Which 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.  Q: Which of the following is true of transcription factors? A)The same transcription factors are found… A: Transcription factors are defined as the protein responsible for controlling the transcription rate… Q: Can one transcription factor sometimes act as a repressor and sometimes act as an activator? a. Yes,… A: Transcription factors are proteins that bind to neighbouring DNA and help switch particular genes… Q: Transcriptional repressor proteins (e.g., lac repressor), antisense RNA, and feedback inhibition are… A: The antisense RNA, transcriptional repressor proteins, and feedback inhibition are different… Q: We know that eukaryote gene regulation can occur at any point in the process of gene expression. (a)… A: Gene regulation can be exercised at DNA, mRNA or protein levels according to the environmental… Q: We know that eukaryote gene regulation can occur at any point in the process of gene expression.… A: Given: We know that eukaryote gene regulation can occur at any point in the process of gene… Q: If a mutation occurred in a control element sequence associated with a particular gene, which of the… A: Transcription is found in the nucleus. It makes RNA from template strand of DNA. Q: Two different types of gene regulatory elements are DNA sequence and protein-based. Which of the… A: Gene regulator A gene that code for protein which involves in the regulation of a gene or group of… Q: Which of the following best represents the central dogma of geneexpression?a. During transcription,… A: Deoxyribonucleic acid (DNA) is a double-stranded helical genetic material containing thousands of… Q: You are studying a new gene that is expressed within the adipose tissue of humans during the… A: "Genes" can store genetic information in the form of DNA, which may be converted into functional… Q: A scientist identifies a potential transcription regulation site 300bp downstream of a gene and… A: Introduction Proteins are the key biomolecule in the biological system, any important physiological… Q: Sickle cell anemia is a disease caused by a mutation at the genotypic level. A person with two… A: sickel cell anemia is a type of anemia in which the red blood cells are abnormally shaped and… Q: Discuss factors that might influence the activity of DNA-binding proteins (transcription factors)… A: Transcription is that the process where a gene's DNA sequence is copied (transcribed) into an RNA… Q: Suppose that you have a cancer cell line X which was treated with a drug Y to increase the… A: Two types of cell normally present in our body that is the TSG, tumor suppressor gene due to… Q: Suppose that you have a cancer cell line X which was treated with a drug Y to increase the… A: In case of cancer, the activity of the hemostatic system components triggers tumor growth and… Q: A strain of bacteria possesses a temperature-sensitive mutation in the gene that encodes the rho… A: Transcription is the transcribing DNA into mRNA with the help of RNA polymerase. Rho factor are… Q: A strain of bacteria possesses a temperature-sensitive mutation in the gene that encodes the rho… A: A):-The rho protein is only involved in transcription termination, it should not affect… Q: Suppose that you have a cancer cell line X which was treated with drug Y to increase the expression… A: In our body, the gene is called the tumor suppressor gene TSG, which suppresses the tumor activity… Q: Which of the following will lead to a decrease in transcription of a gene? O A. Increase in histone… A: Decrease in DNA methyltransferases. Q: Compare and contrast regulation of gene expression in prokaryotes vs. eukaryotes. A: Prokaryotic organisms are single celled organisms that lack a cell nucleus,and their DNA therefore… Q: Suppose that you have cancer cell line X was treated with drug Y to increase the expression levels… A: Given, X is a cancer cell line which was treated with a drug Y. It resulted in the increase of… Q: You are curious to identify the region of the gene X sequence that serves as an enhancer for gene… A: Nascent RNA (ribonucleic acid) sequencing analysis is a tool for enhancer identification. Some… Q: When bacteria are grown in the presence of high concentrations of tryptophan: O A. A repressor is… A: Tryptophan is defined as an alpha-amino acid utilized in the biosynthesis of proteins and cannot be… Q: If a gene sequence is more tightly coiled around histones, then which of the following is the most… A: When DNA or gene sequence is strongly attached to histones, however, transcription factors and RNA… Q: In the trp operon, what happens to the trp repressor in the absence of tryptophan? a. It binds to… A: An operon refers to a group of functionally-associated genes that are controlled by a shared… Q: Which of the following DNA elements or proteins would you expect to find only in some cells in a… A: Enhancers are defined as cis-acting DNA sequences that can increase the transcription of genes.… Q: Which of the following is an example of post-transcriptionalcontrol of gene expression?(A) the… A: Post-transcriptional control of gene expression is otherwise known as a post-transcriptional… Q: Which of the following is an example of post-transcriptionalcontrol of gene expression?