Structure of epinephrine. Epinephrine is derived from tyrosine, an amino acid. Epinephrine is sometimes referred to as a catecholamine as it contains the catechol moiety. This is a part of the molecule that contains the group C 6 H 4 (OH) 2. Dopamine and norepinephrine are also referred to as catecholamines. They too are synthesized from tyrosine and contain the catechol moiety.
Mount Everest. Standing at about 29,029 feet (8,848 meters), Everest boasts the top spot for the tallest mountain in the world. It is located on the border between Sagarmatha Zone, Nepal, and Tibet, China and is part of the Himalayan Mountain Range.ho Oyu is the sixth highest mountain in the world and stands at about 26,906 feet (8,201meters) high. Like most of the other Himalayan Mountains, it lies between Nepal and China (Tibet). Its name in Tibetan means âTurquoise Goddessâ.
Surprisingly, there are several other mountains that could also be called the worldâs tallest mountain if you use a different way to measure. Mount Everest is the place where the Earthâs surface is the greatest distance from sea level. However, if you measured the mountain that is highest from top to bottom, in other words from its base on land to its highest point, then Mount McKinley in Alaska (also called Denali) would be the tallest. It rises about 18,400 ft/5,600 m from the ground below it. If you measured the mountain that is tallest from its base and included mountains that have a base underwater, then Mauna Kea in Hawaii would be the tallest. It is a volcano that has risen 33,464 ft/ 10,200 m/6.3 miles above the sea floor. One last mountain that could be considered the worldâs tallest is Chimborazo in Ecuador.