8th grade. 4 years ago. B is not part of a DNA nucleotide. To form a nucleotide, a base connects to the first or primary carbon of ribose or deoxyribose. kekebae kekebae 11/10/2016 Biology High School Which compound is not part of a dna nucleotide? 73% average accuracy. However, the number of phosphates present in one nucleotide of DNA is lower: when it’s part of a DNA strand, a nucleotide contains only one phosphate group. 1441 times. These thermostable enzymes are used frequently in PCR. A free 3' hydroxyl is required to initiate synthesis and magnesium ion is necessary. DNA Structure DRAFT. Nucleotide Structure Courtesy of the National Human Genome Research Institute. When nucleotides are not attached to DNA, they can contain up to three phosphate groups. Which shows the correct complementary base pairing for DNA? A nucleotide is the basic structural unit and building block for DNA. a. adenine b. ribose c .thymine d.deoxyribose real answers only See answer kekebae is waiting for your help. A nucleotide is composed of three distinctive chemical sub-units: a five-carbon sugar molecule, a nucleobase—which two together are called a nucleoside—and one phosphate group.With all three joined, a nucleotide is also termed a "nucleoside monophosphate", "nucleoside diphosphate" or "nucleoside triphosphate", depending on how many phosphates make up the phosphate group. The part of a nucleotide that can be removed without breaking the chain is the thymine for DNA and the uracil for RNA. A nucleotide is composed of 3 parts: * five-sided sugar * phosphate group * nitrogenous base (nitrogen containing) Edit. Edit. In general, optimal activity is achieved at 75 degrees C to 80 degrees C. Like other DNA polymerases, thermophilic DNA polymerases catalyze synthesis of DNA from nucleotide triphosphates. 3. Add your answer and earn points. The nucleotides in the one strand of DNA bind together by a covalent bond. In DNA or RNA molecules, a phosphate from one nucleotide forms a phosphodiester bond with the number 3 carbon in the next nucleotide sugar. DNA consists of two strands of nucleotides wrapped around each other in a double helix. The number 5 carbon of the sugar connects to the oxygen of the phosphate group. DNA: DNA (deoxyribonucleic acid) can be defined as the polymer of nucleotides. by greed123. There are the two purines (double ring structure), adenine (A) and guanine (G) and the 2 pyrimidines (single ring), cytosine (C) and thymine (T). DNA Structure DRAFT. Other Sciences. greed123. The backbone of each strand is made up of alternating phosphates and sugar molecules called deoxyribose. Preview this quiz on Quizizz. In writing nucleotide sequences for nucleic acids, the convention is to write the nucleotides (usually using the one-letter abbreviations for the bases, shown in Figure 28.1.4) starting with the nucleotide having a free phosphate group, which is … These two components are the nucleobases of a nucleotide. 4 years ago. Nucleotides. These building blocks are hooked together to form a chain of DNA. Nucleotides are an essential part of DNA, RNA, and cell function, and they can serve many purposes depending on their structure and chemical compounds. Save. In DNA, there are 4 different nitrogenous bases. A nucleotide is made up of three components: a five carbon pentose sugar either deoxyribose or ribose, a nitrogenous base and a phosphate group. What two parts of a nucleotide do not change throughout the structure of DNA?