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Chapter 17: Problem 6

What are the names and abbreviations of the four nucleotides in RNA?

Short Answer

Expert verified
A (Adenine), C (Cytosine), G (Guanine), U (Uracil)

Step by step solution

01

Identify the Nucleotides

RNA consists of four major nucleotides. These nucleotides are the building blocks of RNA.
02

Name the Nucleotides

The names of these nucleotides are Adenine, Cytosine, Guanine, and Uracil.
03

Provide Abbreviations

The abbreviations of these nucleotides are A for Adenine, C for Cytosine, G for Guanine, and U for Uracil.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Adenine
Adenine, abbreviated as 'A', is one of the four essential nucleotides in RNA. In the structure of RNA, adenine is a purine base, which means it has a double ring structure. These rings are made of carbon and nitrogen atoms.

Adenine pairs with uracil (U) in RNA through two hydrogen bonds. This pairing is crucial because it helps maintain the structure and function of the RNA molecule.

Some other key points about adenine include:

  • It participates in energy transfer as a part of ATP (adenosine triphosphate).
  • It is essential for the synthesis of proteins.
Cytosine
Cytosine, often abbreviated as 'C', is another vital nucleotide in RNA. Unlike adenine, cytosine is a pyrimidine base, which means it has a single ring structure.

In RNA, cytosine pairs with guanine (G). These two bases are held together by three hydrogen bonds, making the cytosine-guanine pairing stable and strong.

Some additional facts about cytosine are:

  • It plays a role in the regulation of genes.
  • It is involved in the repair of DNA.
  • It can be methylated, forming 5-methylcytosine, which is important for genetic regulation.
Guanine
Guanine, abbreviated as 'G', is one of the four chief nucleotides found in RNA. Like adenine, guanine is also a purine base, meaning it has a double ring structure.

Guanine pairs with cytosine (C) in RNA through three hydrogen bonds. This strong pairing is vital for the structure and stability of RNA.

Important points about guanine include:

  • It plays a key role in cellular energy transfer and signaling, as components of GTP (guanosine triphosphate).
  • It is involved in the synthesis of proteins and cellular metabolism.
Uracil
Uracil, represented by 'U', is a unique nucleotide found in RNA. Unlike adenine and guanine, uracil is a pyrimidine base with a single ring structure.

In RNA, uracil pairs with adenine (A) through two hydrogen bonds. This pairing helps maintain the RNA's structure and allows it to function correctly.

Some other important aspects of uracil include:

  • It replaces thymine (found in DNA) in RNA.
  • It plays a crucial role in the process of transcription, where RNA is synthesized from DNA.
  • It is important for the proper functioning of mRNA (messenger RNA), which carries genetic information from DNA to ribosomes for protein synthesis.

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Most popular questions from this chapter

How do the bases thymine and uracil differ?

a. If the DNA double helix in salmon contains \(28 \%\) adenine, what is the percent of thymine, guanine, and cytosine? b. If the DNA double helix in humans contains \(20 \%\) cytosine, what is the percent of guanine, adenine, and thymine?

What are the three different types of RNA?

What is the purpose of a vaccine?

Identify the base and sugar in each of the following nucleosides: a. deoxythymidine b. adenosine c. cytidine d. deoxyguanosine
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