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Nucleotides are the building blocks of the DNA and RNA used as genetic material. Nucleotides also are used for cell signaling and to transport energy throughout cells. You may be asked to name the three parts of a nucleotide and explain how they are connected or bonded to each other.


The 3 main parts of DNA are: 1.Deoxyribose, a ringed 5-carbon sugar 2.a nitrogenous base, which can be either a purine base: adenine,guanine or a pyrimidine base:thymine,cytosine 3.a phosphate group.


The DNA nucleotide consists of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The portion of the nucleotide that contains a negative charge is the phosphate group.


One part of the phosphodiester bond is between the phosphate and the 5′ carbon of deoxyribose, and the other is between the phosphate and the 3′ carbon of deoxyribose. Thus, each sugar-phosphate backbone is said to have a 5′-to-3′ polarity, and understanding this polarity is essential in understanding how DNA fulfills its roles.


DNA is a long polymer made from repeating units called nucleotides. The structure of DNA is dynamic along its length, being capable of coiling into tight loops and other shapes. In all species it is composed of two helical chains, bound to each other by hydrogen bonds.Both chains are coiled around the same axis, and have the same pitch of 34 angstroms (Å) (3.4 nanometres).


The DNA molecule is made up of two long polymers connected by the bonding of hydrogen atoms and coiled in the shape of double helix. Each of the two polymers contains many structures which are called nucleotides, which, in turn, are further broken down into three parts: Deoxyribose, a phosphate group, and a nitrogenous base.


Putting It All Together. To recap, we have covered what a nucleotide is, what the three parts of a nucleotide are, we have covered the specifics of nitrogenous bases, pentose sugars, and phosphates, and we have discussed how nucleotides differ in DNA and RNA.


The three parts of a DNA molecule are the phosphate group, sugar, and nitrogen-containing base. They are connected by nucleotides. If 15% of the nucleotides in a DNA molecule contain guanine, what percentage of the nucleotides contains each of the other 3 bases?


Strands of DNA are made of the sugar and phosphate portions of the nucleotides, while the middle parts are made of the nitrogenous bases. The nitrogenous bases on the two strands of DNA pair up, purine with pyrimidine (A with T, G with C), and are held together by weak hydrogen bonds.


1) RNA helicase separates DNA strand 2) RNA nucleotides pair with DNA nucleotides on one side of the DNA chain 3) a promoter (all 3 types of RNA are produced from transcription) 4) RNA polymerase begins bonding the ribose sugars to the phosphates of adjacent nucleotides 5) RNA polymerase hits a sequence of DNA bases that signal it to stop, the termination signal, & the new strand of mRNA is .....