There are only four DNA bases, but there are 20 amino acids that can be used for proteins. So, groups of three nucleotides form a word (codon) that specifies which of the 20 amino acids goes into the protein (a 3-base codon yields 64 possible patterns (4*4*4), which is more than enough to specify 20 amino acids.pecifically, the order of nucleotides within a gene specifies the order and types of amino acids that must be put together to make a protein. A protein is made of a long chain of chemicals called amino acids Proteins have many functions: 1  Enzymes that carry out chemical reactions (such as digestive enzymes).
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There are three different scales that can be used to describe paper weight (also called paper density). The first is the U.S. system of Basis Weight, which is the weight in pounds of 500 sheets of paper in its basic sheet size. âBasic sheet sizeâ varies depending on the type, however, which makes it difficult to compare the weights of different types of paper. For instance, the basic sheet size of Bond paper is 17â³x22â³, while the basic sheet size of Tag Stock is 24â³x36â³.