Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 17.2, Problem 3CC
WHAT IF? → Suppose X-rays caused a sequence change in the TATA box of a particular gene's promoter. How would that affect transcription of the gene? (See Figure 17 .9.)
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Chapter 17 Solutions
Campbell Biology (11th Edition)
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 - 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 - Which of the following is not true of a codon? (A)...Ch. 17 - The anticodon of a particular tRNA molecule is (A)...Ch. 17 - Which of the following is not true of RNA...Ch. 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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- Q Measuring gene expression of a reporter gene (e.g. gfp) under the control of an unknown promoter could be used to?arrow_forwardWHAT IF? What would be the effect of treating cellswith an agent that removed the cap from mRNAs?arrow_forwardWHAT IF? In eukaryotic cells, mRNAs have been foundto have a circular arrangement in which proteins holdthe poly-A tail near the 5¿ cap. How might this increasetranslation efficiency?arrow_forward
- WHAT IF? In Figure 18.17b, the lower cell is synthesizingsignaling molecules, whereas the upper cell is expressingreceptors for these molecules. In terms of gene regulationand cytoplasmic determinants, explain how these cellscame to synthesize different molecules.arrow_forwardWHAT IF? Imagine a protein that functions in the ERbut requires modification in the Golgi apparatus beforeit can achieve that function. Describe the protein’s paththrough the cell, starting with the mRNA molecule thatspecifies the protein.arrow_forwardQ1: In your own words, define RNA splicing. When during gene expression does it occur? Q2: What do you predict would happen if the introns were not removed from RNA before translation? Why would it be a problem if the introns were not removed? Q3: Where is the mRNA destined to go once it has been transported out of the nucleus?arrow_forward
- Q.Consider this problem: You are working in the lab to study the pattern of paralysis and candidate genes involved in this process. You revealed that homozygous mutation in the SLB gene is the main cause of paralysis. The following sequence of SLB gene at the beginning of the translated region is found in individuals without paralysis. 5‟-GTA GCA TTT AAG CTT CAG TCC AAG - 3‟ (Met Thr Phe Glu Ile Gln Ser Arg). This sequence is however changed to the following sequence in affected individuals 5‟- GTA GCA TTT AAG CTT TAG TCC AAG - 3‟ (Met Thr Phe Glu Ile STOP). What mutation you will identify from this observation? Explain with reason. After identifying mutation if there is any, enlist all the possible repair mechanisms that can be helpful to repair the current situation. Elaborate your answer with that why you think that your suggested repair pathway should be used and how it can be effective for repairing in the current scenario?arrow_forwardMAKE CONNECTIONS How is ligand binding similarto the process of allosteric regulation of enzymes?(See Figure 8.20.)arrow_forwardQ1. Predict the effects (on translation of coat gene and replicase gene) of the following mutations on phage R17 coat gene and replicase gene translation and explain the logic of your answers: a. An amber mutation (premature stop codon) six codons downstream of the coat gene initiation codon. b. Mutations in the stem loop around the coat gene initiation codon that weakens the base-pairing in the stem loop. c. Mutations in the interior of the replicase gene that cause it to base-pair with the coat gene initiation codon.arrow_forward
- Q1: As illustrated here, at what control point is transcription regulated? Q2: What is a possible advantage of regulating gene expression before transcription, versus after? Q3: If you wanted to up-regulate production of the hemagglutinin protein in a tobacco plant carrying the hemagglutinin gene, at which control point(s) would that be possible? Justify your reasoning.arrow_forwardDiscuss Concepts Why do you suppose cells evolved internal response mechanisms using molecules that bind GTP instead of ATP?arrow_forwardWHAT IF? A certain mutation in E. coli changes the lacoperator so that the active repressor cannot bind. Howwould this affect the cell’s production of β-galactosidase?arrow_forward
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