Q:

What are the monomers of DNA and RNA?

A:

The monomers of DNA and RNA are nucleotides, which are made up of a phosphate group, a five-carbon sugar and a nitrogenous base. In DNA, the nitrogenous bases are adenine, cytosine, guanine and thymine. In RNA, the nitrogenous bases are adenine, guanine, cytosine and uracil.

DNA and RNA is a polymer, or macromolecule, made up of many similar smaller molecules covalently bonded together. These smaller molecules are called monomers, and the specific monomers vary depending on the macromolecule (protein, carbohydrates or nucleic acids). Because DNA and RNA are nucleic acids, the monomers that form them are nucleotides, which are molecules made up of a nitrogenous base, a five-carbon sugar and a phosphate group. According to About, these nucleotides are covalently bonded together when the nitrogenous base of one nucleotide corresponds with the nitrogenous base of another nucleotide.

According to How Stuff Works, the four nitrogenous bases fall into two categories: purines and pyrimidines. The purines are double-ringed, and the pyrimidines are single-ringed. When a nucleotide bonds to another nucleotide, a purine base and a pyrimidine base hook up. Adenine pairs up with thymine, and cytosine always pairs up with guanine. After they bond, the nucleotides form the double helix of DNA.


Is this answer helpful?

Similar Questions

  • Q:

    What are the components of DNA?

    A:

    DNA is a long molecule composed of two chains of smaller molecules called nucleotides, each which contain a region of nitrogen called the nitrogenous base, a carbon-based sugar molecule called deoxyribose and a region of phosphorus called the phosphate group. There are four types of nitrogenous bases: adenine (abbreviated as A), thymine (abbreviated as T), guanine (abbreviated as G) and cytosine (abbreviated as C).

    Full Answer >
  • Q:

    What is DNA made from?

    A:

    DNA is made of repeating units called nucleotides. The four nucleotides in DNA are adenine, cytosine, guanine and thymine. Adenine binds with thymine, and guanine binds with cytosine.

    Full Answer >
  • Q:

    What are the repeating units that DNA is made of called?

    A:

    DNA is made of repeating units called nucleotides. The four nucleotides in DNA are adenine, cytosine, guanine and thymine. Adenine binds with thymine, and guanine binds with cytosine.

    Full Answer >
  • Q:

    What is a CAAT box?

    A:

    The CAAT box refers to a short consensus sequence of nucleotides in DNA that occur close to (about 80 base pairs away) the transcription start site of a gene in eukaryotes. The transcription start site of a gene is where the RNA polymerase II begins making RNA.

    Full Answer >

Explore