DNA does not usually exist as a single strand, but instead as a pair of strands that are held tightly together. [9][12] These two long strands coil around each other, in the shape of a double helix.

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.

2 days 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 …

Nov 28, 2025 · Each strand of a DNA molecule is composed of a long chain of monomer nucleotides. The nucleotides of DNA consist of a deoxyribose sugar molecule to which is …

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 …

Jul 9, 2025 · DNA (deoxyribonucleic acid) is a set of instructions for creating the proteins that make your body work. Two strands of DNA together form a double helix — a bit like a spiral …

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 …

The two DNA strands running anti-parallel will come into play during DNA replication. DNA has (a) and (c) a double helix structure and (b) contains the nitrogenous bases A, T, C, and G Image …

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 …