Elements in the first row (hydrogen and helium) will have outer electrons in the first energy level. Their principal quantum number is 1. Elements in the second row (lithium through neon) will have valence electrons in the second energy level with a principal quantum number of 2.
The answer is B Single Stranded
Answer: In prehistoric art, finger flutings are lines that fingers leave on a soft surface. Considered a form of cave painting, they occur in caves throughout southern Australia, New Guinea, and southwestern Europe, and were presumably made over a considerable time span including some or all of the Upper Paleolithic.
Explanation:
The appropriate answer is D. storing sugar and providing structure. Polysaccharides are complex carbohydrates. Starch, glycogen and cellulose are polysaccharides in which the constituent molecules are made of several thousand glucose units linked in long chains. Glycogen is vital to nutrition because it is how the body stores excess glucose in muscles and in the liver.
The molecular structure of glycogen is similar to starch except that the polysaccharide chains are longer and more branched than in glycogen.
