EBK CAMPBELL BIOLOGY
11th Edition
ISBN: 8220103613828
Author: Reece
Publisher: PEARSON
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Chapter 17.2, Problem 1CC
MAKE CONNECTIONS → In a research artide about alkaptonuria published in 1902, Garrod suggested that humans inherit two "characters" (alleles) for a particular enzyme and that both parents must contribute a faulty version for the offspring to have alkaptonuria. Today, would this disorder be called dominant or recessive? (See Concept 14.4.)
1. What is a promoter? Is it located at the upstream or downstream end of a transcription unit?
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Chapter 17 Solutions
EBK 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 - 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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- Can you explain?arrow_forwardE30. An electrophoretic mobility shift assay can be used to study the binding of proteins to a segment of DNA. In the experiment shown here, an EMSA was used to examine the requirements for the bind- ing of RNA polymerase II (from eukaryotic cells) to the promoter of a protein-encoding gene. The assembly of general transcription factors and RNA polymerase II at the core promoter is described in Chapter 12 (Figure 12.14). In this experiment, the segment of DNA containing a promoter sequence was 1100 bp in length. The fragment was mixed with various combinations of proteins and then subjected to an EMSA. Lane 1: No proteins added Lane 2: TFID Lane 3: TFIIB Lane 4: RNA polymerase I| Lane 5: TFID + TFIIB Lane 6: TFID + RNA 1 2 4 5 6 polymerase II| Lane 7: TFIID + TFIIB + RNA polymerase I| 1100 bp Explain which proteins (TFIID, TFIIB, or RNA polymerase II) are able to bind to this DNA fragment by themselves. Which transcrip- tion factors (i.e., TFIID or TFIIB) are needed for the binding of…arrow_forwardBoth answer pleasearrow_forward
- helparrow_forwardE27. A cloned gene fragment contains a regulatory element that is recog- nized by a regulatory transcription factor. Previous experiments have shown that the presence of a hormone results in transcriptional acti- vation by this transcription factor. To study this effect, you conduct a electrophoretic mobility shift assay and obtain the following results: Tube: 1 2 3 Transcription factor: Hormone: Explain the action of the hormone.arrow_forward23arrow_forward
- D,E,Farrow_forwardThe enormous complexity in initiating eukaryotic gene transcription seems at first glance to be wasteful. What is the most plausible reason for requiring so many different proteins to assemble on a large array of DNA sequences in order to initiate transcription? O The use of large numbers of proteins and regulatory sequences in DNA opens many possibilities for sophisticated combinatorial gene regulation O The need to open chromatin for transcription demands a much larger number of proteins and regulatory sequences in DNA O The use of large numbers of proteins and regulatory sequences in DNA is essential for alternative splicing of hnRNA in eukaryotes O The larger number of eukaryotic genes demands a correspondingly larger transcription apparatus than that of prokaryotes The larger size of eukaryotic cells demands a correspondingly larger transcription apparatus than that of prokaryotesarrow_forward24arrow_forward
- pls help answer this question!! provide the asners in order if possible, I really appreciate your help!arrow_forwardⒸ Macmillan Learning Classify the given examples of prokaryotic gene expression as positive or negative gene regulation. 54 $ R In the presence of excess tryptophan, a repressor protein binds the operator of the trp operon and prevents the operon from being transcribed. In the absence of lactose, the lacR repressor protein binds the lac operon. F4 Positive gene regulation In the presence of the sugar arabinose, an activator protein binds the promoter of the genes responsible for processing arabinose and induces their transcription. In the presence of iron, the dtxR repressor protein binds DNA, and the gene that encodes for the diphtheria toxin is not expressed. % 5 In the presence of lactose and low glucose, the lac operon expressed 20-fold higher than in the absence of lactose. T F5 < 6 MacBook Air MA F6 Answer Bank & 7 F7 Y U * 8 DII F8 Negative gene regulation 1 ( 9 F9 O ) - C J F10 | ! LICarrow_forwardpls help me to do these my activity and answer properlyarrow_forward
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