Coin grading. Coin grading is the process of determining the grade or condition of a coin, one of the key factors in determining its value. A coin's grade is generally determined by five criteria: strike, preservation, luster, color, and attractiveness. Several grading systems have been developed. Certification services professionally grade coins for tiered fees.
DNA is composed of repeating units called nucelotides or nucleotide bases. DNA polymerase is responsible for the process of DNA replication, during which a double-stranded DNA molecule is copied into two identical DNA molecules.NA polymerase / DNAP. DNA polymerase (DNAP) is a type of enzyme that is responsible for forming new copies of DNA, in the form of nucleic acid molecules. Nucleic acids are polymers, which are large molecules made up of smaller, repeating units that are chemically connected to one another.
So really, DNA polymerase is a valuable enzyme. Lesson Summary. Believe it or not, there are even more things to understand about DNA replication before we can complete the picture. But for now, let's summarize what we've learned in this lesson. DNA polymerase is the enzyme responsible for adding the daughter nucleotides to the parent DNA strand. In order to help it get started in its process, an RNA primer is built upon the parent strand at the base of the replication fork. The enzyme responsible for building that RNA primer is RNA primase.