A series of nucleotides linked together

Two strands of nucleotides wound about each other; structure of DNA

The alternating chain of sugar and phosphate to which the DNA and RNA nitrogenous bases are attached

Bases with a double-ring structure

Cytosine, Thymine, and Uracil have a single ring structure

Direction in which DNA and RNA is synthesized.

Relation between two nucleotide strands of DNA in which each purine on one strand pairs with a specific pyrimidine on the opposite strand - A and T; C and G

A long molecule consisting of many similar or identical monomers linked together.

Monomers of proteins

A simple compound whose molecules can join together to form polymers

In proteins, a process in which a protein unravels and loses its native conformation, thereby becoming biologically inactive. In DNA, the separation of the two strands of the double helix.