The two DNA strands are known as polynucleotides as they are composed of simpler monomeric units called nucleotides. [2][3] Each nucleotide is composed of one of four nitrogen-containing …

Jul 22, 2025 · A single DNA strand is a polymer, meaning it is a large molecule made up of repeating smaller units called nucleotides. Each nucleotide consists of three distinct parts: a …

1 day ago · DNA is made of two linked strands that wind around each other to resemble a twisted ladder — a shape known as a double helix. Each strand has a backbone made of alternating …

In Watson and Crick’s famous double helix, each of the two strands contains DNA bases connected through covalent (phosphodiester) bonds to a sugar-phosphate backbone.

Each strand of DNA is a polynucleotide composed of units called nucleotides. A nucleotide has three components: a sugar molecule, a phosphate group, and a nitrogenous base.

In the cell, DNA takes on the form of a double helix, which consists of two DNA strands that wind around each other like a twisted ladder. The sugar phosphate backbones of the DNA strands …

The two strands of DNA in a double helix are held together by pairing between the nitrogenous bases in the nucleotides of each strand. The nitrogenous base of a DNA nucleotide can be …

Apr 24, 2010 · To do this, it first has to unzip the nitrogenous bases. All the pairs of "AT" and "GC" are separated. The DNA then has two single strands. At this point new pairs are made, along …

A DNA strand is defined as a polymer of nucleotides with a specific polarity, where one end is called the 5′-end and the other end is called the 3′-end.

DNA is made up of two strands that are coiled around one another in a double helix. Each of the two strands that make up DNA is a polynucleotide chain - so it’s a string of nucleotides one …