Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Question
Chapter 17, Problem 3TYK
Summary Introduction
Introduction: Anticodon is a triplet base sequence that is complementary to the triplet codon of an mRNA. During protein synthesis, codons of mRNA are matched with their corresponding amino acids with the help of tRNA.
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Geneticists have found that when they cut out a eukaryotic gene from genomic DNA that they can hybridize one of the strands of that gene to the mRNA for that gene by allowing the strands to hydrogen bond.
Why is it sometimes claimed that alternative splicing of exons from a single gene results in a set of proteins of related function?
If the mRNA produced had the sequence ACGCGU, What would be the tRNA anticodon sequence?
Given the template DNA sequence:
3’ - TAC - CAG - GTT - ACC - ATC - 5’
A.) What will be the mRNA requence corresponding to the template DNA sequence?
B.) What is the amino acid sequence in letter A? ( e.g. Arg, Phe, etc.)
C.) If the coding sequence of the dsDNA will "serve" as the template for transcription, what is the corresponding mRNA sequence?
D.) With the mRNA transcript in letter C, what will be the amino acid sequence? ( e.g. Arg, Phe, etc.)
Chapter 17 Solutions
Study Guide for Campbell Biology
Ch. 17 - a. In what three ways does RNA differ from DNA? b....Ch. 17 - Prob. 2IQCh. 17 - Prob. 3IQCh. 17 - How does the mRNA that leaves the nucleus differ...Ch. 17 - Prob. 5IQCh. 17 - In the following diagrams of polypeptide...Ch. 17 - What determines if a ribosome becomes bound to the...Ch. 17 - Define the following terms and explain what type...Ch. 17 - You have been introduced to several types of RNA...Ch. 17 - Prob. 2SYK
Ch. 17 - What is the genetic code? Explain redundancy and...Ch. 17 - Prepare a concept map showing the types and...Ch. 17 - Prob. 1TYKCh. 17 - Transcription involves the transfer of information...Ch. 17 - Prob. 3TYKCh. 17 - Prob. 4TYKCh. 17 - Which of the following is a statement of the...Ch. 17 - Prob. 6TYKCh. 17 - Prob. 7TYKCh. 17 - Prob. 8TYKCh. 17 - Which of the following is true of RNA processing?...Ch. 17 - Prob. 10TYKCh. 17 - Prob. 11TYKCh. 17 - Prob. 12TYKCh. 17 - Prob. 13TYKCh. 17 - Prob. 14TYKCh. 17 - What type of bonding is responsible for...Ch. 17 - Prob. 16TYKCh. 17 - Prob. 17TYKCh. 17 - Prob. 18TYKCh. 17 - Prob. 19TYKCh. 17 - Prob. 20TYKCh. 17 - Prob. 21TYKCh. 17 - Prob. 22TYKCh. 17 - Prob. 23TYKCh. 17 - Prob. 24TYKCh. 17 - Prob. 25TYKCh. 17 - Prob. 26TYKCh. 17 - Prob. 27TYKCh. 17 - Prob. 28TYK
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- A mutation is found in a tRNA-encoding gene. The wild type (non-mutant) allele (version) produces a tRNA that recognizes the codon GAA, and is charged with the amino acid glutamic acid (Glu). The mutant tRNA is still charged with Glu, but it recognizes the codon UAA. What effect will this have on translation in these cells? How will the proteins produced be different? Speculate: is this mutation more likely to be beneficial or harmful?arrow_forwardIf the mRNA produced had the sequence ACGCGU,what would be the tRNA anticodo sequence?arrow_forwardConsider the following tRNAs, where the numbered forms represent the amino acids associated with them, answer briefly: PICTURE Question 1: The numbering indicates the order in which these tRNAs are recruited to the A site of the ribosome. Write the sequence of the mRNA being translated in the 5' - 3' direction Question 2: What is the amino acid sequence of the produced polypeptide? Question 3: Researchers discover that a mutation is in the anticodon of the gene encoding the proline tRNA of an individual. The anticodon sequence is normally 3' GGA 5', but in this individual the anticodon sequence is 3' GGG 5'. It appears that this individual suffers no adverse consequences. How can this be? (2 response items)arrow_forward
