Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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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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E30. 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…
Chapter 17 Solutions
Campbell Biology: Custom 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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- The 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_forwardpls help me to do these my activity and answer properlyarrow_forward
- Pls help ASAParrow_forwardQ1 There are similarities and differences during regulation of gene expression in both prokaryotes and eukaryotes. Promoters, transcription factors and RNA polymerase are essential elements in transcription but their properties and function may differ. b) Hypothesize the transcription of eukaryotic genes using prokaryotic promoter with further explanation.arrow_forwardhelp please !!!! thank you in advancearrow_forward
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