Following are the types of sales people in organizations: 1  The Diplomat As the name suggests, a diplomat is one who always tries to play a safe game. 2  The Rejection Dreader Such sales professionals fear rejections and failures at work.
A phosphodiester bond occurs when exactly two of the hydroxyl groups in phosphoric acid react with hydroxyl groups on other molecules to form two ester bonds. Phosphodiester bonds are central to all life on Earth, as they make up the backbone of the strands of nucleic acid. In DNA and RNA, the phosphodiester bond is the linkage between the 3' carbon atom of one sugar molecule and the 5' carbon atom of another, deoxyribose in DNA and ribose in RNA. Strong covalent bonds form between the phosphate group and two 5-carbon ring carbohydrates (pentoses) over two ester bonds. The phosphate groups in the phosphodiester bond are negatively charged. Because the phosphate groups have a pKa near 0, they are negatively charged at pH 7.
Nucleotide-Polymer Formation. DNA and RNA polymers are constructed by forming phosphodiester bonds between nucleotides. In this arrangement, a phosphate group acts as a bridge between the 5â² position of one sugar and the 3â² position of the next.This arrangement is called the sugar-phosphate backbone of DNA or RNA; the bases hang off to the side.enetic chains acid individual nucleotides. Nucleotides are the building blocks of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Individual nucleotide monomers (single units) are linked together to form polymers, or long chains.