The DNA is the longest biopolymer discovered. It is made up of two strands that are the polymers of repeating units of deoxyribonucleotides. The deoxyribonucleotides, themselves consist of three moieties:
1. Deoxyribose Sugar: A pentose (5 carbon) Sugar
2. Phosphate: Phosphate group imparts the negative charge to DNA molecule
3. Nitrogenous Bases: These are aromatic compounds that have their basic nature due the presence of Nitrogen.
Two types of bases are found in the DNA molecule
1. Pyrimidine: they are single ringed compounds that are derivative of compound called Pyrimidine. There are two types of Pyrimidines in DNA, Cytosine and Thymine.
2. Purines: Purines are derivative of organic compounds called as Purines and have two rings. There are two Purines: Adenine and Guanine) in DNA.
The dexoribonucleotides are linked by the reaction of Phosphodiester bond to form one strand of DNA>
The DNA molecule.
dna strands
What components make up the backbone of DNA
Deoxyribose sugars and phosphates make up the backbone of DNA.
The backbone of the DNA molecule consists of a sugar, deoxyribose and a phosphate group. --(sugars and phosphates)
A stretched out DNA molecule is referred to as chromatin. Chromatin is the material that makes up chromosomes, and consists of DNA wrapped around histone proteins. It is found in the nucleus of eukaryotic cells.
DNA molecule is wound up around proteins called histones to form a structure known as a chromosome. This coiling helps condense the DNA for efficient storage and organization within the cell.
A chromosome in humans is made up of one long DNA molecule. This DNA molecule is double-stranded and contains thousands of genes.
When bonded together chemically, deoxyribose phosphate and an adenine molecule make up a nucleotide, which is a building block of DNA. This nucleotide contributes to the structure of the DNA molecule by providing the adenine base that pairs with thymine to form the rungs of the DNA ladder.
The rungs that are in the DNA ladder molecule are nucleotides. They are adenine, guanine, thymine and cytosine. Deoxyribose and phosphate make up the backbone of the molecule.
The structure of a DNA molecule is made up of three things: a sugar-phosphate backbone, nucleotide bases (adenine, thymine, cytosine, and guanine), and hydrogen bonds that form between the bases. These components form the double helix shape of the DNA molecule.
Nitrogenous bases, such as adenine, thymine, cytosine, and guanine, along with sugar phosphate groups, make up the DNA molecule. These nitrogenous bases are paired together to form the characteristic double helix structure of DNA.