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Ch.11 Nucleic Acids Big Molecules with a Big Role
Frost - General, Organic and Biological Chemistry 4th Edition
Frost4th EditionGeneral, Organic and Biological ChemistryISBN: 9780134988696Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoFrost 4th EditionCh.11 Nucleic Acids Big Molecules with a Big RoleProblema 24
Capitolo 7, Problema 24

List the mRNA bases that complement the bases A, T, G, and C in DNA.

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Understand the concept of complementary base pairing: In DNA, the bases pair as A (adenine) with T (thymine) and G (guanine) with C (cytosine). In mRNA, thymine (T) is replaced by uracil (U).
Identify the DNA bases provided in the problem: A (adenine), T (thymine), G (guanine), and C (cytosine).
Determine the complementary mRNA base for each DNA base: A pairs with U, T pairs with A, G pairs with C, and C pairs with G.
Write out the complementary mRNA sequence by substituting each DNA base with its corresponding mRNA base.
Review the sequence to ensure that the complementary base pairing rules have been applied correctly and that thymine (T) has been replaced with uracil (U) in the mRNA.

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Base Pairing Rules

Base pairing rules dictate how nucleotides in DNA and RNA pair with each other. In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). When transcribing DNA to mRNA, adenine pairs with uracil (U) instead of thymine, while cytosine still pairs with guanine.
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Base Pairing Concept 2

Transcription Process

Transcription is the process by which the genetic information in DNA is copied into mRNA. During this process, RNA polymerase synthesizes a complementary strand of mRNA using one of the DNA strands as a template. This is crucial for protein synthesis, as mRNA carries the code from DNA to the ribosome.
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6:37
Transcription: mRNA Synthesis Concept 1

Nucleotide Structure

Nucleotides are the building blocks of nucleic acids like DNA and RNA. Each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base. The specific arrangement of these bases (A, T, G, C in DNA; A, U, G, C in RNA) determines the genetic code and the instructions for building proteins.
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Nucleoside and Nucleotide Formation Concept 2
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The sequence of bases in a DNA template strand is 5'GGCTTATTGCCA3'. What is the corresponding mRNA produced?

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Fill in the following table with the analogous nucleic acid structures:

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b. 5'UUU|CCC|UUU|CCC3'

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Why are there at least 20 tRNAs?

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