As in DNA replication, RNA is synthesized in the 5' â 3' direction (from the point of view of the growing RNA transcript). Only one of the two DNA strands is transcribed. This strand is called the template strand, because it provides the template for ordering the sequence of nucleotides in an RNA transcript.
The properties of the chemical elements are summarized on the periodic table, which organizes the elements by increasing atomic number into rows (periods) in which the columns (groups) share recurring (periodic) physical and chemical properties.
from wikipedia the free encyclopedia the periodic table of the chemical elements is a tabular display of the known chemical elements the elements are arranged by electron structure so that many chemical properties vary regularly across the tableeach element is listed by its atomic number and chemical symbol group is a vertical column in the periodic table of the elements there are 18 groups in the standard periodic table elements in a group have similar configurations of their valence shell electrons which gives them similar properties