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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Textbook Question
Chapter 18, Problem 4IQ
Label the components of the following diagram that illustrates how enhancers, activators, mediator proteins, and transcription factors facilitate the formation of a transcription initiation complex.
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Below is a model of a signal transduction pathway that results in the transcribing of mRNA:
Receptor protein
Transcription factor
Phosphorylation
cascade
DNA
mRNA
What is the best description of what would happen if the phosphorylation cascade resulted in a phosphate being attached to the transcription factor?
O mRN would not stop being transcribed from the DNA.
O The phosphorylation cascade would continue to release excess phosphates.
O mRNA would stop being translated from the DNA.
O Receptor proteins would not bind to the signaling hormone.
Briefly describe the significance of regulatory factors in transcription process. Why the promoter is called an essential regulatory element.
Examine Figure 17.7. What would be the effect on transcription if a mutation occurred in the gene that encodes GAL3, so that no functional GAL3 was produced?
Chapter 18 Solutions
Study Guide for Campbell Biology
Ch. 18 - In the following diagram of the lac operon, an...Ch. 18 - a. Repressible enzymes usually function in _____...Ch. 18 - a. Give an example of highly methylated and...Ch. 18 - Label the components of the following diagram that...Ch. 18 - a. How is the process of alternate RNA splicing...Ch. 18 - a. Describe how miRNAs regulate gene expression....Ch. 18 - a. What is the difference between determination...Ch. 18 - What type of evidence established that Bicoid...Ch. 18 - a. List three genetic changes that can convert a...Ch. 18 - Complete the following concept map to help you...
Ch. 18 - Fill in the following table to help you organize...Ch. 18 - Prob. 3SYKCh. 18 - Prob. 1TYKCh. 18 - Prob. 2TYKCh. 18 - Prob. 3TYKCh. 18 - Prob. 4TYKCh. 18 - Prob. 5TYKCh. 18 - DNA methylation of cytosine bases a. initiates the...Ch. 18 - Which of the following is not true of enhancers?...Ch. 18 - Prob. 8TYKCh. 18 - A eukaryotic gene typically has all of the...Ch. 18 - Prob. 10TYKCh. 18 - Prob. 11TYKCh. 18 - Which of the following statements explains why a...Ch. 18 - Prob. 13TYKCh. 18 - Prob. 14TYKCh. 18 - Prob. 15TYKCh. 18 - Prob. 16TYKCh. 18 - What would be the fate of a Drosophila larva that...Ch. 18 - Prob. 18TYKCh. 18 - Prob. 19TYKCh. 18 - Prob. 20TYKCh. 18 - Prob. 21TYKCh. 18 - Prob. 22TYKCh. 18 - Prob. 23TYKCh. 18 - Which of the following would most likely account...
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- Briefly name and explain five mechanisms by which transcription factors activate transcription, with specific reference to targets in the basal transcription complexarrow_forwardDescribe three ways that the function of a regulatory transcription factor can be modulated.arrow_forwarddescribe the 4 types of suppressors inducer, repressor, promoter, and operator.arrow_forward
- Enhancers contain binding sites for transcription factors that regulate transcription. are activators that act across insulator barriers. contain binding sites for the basal transcription apparatus. are necessary for transcription, but are not involved in regulating transcription.arrow_forwardWhat is the role of general transcription factors? GTFs bind to enhancers or silencers and regulate transcription GTFs bind to the core promoter and allow transcriptional initiation GTFs are cis-acting regulatory sequences GTFs regulate the length of the mRNA GTFs are part of the RNA polymerase II holoenzyme, and control transcription initiationarrow_forwardCompare the structures and functions of transcriptionalactivators and repressors.arrow_forward
- This diagram shows a double-stranded section of DNA. The arrow indicates location and strand of the transcription start site. The direction of transcription is also indicated. In which box would you find a 5’TATAA \3’ promoter sequence that would be used for initiating transcription at the start site shown? a) Box A b) Box B c) Box C d) Box Darrow_forwardDiscuss how the expression of a protein can be regulated post transcription in eukaryotic cells through, using the following key terms: Degradation of mRNA (two ways) Blocking translation Degradation of the proteinarrow_forwardDescribe how a regulatory transcription factor binds to a regulatory element.arrow_forward
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