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describe the three parts of a dna nucleotide

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Question:1)Describe the three parts of a DNA nucleotide 2)relate the base-pairing rules to the structure of DNA 3)Describe the two pieces of information from other scientists that enable James Watson and Francis Crick to discover the double -helical structure of DNA. THANKS

Answers:the three parts are: (1) a nitrogenous base known as purine (adenine (A) and guanine (G)) or pyrimidine (cytosine (C) and thymine (T)); (2) a sugar, deoxyribose; and (3) a phosphate group for base-pairing, adine and guanine always come together as a pair and cytosine and thymine come together AG and CT not sure about who they got hints from to dicover double-helical structure.

Question:how would you desribe the components and structure of a DNA nucleotide?

Answers:A 'DNA nucleotide' is made up of three molecules bonded together. A phosphate molecule, a sugar called deoxyribose, and a nitrogen base. The nitrogen base could be adenine, thymine, guanine or cytosine. The nitrogen base is what connects to its pair in the broken DNA chain during replication with a hydrogen bond.

Question:I think it might be double helix but I'm not completely sure.

Answers:A nucleotide consists of a Phosphate group, a Pentose Sugar and a Nitrogenous base, the Phosphate is bonded to the sugar and the base is also connected to the sugar.

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