Question: What Is A Nucleotide And What Are Its Three Parts?

Nucleotides are composed of three subunit molecules: a nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates. The four nucleobases in DNA are guanine, adenine, cytosine and thymine; in RNA, uracil is used in place of thymine.

What are the three parts of a nucleotide?

The building blocks of DNA are nucleotides, which are made up of three parts: a deoxyribose (5-carbon sugar), a phosphate group, and a nitrogenous base (Figure 9.3).

What is a nucleotide in DNA?

Listen to pronunciation. (NOO-klee-oh-tide) A molecule consisting of a nitrogen-containing base (adenine, guanine, thymine, or cytosine in DNA; adenine, guanine, uracil, or cytosine in RNA), a phosphate group, and a sugar (deoxyribose in DNA; ribose in RNA).

What is a nucleotide and what are its three parts quizlet?

Nucleotides each have three parts: phosphate, sugar molecule, and one of four bases. The bases include: A, (adenine), g (guanine), t (thymine), c (cytosine). The phosphate and sugar molecule bonds form the backbone or hand rail of the DNA (staircase), but the genetic key is in the steps (of the stairs): the bases.

What are 3 nucleic acids examples?

Examples of Nucleic Acids

  • deoxyribonucleic acid (DNA)
  • ribonucleic acid (RNA)
  • messenger RNA (mRNA)
  • transfer RNA (tRNA)
  • ribosomal RNA (rRNA)

Which of the 3 parts of a nucleotide helps determine the code or sequence of a gene?

Each nucleotide contains one of four nitrogen-containing bases: adenine (A), thymine (T), cytosine (C) and guanine (G). The sequence of these bases constitutes the genetic code – that specifies the order and number of amino acids in a protein.

What are the 4 nucleotides?

Because there are four naturally occurring nitrogenous bases, there are four different types of DNA nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C).

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What are the 2 common parts of a nucleotide?


  • a nitrogenous base.
  • a five carbon sugar.
  • at least one phosphate group.

What are the 4 functions of nucleotides?

Functioning of Nucleotides:

  • Nucleotides are the basic units of nucleic acids (DNA and RNA).
  • Cyclic Nucleotides Act as Regulatory Chemicals.
  • Nucleotides of B-Complex Vitamins Function as Coenzymes.
  • Higher nucleotides function as energy carriers, e.g. ATP, GTP, UTP and TTP.

What are the 3 parts of this monomer?

The monomers of DNA are called nucleotides. Nucleotides have three components: a base, a sugar (deoxyribose) and a phosphate residue. The four bases are adenine (A), cytosine (C), guanine (G) and thymine (T).

What are the 3 parts of a DNA nucleotide and how are they connected to each other?

What are the three parts of a DNA nucleotide, and how are they connected to each other? The three parts are a deoxyribose sugar, a phos- phate group, and a nitrogenous base. The phosphate group and the base are connected to different parts of the sugar.

What are the 3 structural components of an RNA nucleotide monomer?

Just like in DNA, RNA is made of monomers called nucleotides. Each nucleotide is made up of three components: a nitrogenous base, a pentose (five-carbon) sugar called ribose, and a phosphate group.

What is structure of nucleotide?

A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).

What are nucleotides examples?

Examples of nucleotides with only one phosphate group:

  • adenosine monophosphate (AMP)
  • guanosine monophosphate (GMP)
  • cytidine monophosphate (CMP)
  • uridine monophosphate (UMP)
  • cyclic adenosine monophosphate (cAMP)
  • cyclic guanosine monophosphate (cGMP)
  • cyclic cytidine monophosphate (cCMP)
  • cyclic uridine monophosphate (cUMP)
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What are the 3 main functions of nucleic acids?

Nucleic acids function to create, encode, and store biological information in cells, and serve to transmit and express that information inside and outside the nucleus.