This Technical Bulletin was prepared by members of the SSFI Plank-Platform Section. SSFI is a trade association comprising manufacturers of shoring, scaffolding, forming, suspended scaffolding, and planks-platforms. The institute. focuses on engineering and safety aspects of scope products.
The basic building block of DNA is the nucleotide. The nucleotide in DNA consists of a sugar (deoxyribose), one of four bases (cytosine (C), thymine (T), adenine (A), guanine (G)), and a phosphate.Cytosine and thymine are pyrimidine bases, while adenine and guanine are purine bases.The sugar and the base together are called a nucleoside.he nucleotide in DNA consists of a sugar (deoxyribose), one of four bases (cytosine (C), thymine (T), adenine (A), guanine (G)), and a phosphate.
Nucleotides are the components of DNA and RNA. The nucleic acids DNA and RNA are polymers of nucleotide units; that is, they contain a large number of repeating nucleotide units connected by covalent chemical bonds. RNA molecules, for example, can contain as few as 75 nucleotides to more than five thousand nucleotides.he nitrogen-containing base of a nucleotide (also called the nucleobase) is typically a derivative of either purine or pyrimidine, which are heterocyclic compounds (organic compounds that contain a ring structure that has, in addition to carbon, such atoms as sulfur, oxygen, or nitrogen).