What are the 3 components of a DNA nucleotide?

What are the 3 components of a DNA nucleotide?

Each nucleotide, in turn, is made up of a nitrogenous base, a pentose sugar, and a phosphate.

What do the 3 and 5 numbers represent on a DNA nucleotide?

The 5′ and 3′ designations refer to the number of carbon atom in a deoxyribose sugar molecule to which a phosphate group bonds.

What elements make up the 5 nucleotides?

Basic structure Each nucleotide consists of a nitrogen-containing aromatic base attached to a pentose (five-carbon) sugar, which is in turn attached to a phosphate group. Each nucleic acid contains four of five possible nitrogen-containing bases: adenine (A), guanine (G), cytosine (C), thymine (T), and uracil (U).

What is the 3/5 structure of DNA?

Nucleotides. All nucleic acids are made up of nucleotides. In DNA, each nucleotide is made up of three parts: a 5-carbon sugar called deoxyribose, a phosphate group, and a nitrogenous base. DNA uses four kinds of nitrogenous bases: adenine (A), guanine (G) cytosine (C), and thymine (T).

What are the DNA components?

The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people.

What functional group does the 5 on DNA represent?

The 5′ and 3′ mean “five prime” and “three prime”, which indicate the carbon numbers in the DNA’s sugar backbone. The 5′ carbon has a phosphate group attached to it and the 3′ carbon a hydroxyl (-OH) group. This asymmetry gives a DNA strand a “direction”.

What are the 3 parts to A monomer in A nucleic acid?

Nucleic acids are giant biomolecules made of monomers called nucleotides. Nucleotides have three components: pentose sugar (5-carbon sugar), phosphate group, and nitrogenous base.

What are the 4 components of DNA?

What is on the 5 end of DNA?

The 5′-end (pronounced “five prime end”) designates the end of the DNA or RNA strand that has the fifth carbon in the sugar-ring of the deoxyribose or ribose at its terminus.

Why are nucleotides added in the 5 to 3 direction?

DNA polymerase can only add nucleotides to the 3′ OH group of the growing DNA strand, this is why DNA replication occurs only in the 5′ to 3′ direction. The 5′-phosphate group of the new deoxyribonucleotide binds to the 3′-OH group of the last deoxyribonucleotide of the growing strand.

What are the 3 types of nucleic acids?


  • Deoxyribonucleic acid.
  • Ribonucleic acid.
  • Artificial nucleic acid.

What are the three types of nucleotides?

The three parts of a nucleotide are the nitrogenous base, pentose sugar, and phosphate group. The three parts of a nucleotide are the base, the sugar, and the phosphate. Nucleotides are the building blocks of DNA (2′-deoxyribonucleic acid) and RNA (ribonucleic acid).