic acid; alongside proteins and carbohydrates, nucleic acids compose the three major macromolecules essential for all known forms of life. Most DNA molecules consist of two biopolymer strands coiled around each other to form a double helix. The two DNA strands are known as polynucleotides since they are composed of simpler units called nucleotides. Each nucleotide is composed of a nitrogen-containing nucleobase—either cytosine (C), guanine (G), adenine (A), or thymine (T)—as well as a monosaccharide sugar called deoxyribose and a phosphate group. The nucleotides are joined to one another in a chain by covalent bonds between the sugar of one nucleotide and the phosphate of the next, resulting in an alternating sugar-phosphate backbone. According to base pairing rules (A with T, and C with G), hydrogen bonds bind the nitrogenous bases of the two separate polynucleotide strands to make double-stranded DNA. The total amount of related DNA base pairs on Earth is estimated at 5.0 x 10³⁷, and weighs 50 billion tonnes. In comparison, the total mass of the biosphere has been estimated to be as much as 4 TtC (trillion tons of carbon).

Facebook features

Facebook is a social network service website launched on February 4, 2004. This is a list of software and technology features that can be found on the Facebook website.

Facebook structure

News Feed

On September 6, 2006, Ruchi Sanghvi announced a new home page feature called News Feed. Originally, when users logged into Facebook, they were presented with a customizable version of their own profile. The new layout, by contrast, created an alternative home page in which users saw a constantly updated list of their friends' Facebook activity. News Feed highlights information that includes profile changes, upcoming events, and birthdays, among other updates. This has enabled spammers and other users to manipulate these features by creating illegitimate events or posting fake birthdays to attract attention to their profile or cause. News Feed also shows conversations taking place between the walls of a user's friends. An integral part of the News Feed interface is the Mini Feed, a news stream on the user's profile page that shows updates about that user. Unlike in the News Feed, the user can delete events from the Mini Feed after they appear so that they are no longer visible to profile visitors. In 2011 Facebook updated the News Feed to show top stories and most recent stories in one feed, and the option to highlight stories to make them top stories, as well as to un-highlight stories. In response to users' criticism, Facebook later updated the News Feed to allow users to view recent stories first.

With Love

With Love may refer to:

Albums

Songs

Other uses

See also

LIGHT (protein)

LIGHT, also known as tumor necrosis factor superfamily member 14 (TNFSF14), is a secreted protein of the TNF superfamily. It is recognized by herpesvirus entry mediator (HVEM), as well as decoy receptor 3.

Nomenclature

LIGHT stands for "homologous to lymphotoxin, exhibits inducible expression and competes with HSV glycoprotein D for binding to herpesvirus entry mediator, a receptor expressed on T lymphocytes". In the cluster of differentiation terminology it is classified as CD258.

Function

The protein encoded by this gene is a member of the tumor necrosis factor (TNF) ligand family. This protein is a ligand for TNFRSF14, which is a member of the tumor necrosis factor receptor superfamily, and which is also known as a herpesvirus entry mediator ligand (HVEML). This protein may function as a costimulatory factor for the activation of lymphoid cells and as a deterrent to infection by herpesvirus. This protein has been shown to stimulate the proliferation of T cells, and trigger apoptosis of various tumor cells. This protein is also reported to prevent tumor necrosis factor alpha mediated apoptosis in primary hepatocyte. Two alternatively spliced transcript variant encoding distinct isoforms have been reported.

Dodge Dart

The original Dodge Dart is an automobile built by Dodge from 1960 to 1976 in North America, with production extended to later years in various other markets. The Dart nameplate was resurrected for a Fiat-derived compact car introduced in 2013.

The Dart name originally appeared on a 1957 show car featuring a body designed by the Italian coachbuilder Carrozzeria Ghia. The production Dart was introduced as a lower-priced, shorter wheelbase, full-size Dodge in 1960 and 1961, became a mid-size car for 1962, and finally was a compact from 1963 to 1976.

First generation (1960–1961)

1960

The first Dodge Darts were introduced for the 1960 model year. They were downsized large cars developed to replace the Plymouth in the standard, low-priced car segment for the Dodge dealer network. Dodge dealers had been selling Plymouths since 1930, but divisional restructuring took the Plymouth brand away from the Dodge dealer network. Project planners proposed the name Dart, only to have Chrysler executives demand an expensive research program which produced the name Zipp. This was promptly rejected in favor of Dart.