DNA Lengths and Nucleotide Counts

The two types of nitrogenous bases are Purines (Adenine and Guanine) and Pyrimidines (Cytosine, Uracil, and Thymine).

The three components of a nucleotide are a nitrogenous base, a pentose sugar, and a phosphate group.

Thymine is present in DNA but not in RNA.

<p>A nucleoside is formed when a nitrogenous base is linked to the OH of 1' C pentose sugar through a N-glycosidic linkage. A nucleotide is formed when a phosphate group is linked to OH of 5' C of a nucleoside through a phosphoester linkage.</p> Signup and view all the answers

<p>Nucleotides are joined through 3'-5' phosphodiester linkage to form a polynucleotide chain.</p> Signup and view all the answers

<p>A nucleoside consists of a nitrogenous base linked to a sugar molecule, while a nucleotide is a nucleoside with one or more phosphate groups attached.</p> Signup and view all the answers

<p>The end of a polynucleotide chain that has a free phosphate moiety at the 5' -end of the sugar is referred to as the 5’-end. The end that has a free OH of the 3'C group is referred to as the 3' -end.</p> Signup and view all the answers

<p>The three components of a nucleotide are a nitrogenous base, a sugar molecule, and one or more phosphate groups.</p> Signup and view all the answers

<p>Nucleotides are joined together through 3'-5' phosphodiester linkages between the sugar and phosphate groups.</p> Signup and view all the answers