From there, each one has differences. First, proteins are polymers of amino acids, which are organic molecules with an acidic group (carbon/oxygen) at one end of their backbone and an amine (nitrogen) group at the other end.The side chains contain carbon and sometimes oxygen, nitrogen, or sulfur, and some of the side chains are basic.hey are similar to DNA by containing monosaccharide units, but in a polysaccharide these are usually 5 or 6-carbon units and they are strung together in chains of 10 or more sugars. They are different from proteins and DNA by not being acidic (or basic).
Ursa Minor. The northern circumpolar constellation of Ursa Minor was one of the 48 original constellations listed by Ptolemy, and remains one of the 88 modern constellations recognized by the IAU. Ursa Minor is currently the location of the north celestial pole, yet in several centuries, due the precession of the equinoxes, it will change. Ursa Minor covers 256 square degrees of sky and ranks 56th in size. It contains 7 main stars in its asterism and has 23 Bayer Flamsteed designated stars within its confines. Ursa Minor is bordered by the constellations of Draco, Camelopardalis and Cepheus.
Instead, weâre located in a minor arm of the galaxy. Our local spiral arm is sometimes Orion Arm, or sometimes the Orion Spur. Itâs between the Sagittarius and Perseus Arms of the Milky Way. The image below shows it. Our sun is located the Orion Arm, or Orion Spur, of the Milky Way galaxy.Itâs a minor spiral arm, located between two other arms. Image updated in 2010 by R. Hurt on Wikimedia Commons. Our local Orion Arm of the Milky Way is some 3,500 light years across.Itâs approximately 10,000 light years in length.Our sun, the Earth, and all the other planets in our solar system reside within this Orion Arm. Weâre located close to the inner rim of this spiral arm, about halfway along its length.ur local Orion Arm of the Milky Way is some 3,500 light years across. Itâs approximately 10,000 light years in length. Our sun, the Earth, and all the other planets in our solar system reside within this Orion Arm. Weâre located close to the inner rim of this spiral arm, about halfway along its length.