An enhancer: A. is a consensus sequence in DNA located where RNA polymerase first binds. B. may be located in various places in different genes. C. may be on either strand of DNA in the region of the gene. D. functions by binding RNA polymerase. E. stimulates transcription in both prokaryotes and eukaryotes.

An enhancer: A. is a consensus sequence in DNA located where RNA polymerase first binds. B. may be located in various places in different genes. C. may be on either strand of DNA in the region of the gene. D. functions by binding RNA polymerase. E. stimulates transcription in both prokaryotes and eukaryotes.

Name: Transcription of eukaryotic genes requires the presence of a promoter
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Description: Transcription of eukaryotic genes requires the presence of a promoter and usually the presence of enhancers. An enhancer: A. is a consensus sequence in DNA located where RNA polymerase first binds.B. may be located in various places in different gene

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter14: Gene Regulation

Section: Chapter Questions

Problem 8TYU: Through alternative splicing, eukaryotes (a) reinforce gene inactivation (b) prevent transcription...

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Through alternative splicing, eukaryotes (a) reinforce gene inactivation (b) prevent transcription of heterochromatin (c) produce related but different proteins in different tissues (d) amplify genes to meet the requirement of high levels of a gene product (e) bind transcription factors to enhancers to activate transcription
Regarding transcriptional promoter sites, which of the following statements are true? Select one or more than one: a)They are located in the gene (DNA) whose information will be transcribed b)They are found at the 3 'end of the gene that will be transcribed c)Some of them are called 'TATA box' d)They are found in the DNA, 'upstream' of the gene to be transcribed. e)They are proteins of the cytoplasm
For each statement about gene expression mechanisms, choose the correct end to the sentence. For each gene, the template strand for transcription is determined by…. The direction of translation is determined by…… The tissue-specificity of protein production is determined by…. choices: a. location of the start codon b. location of the promoter c. direction of polymerization by RNA polymerase d. none of these e. direction of movement of ribosomes f. overall orientation of the chromosome
Your investors are concerned that the GasP protein might not be sufficiently produced under normal laboratory conditions. They suggest controlling the transcription of the gasP gene using a chemical that will “trigger” its transcription. a. What type of promoter could be used? b. What chemical will you use to control transcription? c. How does this method of control work?
If a mutation occurred in a control element sequence associated with a particular gene, which of the following would be a likely consequence of this? A. This mutation is not likely to affect the expression of the associated gene, because RNA polymerase does not bind to control elements. B. This will likely affect the expression of the associated gene because it will loosen the coiling of chromatin at this site. C. The expression of the associated gene will be affected because this change will result in a nonsense mutation. D. This mutation is not likely to affect the expression of the associated gene, since control elements are noncoding sequences. E. The associated gene's expression would likely be affected, since this mutation would change the ability of at least one transcription factor to bind.
Transcriptional repressor proteins (e.g., lac repressor), antisense RNA, and feedback inhibition are three different mechanisms that turn off the expression of genes and gene products. Which of these three mechanisms will be most effective in each of the following situations? A. Shutting down the synthesis of a polypeptide B. Shutting down the synthesis of mRNA C. Shutting off the function of a protein For your answers to parts A–C that list more than one mechanism, which mechanism will be the fastest or the most efficient?
Through alternative splicing, eukaryotes (a) reinforce gene inactivation (b) prevent transcription of heterochromatin (c) produce related but different proteins in different tissues (d) amplify genes to meet the requirement of high levels of a gene product (e) bind transcription factors to enhancers toactivate transcription
What strategy does a genetically encoded calcium indicator look like to allow fluorescence imaging of only one cell type in an acute slice of the brain? A.The use of fluorescent protein expression inhibitors in other cells B.The injection of a recombinant virus causing the death of other cells C.The use of a promoter specific to these cells D.Activation of membrane receptors specific to these cells
f you made a change in the promoter sequence in the DNA that inactivates the promoter, what would happen at the RNA level? A-Nothing, because the RNA would be made as usual B-Transcription factors would be unable to bind and the RNA polymerase would not be recruited to the DNA, so no RNA would be made. C-The mutation of the DNA would be carried through to the RNA sequence. D-The DNA helicase would not be able to recognize and bind the DNA, so the RNA would not be made. EXPLAIN WHY THE ANSWER YOU CHOOSE IS CORRECT
Mutations that occur at the end of a gene may alter the sequence of the gene and prevent transcriptional termination. A. What types of mutations would prevent ρ-independent termination? B. What types of mutations would prevent ρ-dependent termination? C. If a mutation prevented transcriptional termination at the end of a gene, where would gene transcription end? Or would it end?
a) What is a gene promoter? b) What proteins bind to a promoter? c) What do those proteins do to control gene expression?
Combinatorial control refers to the phenomenon that a. transcription factors always combine with each other when regulating genes. b. the combination of many factors determines the expression of any given gene. c. small effector molecules and regulatory transcription factors are found in many different combinations. d. genes and regulatory transcription factors must combine with each other during gene regulation.