Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Question
Chapter 17, Problem 4TYU
Summary Introduction
Introduction: During transcription, the
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Students have asked these similar questions
Which of the following is true of the timing of RNA processing?
The premise is false; mRNA processing does not occur in eukaryotes
mRNA processing occurs in the cytosol after pre-mRNA is exported from the nucleus
mRNA processing occurs co-transcriptionally
mRNA processing occurs in the nucleus after transcription has terminated
Which one of the following options is NOT a step in RNA processing?
Addition of the 5’ G cap
Addition of the 3’ poly A tail
Splicing to remove exons and connect the retained introns
Splicing to remove introns and connect the retained exons
During translation, the mRNA template is read and amino acids corresponding to the codons are linked together. Use the labels on the
left to identify the components of the image that are involved in translation.
the growing
polypeptide chain
that becomes the
new protein
the mRNA
transcript
an uncharged tRNA
that has been
released from the E
site
a charged tRNA,
carrying an amino
acid
the P site holds a
tRNA with its amino
acid bonded to the
polypeptide chain
the A site into which
the charged tRNA
will bind
the ribosome
ACC
44
GGGU
a charged tRNA,
carrying an amino
acid
AUG
UAA
Chapter 17 Solutions
Campbell Biology
Ch. 17.1 - Prob. 1CCCh. 17.1 - What polypeptide product would you expect from a...Ch. 17.1 - Prob. 3CCCh. 17.2 - MAKE CONNECTIONS In a research artide about...Ch. 17.2 - What enables RNA polymerase to start transcribing...Ch. 17.2 - WHAT IF? Suppose X-rays caused a sequence change...Ch. 17.3 - There are about 20,000 human protein-coding genes....Ch. 17.3 - How is RNA splicing similar to how you would watch...Ch. 17.3 - Prob. 3CCCh. 17.4 - What two processes ensure that the correct amino...
Ch. 17.4 - Prob. 2CCCh. 17.4 - Prob. 3CCCh. 17.4 - WH AT IF? In eukaryotic cells, mRNAs have been...Ch. 17.5 - What happens when one nucleotide pair is lost from...Ch. 17.5 - MAKE CONNECTIONS Individuals heterozygous for the...Ch. 17.5 - WHAT IF? DRAW IT The template strand of a gene...Ch. 17.5 - Prob. 4CCCh. 17 - Describe the process of gene expression, by which...Ch. 17 - What are the similarities and differences in the...Ch. 17 - What function do the 5' cap and the poly-A tail...Ch. 17 - Prob. 17.4CRCh. 17 - What will be the results of chemically modifying...Ch. 17 - In eukaryotic cells, transcription cannot begin...Ch. 17 - Prob. 2TYUCh. 17 - The anticodon of a particular tRNA molecule is (A)...Ch. 17 - Prob. 4TYUCh. 17 - Which component is not directly involved in...Ch. 17 - Using Figure 17.6, identify a 5' 3' sequence of...Ch. 17 - Prob. 7TYUCh. 17 - Would the coupling of the processes shown in...Ch. 17 - Prob. 9TYUCh. 17 - Prob. 10TYUCh. 17 - scientific inquiry Knowing that the genetic code...Ch. 17 - Prob. 12TYUCh. 17 - Prob. 13TYU
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Similar questions
- A certain mRNA strand has the following nucleotide sequence: 5AUGACGUAUAACUUU3 What is the anticodon for each codon? What is the amino acid sequence of the polypeptide? (Use Figure 13-5 to help answer this question.) Figure 13-5 The genetic code The genetic code specifies all possible combinations of the three bases that compose codons in mRNA. Of the 64 possible codons, 61 specify amino acids (see Figure 3-17 for an explanation of abbreviations). The codon AUG specifies the amino acid methionine and also signals the ribosome to initiate translation (start). Three codonsUAA, UGA, and UAGdo not specify amino acids; they terminate polypeptide synthesis (stop).arrow_forwardBriefly describe the function of the following in protein synthesis. a. rRNA b. tRNA c. mRNAarrow_forwardPortions of eukaryotic mRNA sequence that are removed during RNA processing are . a. exons b. caps c. poly-A tails d. intronsarrow_forward
- Which of the following is/are not found in a bacterial mRNA molecule? (a) stop codon (b) upstream leader sequences (c) downstream trailing sequences (d) start codon (e) promoter sequencesarrow_forwardEukaryotic mRNA: usessnRNPs to cut out introns and seal together translatableexons. uses a spliceosome mechanism made of DNA to recognizeconsensus sequences to cut and splice. has a guanine cap on its 39 end and a poly(A) tail on its 59 end. is composed of adenine, thymine, guanine, and cytosine. codes the guanine cap and poly(A) tail from the DNAtemplate.arrow_forwardWhich of the following is/are typically removed from pre-mRNA during nuclear processing in eukaryotes? (a) upstream leader sequences (b) poly-A tail (c) introns (d) exons (e) all the precedingarrow_forward
- Which of the following is NOT an event associated with translation termination? A stop codon enters the A site on the ribosome. A Release Factor enters the A site A terminal amino acid is added to the polypeptide to signal the end of translation. Release Factor mediates the hydrolysis of the polypeptide from the tRNA at the P site. The polypeptide and tRNA are released and the ribosomal subunits are separated.arrow_forwardWhich of the following step acts before the others in protein translation? Oribosome large subunits binds to mRNA O TRNA alignment with mRNA ribosome small subunits binds to mRNA amino acid chain elongationarrow_forwardmRNA does which of the following? bring genetic information from the nucleus to the cytoplasm bring genetic information from the cytoplasm to the nucleus transport amino acids to the ribosomes protect the RNA by capping and poly A -tailingarrow_forward
- Which of the following statements concerning translation is NOT correct? O b. O c. Polypeptide chain is extended from the C- terminus to the N-terminus. O d. The first codon of protein synthesis is AUG. Prokaryotic transcription and translation are coupled (i.e. they occur almost at the same time and at the same place). O e. Protein synthesis takes place in ribosome. During protein synthesis, the mRNA is read from 5' to 3' direction.arrow_forwardA segment of mRNA produced by the normal order of DNA nucleotides and the corresponding amino acid chain are given below: mRNA segment: GCC UAC AAU GCG Amino acid chain: Ala-Tyr-Asn-Ala Knowing that insertion mutations shift the triplets by one base, if an insertion mutation adds a U to the beginning of that mRNA segment, what will be the new triplet/codon grouping and the new amino acid chain? Group of answer choices a. U GCC UAC AAU GCG; Ala-Tyr-Asn-Ala b. UCC UAC AAU GCG; Ser-Leu-Gln-Cys c. UGC CUA CAA UGC G; Cys-Leu-Gln-Cys d. UGC CUA CAA UGC G; Ala-Tyr-Asn-Ala e. UGCC UAC AAU GCG; Cys-Tyr-Asn-Alaarrow_forwardA codon is: three amino acids on a polypetide that are snipped off by the helicase enzyme sets of nucleotides on the tRNA, opposite the anti-codon sequence an mRNA component that specifies a specific amino acid that which attaches to the mRNA triplet sequence a don that goes with another don the protein that begins transcription by breaking H bondsarrow_forward
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