Textbook Question
Identify each of the following as a nucleoside or a nucleotide:
b. guanosine
Ch.17 Nucleic Acids and Protein Synthesis
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
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Table of contents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 17, Problem 10c
State whether each of the following components is present in DNA only, RNA only, or both DNA and RNA:
c. uracil
Verified step by step guidance1
Understand the structure of DNA and RNA: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are nucleic acids composed of nucleotides. Each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base.
Recall the nitrogenous bases in DNA: DNA contains four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).
Recall the nitrogenous bases in RNA: RNA contains four nitrogenous bases as well, but instead of thymine (T), it has uracil (U). The other bases—adenine (A), cytosine (C), and guanine (G)—are present in both DNA and RNA.
Identify the component in question: The problem asks about uracil. Based on the information above, uracil is a nitrogenous base that is found only in RNA and not in DNA.
Conclude the answer: Since uracil is exclusive to RNA, it is present in RNA only and not in DNA.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Nucleic Acids
Nucleic acids, including DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), are essential biomolecules that store and transmit genetic information. DNA is typically double-stranded and contains the genetic blueprint for living organisms, while RNA is usually single-stranded and plays a crucial role in protein synthesis and gene expression.
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1:55
Intro to Nucleic Acids Concept 1
Nitrogenous Bases
Both DNA and RNA are composed of nitrogenous bases, which are critical for encoding genetic information. DNA contains adenine (A), thymine (T), cytosine (C), and guanine (G), while RNA contains adenine (A), uracil (U), cytosine (C), and guanine (G). The presence of uracil in RNA instead of thymine is a key distinction between the two nucleic acids.
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1:23Nitrogenous Bases Example 3
Uracil
Uracil is a nitrogenous base found exclusively in RNA, where it pairs with adenine during the formation of RNA strands. Unlike thymine, which is present in DNA, uracil plays a vital role in the structure and function of RNA, particularly in processes like transcription and translation, where it helps in the synthesis of proteins.
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1:57Nitrogenous Bases Example 2
Related Practice
Textbook Question
What nucleic acid subunits are connected in a phosphodiester linkage in a polynucleotide?
Textbook Question
A deficiency of the enzyme adenine transferase causes a lack of adenine for purine synthesis and a high level of adenine in the urine. Draw the condensed structural formula for adenosine monophosphate.
Textbook Question
In the genetic disease uridine monophosphate synthase deficiency, symptoms include anemia, cardiac malformations, and infections. Draw the condensed structural formula for uridine monophosphate.
Textbook Question
Identify each of the following as a nucleoside or a nucleotide:
d. cytidine monophosphate
Textbook Question
State whether each of the following components is present in DNA only, RNA only, or both DNA and RNA:
c. deoxycytidine monophosphate