- if the following DNA sequence were transcribed, which of the following describes the output of this process? 3'- TCTGGACA-5' A. This would produce a protein that looks like 5'- A G A C C U G U -3' B. This would produce a tRNA that looks like 3'- A G AC C U G U -5' C. This would produce an mRNA that looks like this: 5'- A G AC C U G U -3' D. This would produce an mRNA that looks like 3'- U C U G G A CA -5' E. This would produce another strand of DNA that 0ok like 5-AG ACCT GT-3. ..arrow_forward(a) Write the sequence of the mRNA molecule synthesized from a DNA template strand having the following sequence:5'–ATCGTACCGTTA–3' (b) What amino acid sequence is encoded by the following base sequence of an mRNA molecule? Assume that the reading frame starts at the 5’ end.5'–UUGCCUAGUGAUUGGAUG–3! (c) What is the sequence of the polypeptide formed on addition of poly(UUAC) to a cell-free proteinsynthesizing system?arrow_forwardThe number of codon binding sites in an mRNA-ribosome complex that can be occupied at the same time by activated tRNA molecules is; * A. 2 B. 3 C. 4 D. 5 Which is a characteristics of the normal genetic code? * A. one codon can code for only one amino acid B. one amino acid can have only one codon C. one tRNA molecule can bind to only one codon D. one aminoacyl-tRNA synthetase can react with only one tRNA Which of the following describes the effect of a point mutation on amino acid identity in a protein? * A. The identity of two amino acid must change B. The identity of one amino acid may change C. The identity of one amino acid must change D. The identity of one amino acid never change Which of the following statements is true regarding introns? *…arrow_forward
- Refer to the DNA sequence provided:3’ -TACTGAAGCGGCAGCCCCGCATGAGTAGACCTTACT-5’ b. What is the amino acid sequence of the polypeptide chain that will be translated from the mRNAin (a)? (The question for A is this: What is the mRNA transcript of the anticoding strand of the DNA model?)arrow_forwardWhich of the following statements best describes the initiation of translation? A) The large and small ribosomal subunits scan the mRNA in the 3'–5' direction until the promoter is reached. B) A tRNA with the anticodon, AUG, enters the ribosomal complex and binds to the mRNA at the A site. C) The mRNA containing the start codon, AUG, sits at the P site and forms a complex with the corresponding tRNA, and the large and small ribosomal subunits. D) The mRNA attaches to the large ribosomal subunit and once the start codon reaches the A site, the tRNA binds and the small subunit completes the complex.arrow_forwardRefer to a genetic code table for the question. below is a portion of the template strand of a particular gene sequence. Which of the following would be the correct sequence of amino acids in the protein that this portion of the gene encodes? (Note that there are no entrance in this gene sequence, and this portion is found in the middle of the coding sequence, past the start codon, so you should transcribe and translate the entire portion of this sequence) template DNA : 3' - ACG GGT TCC TTT AAC GCG TAG -5' A) Thr-Gly-Ser-Phe-Asn-Ala B) Cys-Pro-Arg-Lys-Leu-Arg-Ile C) there is not enough information given to determine the amino acid sequence of this portion of the gene .arrow_forward
- A tRNA anticodon has the base sequence CCG. Identify the DNA base sequence that was used to produce the codon that will bind it to this anticodon?arrow_forwardAfter Drosophila DNA has been treated with a restriction enzyme, the fragments are inserted into plasmids and selected as clones in E. coli. With the use of this “shotgun” technique, every DNA sequence of Drosophila in a library can be recovered.a. How would you identify a clone that contains DNA encoding the protein actin, whose amino acid sequence is known?b. How would you identify a clone encoding a specific tRNA?arrow_forwardYou take DNA samples from a family with a history of the genetic disease spinal muscular atrophy, which results from many different mutations in the SMA gene. One mutation in the SMA gene is a 240-bp in-frame deletion mutation in the middle of an exon. Data from this family shows you that several individuals from the family have this mutation. What do you predict that you would find when comparing the mRNA and protein products of the mutated and unmutated SMA gene? Select all that apply. 1. The mRNA from the SMA is more stable than unmutated SMA mRNA. 2. The pre-mRNA from the SMA mutant is shorter than the unmutated SMA pre-mRNA. 3. The mature mRNA from the SMA mutant is longer than the unmutated SMA mRNA. 4. The protein from the mutated SMA is shorter than the unmutated SMA protein.arrow_forward
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