  The uprights are called the backbone and is made up of ribose (a pentose sugar) and phosphate. The rungs are the bases that are the actual coding bit of DNA. These are c â¦ arbon and nitrogen-based molecules that attach to the backbone.he rungs are made up of four nitrogen bases called Guanine, Thymine, Adenine, and Cytosine. Adenine (A) always pairs up with Thymine(T). Guanine (G) always pairs up Cytosin â¦ e(C). The object that connects them is a hydrogen base.
Travel to Ionian islands: Travel information about flights and ferries to Ionian islands. There are airports in Corfu, Lefkada (Aktion/Preveza), Kefalonia, Zakynthos and Kythira. The airports of Corfu, Kefalonia and Zakynthos receive domestic flights from Athens and Thessaloniki and also charter flights from abroad in summer.
Asphalt/Concrete. Princess Juliana International Airport (IATA: SXM, ICAO: TNCM) (also known as Saint Maarten International Airport) is the main airport on the Caribbean island of Saint Martin, located on the Dutch side of the island in the country of Sint Maarten. In 2010, the airport handled 1,645,105 passengers and 60,870 aircraft movements. The airport serves as a hub for Windward Islands Airways and is the major gateway for the smaller Leeward Islands, including Anguilla, Saba, St. BarthÃ©lemy and St. Eustatius. It is named after Juliana of the Netherlands, who as crown princess landed here in 1944, the year after the airport opened.