0
A DNA nucleotide is composed of the 5-carbon sugar deoxyribose, a phosphate group, and one of four nitrogen bases; adenine (A), thymine (T), cytosine (C), and quanine (G). A molecule of DNA is composed of two strands of nucleotides. The nucleotide strands are oriented such that the sugar and phosphate groups alternate down the outside of the strand, and the nitrogen bases are oriented toward the center of the two strands. In a DNA molecule, the two strands of nucleotides pair according to the base-pairing rule, which states that adenine pairs with thymine (A-T), and cytosine pairs with guanine (C-G). The nitrogen bases of the complimentary strands of DNA are held together by hydrogen bonds. Because of the 3-D structure of the nucleotides, the two DNA strands twist into a double helix, often likened to a twisted ladder.
Refer to related links for illustrations.
What else can I help you with?
What role does the deoxyribose sugar play in the structure of DNA?
The deoxyribose sugar in DNA serves as the backbone of the DNA molecule, connecting the nucleotide bases together. It provides stability and structure to the double helix shape of DNA.
Is ribose present in DNA?
Yes, ribose is present in DNA as part of the sugar-phosphate backbone of the nucleotide molecules that make up the DNA structure.
Why DNA pol needs 3'OH to attach new nucleotide?
DNA polymerase requires a 3'OH group to attach a new nucleotide because it catalyzes the formation of a phosphodiester bond between the incoming nucleotide and the existing DNA chain. The 3'OH group provides the necessary chemical linkage for the new nucleotide to join the DNA chain during replication.
When bonded together chemically deoxyribose phosphate and an adenine molecule make up?
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.
Definition of DNA nucleotide?
DNA nucleotides are the building blocks of DNA, composed of a sugar molecule (deoxyribose), a phosphate group, and one of four nitrogenous bases: adenine (A), thymine (T), guanine (G), or cytosine (C). They are arranged in specific sequences to form the double helix structure of DNA.
Which nucleotide is not incorporated into the structure of the DNA helix?
Uracil is not incorporated into the structure of the DNA helix. Uracil is found in RNA instead of thymine, which is the corresponding nucleotide in DNA.
What is a repeating structure unit that forms RNA and DNA?
nucleotide
What role does the deoxyribose sugar play in the structure of DNA?
The deoxyribose sugar in DNA serves as the backbone of the DNA molecule, connecting the nucleotide bases together. It provides stability and structure to the double helix shape of DNA.
Is ribose present in DNA?
Yes, ribose is present in DNA as part of the sugar-phosphate backbone of the nucleotide molecules that make up the DNA structure.
Why DNA pol needs 3'OH to attach new nucleotide?
DNA polymerase requires a 3'OH group to attach a new nucleotide because it catalyzes the formation of a phosphodiester bond between the incoming nucleotide and the existing DNA chain. The 3'OH group provides the necessary chemical linkage for the new nucleotide to join the DNA chain during replication.
What role does a bond play in the structure of DNA?
A bond in DNA helps hold the structure together by connecting the nucleotide bases in the double helix. These bonds are essential for maintaining the stability and integrity of the DNA molecule.
What is the order of size between codon chromosome nucleotide DNA and nucleosome?
this is incorrect question, because the size of the DNA is not specified. Without the DNA, it is chromosome > nucleosome > nucleotide. The actual DNA cannot be longer than a chromosome and nucleotide is a monomer of polymeric DNA, so DNA should be somewhere between chromosome and nucleotide.
When bonded together chemically deoxyribose phosphate and an adenine molecule make up?
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.
Smallest to largest cell nucleotide nucleus DNA chromosome?
The smallest structure is a nucleotide, which is the building block of DNA. Multiple nucleotides come together to form DNA, which is contained in the chromosome. The nucleus is the largest structure, containing all the chromosomes in a cell.
Definition of DNA nucleotide?
DNA nucleotides are the building blocks of DNA, composed of a sugar molecule (deoxyribose), a phosphate group, and one of four nitrogenous bases: adenine (A), thymine (T), guanine (G), or cytosine (C). They are arranged in specific sequences to form the double helix structure of DNA.
What are the components and structure of a DNA nucleotide?
DNA nucleotides consist of a phosphate, a deoxyribose (sugar), and a nitrogen base: adenine, guanine, cytosine, thymine.
Name for DNA subunit?
Nucleotide