(A) the… A: Post-transcriptional regulation is the gene expression control at the biological process common in… Q: When would a ribosome bind to a promoter sequence? A) When the ribosome is translating the DNA… A: Promoter is a sequence of DNA thats helps in transcription initiation. Ribosomes are molecules that… Q: What is the difference between the core promoter and the regulatory promoter?a. Only the core… A: Introduction Usually, in prokaryotes, the promoter describes all the sequences including core and… Q: What is the difference between the core promoter and the regulatory promoter? a. Only the core… A: Answer: Introduction: a promoter is a sequence of DNA to which proteins bind to start transcription… Q: Suppose that you have a cancer cell line X which was treated with a drug Y to increase the… A: A tumor suppressor gene and oncogene are present in the cell, whenever an oncogene gains its… Q: When would a ribosome bind to a promoter sequence? A) It wouldn't. A promoter is a DNA sequence, and… A: Ribosomes bind to mRNA during the process of translation. Initiation of protein synthesis involves… Q: In order to manufacture insulin for patients with diabetes, scientists create recombinant DNA by… A: Recombinant DNA technology is the method which scientists used to insert human gene into bacterial… Q: Consider a gene sequence whose promoter has acquired a mutation. Although this is a problem, this… A: Gene expression in organisms is an essential step for their metabolic activities. Often certain… Q: a. From the graph describe briefly, Hes1 gene regulation in normal and mutant cells in presence or… A: B.Sirtuin 1 (SIRT1) which is encoded by the SIRT1 gene is the most conserved mammalian… Q: Why is regulating transcription the main way that cells control gene expression? A. Because… A: Transcription is the process in which RNA is synthesized with the help of RNA polymerase enzyme. RNA… Q: Gene expression in bacteria is controlled by the operon model. a) Why is the operon model… A: BASIC INFORMATION OPERON MODEL This model of gene regulation was put forward by Francis Jacob and… Q: A promoter is, choose the correct answer... a. the binding site for the ribosome on a messenger RNA… A: Transcription is a process in which a transcript ( RNA ) is formed. It takes place by the common… Q: Compare the control of gene regulation in eukaryotes and prokaryotes at the level of initiation of… A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for… Q: Which of the following statements is correct about eukaryotic gene expression?a. mRNAs must have… A: Transcription is a process in which one strand of DNA known as template strand is known as converted… Q: Suppose that a consensus sequence in the regulatory promoter of a eukaryotic gene that encodes… A: Transcription is a process through which the template strand of the DNA gets transcribed into mRNA… Q: The regulatory gene that codes for the tryptophan repressor is not tightly linked to the trp operon.… A: Bacteria such as E.coli need amino acids to survive and such as amino acid Tryptophan. If tryptophan… Q: Briefly describe an experiment you could perform to isolate ER-associated ribosomes and test if… A: Ribosomes are cell organelles that are the site of important cellular processes such as translation… Q: Which of the following is true regarding General transcription factors? a. Act at every gene for a… A: Transcription factors are proteins which binds to DNA, resulting in regulation of gene expression… Q: In the treatment of cancer, the basis for many types of chemotherapyand radiation therapy is that… A: The tumor is irregular growth of tissue. It is the first stage of tumor development. The… Q: In the treatment of cancer, the basis for many types of chemotherapyand radiation therapy is that… A: Introduction: Cancer can begin anyplace in the human body, which is comprised of trillions of cells.… Q: A scientist compares the promoter regions of two genes. Gene A’s core promoter plus proximal… A: Promoters are nucleotide sequences location upstream of a gene. They serve as sites where proteins… Q: Transcriptional activation of eukaryotic genes involves which of the following events? a. Changes in… A: Nucleosome is the packaging unit in eukaryotes. It is a fundamental subunit of chromatin.… Q: Which molecules recognize the TATA box before RNA polymerase binds to the promoter region?… A: The TATA box, also known as the Goldberg–Hogness box, is a DNA sequence present in the central… Q: Can one transcription factor sometimes act as a repressor and sometimes act as an activator? O a.… A: We are authorized to answer only one question at a time, since you have not mentioned which question… Knowledge Booster Learn more about 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. 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? 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. 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 SEE MORE QUESTIONS Recommended textbooks for you Biology (MindTap Course List) ISBN:9781337392938 Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg Publisher:Cengage Learning Biology (MindTap Course List) ISBN:9781337392938 Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg Publisher:Cengage Learning |
Which of the following best explains how the prokaryotic expression of a metabolic protein can be
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