Domanda del libro di testo
There are different tRNAs for each amino acid. What is one major way to differentiate among the tRNAs for each amino acid?
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Ch.26 Nucleic Acids and Protein Synthesis
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 26, Problema 71
Insulin is synthesized as preproinsulin, which has 81 amino acids. How many heterocyclic bases must be present in the informational DNA strand to code for preproinsulin (assuming no introns are present)?
Guida verificata passo dopo passo1
Understand the relationship between amino acids and DNA codons: Each amino acid in a protein is coded for by a sequence of three nucleotides (a codon) in the DNA. This means that for every amino acid, there are three nucleotides required in the DNA sequence.
Determine the total number of amino acids in preproinsulin: The problem states that preproinsulin consists of 81 amino acids.
Calculate the total number of nucleotides required: Multiply the number of amino acids (81) by the number of nucleotides per codon (3). Use the formula: , where is the total number of nucleotides.
Recognize that each nucleotide corresponds to a heterocyclic base: The four heterocyclic bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G). Therefore, the total number of nucleotides calculated in the previous step is equal to the number of heterocyclic bases required.
Conclude that the total number of heterocyclic bases required is equal to the total number of nucleotides calculated in step 3. This represents the informational DNA strand needed to code for preproinsulin.
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Genetic Code
The genetic code is the set of rules by which information encoded in genetic material is translated into proteins. It consists of codons, which are sequences of three nucleotides that correspond to specific amino acids. Understanding the genetic code is essential for determining how many nucleotides are needed to code for a given number of amino acids.
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Percorso guidato
03:25
The Genetic Code Concept 1
Amino Acids and Codons
Amino acids are the building blocks of proteins, and each amino acid is encoded by a specific sequence of three nucleotides, known as a codon. Since preproinsulin consists of 81 amino acids, the total number of codons required to code for it can be calculated by multiplying the number of amino acids by three, which is crucial for understanding the DNA sequence needed.
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3:03Amino Acid Catabolism: Amino Group Example 2
DNA Structure
DNA is composed of four nucleotides, which include adenine (A), thymine (T), cytosine (C), and guanine (G). The sequence of these nucleotides encodes genetic information. In the context of the question, understanding the structure of DNA helps in determining how many nucleotides are necessary to code for the preproinsulin protein, as each amino acid corresponds to a specific triplet of these bases.
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3:27DNA Double Helix Concept 1
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What tetrapeptide is synthesized from the informational DNA sequence G-T-C-A-G-T-A-C-G-T-T-A?
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Domanda del libro di testo
Suppose that 22% of the nucleotides of a DNA molecule are deoxyadenosine and during replication the relative amounts of available deoxynucleoside triphosphates are 22% dATP, 22% dCTP, 28% dGTP, and 28% dTTP. What deoxynucleoside triphosphate is limiting to the replication? Explain.
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Domanda del libro di testo
What is the general shape and structure of a tRNA molecule?
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