Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 14, Problem 3TY
Transcription factors that bind to DNA and stimulate transcription are
- a. repressors.
- b. small effector molecules.
- c. activators.
- d. promoters.
- e. operators.
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Is each of the following statements true or false?
A. An enhancer is a type of regulatory element.
B. A core promoter is a type of regulatory element.
C. Regulatory transcription factors bind to regulatory elements.
D. An enhancer may cause the down regulation of transcription.
Eukaryotic cells have multiple complex mechanisms for the regulation of gene expression, but a regulatory mechanism they rarely (if ever) use is
a. operons.
b. regulatory proteins.
c. transcriptional factors.
d. promoters.
Transcriptional regulation often involves a regulatory protein that binds to a segment of DNA and a small effector molecule that binds to the regulatory protein. Do each of the following terms apply to a regulatory protein, a segment of DNA, or a small effector molecule?
A. Repressor
B. Inducer
C. Operator site
D. Corepressor
E. Activator
F. Attenuator
G. Inhibitor
Chapter 14 Solutions
Biology
Ch. 14.1 - Prob. 1CCCh. 14.2 - Which genes are under the control of the lac...Ch. 14.2 - With regard to regulatory proteins and small...Ch. 14.2 - What were the key observations made by Jacob,...Ch. 14.2 - CoreSKILL What was the eventual hypothesis...Ch. 14.2 - Prob. 3EQCh. 14.2 - Core Skill: Connections Look back at Fig 9.12....Ch. 14.2 - What are the advantages of having both an...Ch. 14.2 - Prob. 2CSCh. 14.3 - Prob. 1CC
Ch. 14.4 - What are the two opposing effects that histone...Ch. 14.4 - Prob. 1CSCh. 14.5 - Prob. 1CCCh. 14.5 - Prob. 2CCCh. 14 - Prob. 1TYCh. 14 - Prob. 2TYCh. 14 - Transcription factors that bind to DNA and...Ch. 14 - Prob. 4TYCh. 14 - For the lac operon, what would be the expected...Ch. 14 - Prob. 6TYCh. 14 - The trp operon is considered _____ blank operon...Ch. 14 - Prob. 8TYCh. 14 - Prob. 9TYCh. 14 - _____ blank refers to the process that allows a...Ch. 14 - Prob. 1CQCh. 14 - Transcriptional regulation often involves a...Ch. 14 - Prob. 3CQCh. 14 - Discuss the advantages and disadvantages of...Ch. 14 - Discuss the advantages and disadvantages of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Define the following terms: a. promoter b. consensus sequence c. operon d. chromatin-remodeling complex e. general transcription factorsarrow_forwardTwo different types of gene regulatory elements are DNA sequence and protein-based. Which of the following describes them, respectively? a. one blocks translation, the other blocks transcription b. The first is an aporepressor, the second is a promoter c. The first is an enhancer, the second is a repressor d. The first is a activator, the second is a an attenuator e. one is an activist, the other is a protestorarrow_forwardWhich of the following best explains how the prokaryotic expression of a metabolic protein can be regulated when the protein is already present at a high concentration? a.Repressor proteins can be activated and bind to regulatory sequences to block transcription. b.Regulatory proteins can be inactivated to increase gene expression. c.Transcription factors can bind to regulatory sequences to increase RNA polymerase binding. d.Histone modification can prevent transcription of the gene.arrow_forward
- Which of the following statements about gene regulation is false? a. An operon contains DNA sequences that regulates its own expression. b. The operator region can only be bound by an activator protein. c. Transcription factors can affect the binding of RNA polymerase to the promoter. d. A repressor is a transcription factor that hinders gene transcription.arrow_forwardPositive regulators are called: A. Repressors B. Activators C. Enhancers D. None of the abovearrow_forwardWhich of the following is not an example of constitutively expressed gene? a. genes for cell division and growth b. genes involved in DNA repair c. genes for cellular respiration d. genes that function in ATP synthesisarrow_forward
- Regulatory transcription factors can be modulated by a. the binding of small effector molecules. b. protein-protein interactions. c. covalent modifications. d. all of the above.arrow_forwardGene expression regulation by methylation of the cytosines in a promoter would be considered : Select one: a. Translational regulation. b. Transcriptional regulation. c. Posttranscriptional regulation. d. Posttranslational regulation.arrow_forwardTranslational control of gene expression occurs within thea. nucleus.b. cytoplasm.c. nucleolus.d. mitochondria.arrow_forward
- 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 chromosomearrow_forwardHow does reverse methylation affect gene expression? Select one: o a. The gene is turned off, but still expresses a protein product. b. The gene becomes transcriptionally silent. c. There is no effect on the gene. d. The gene is hyperactive resulting in a gain of function. e. The gene expresses the wrong protein. Clear my choice How do microRNAs regulate epigenetic mechanisms during development? Select one: o a. MicroRNAs function as gene repressors b. You only find microRNAS in epigenetic and cancer cells c. MicroRNAs function as gene activators d. MicroRNAS regulate methylation on the DNA sequences of embryos e. Researchers find that when microRNAs are present the effects of epigenetic modifications are 50% greater Clear my choicearrow_forwardCombinatorial 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.arrow_forward
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