Homework Answers
A. Regulatory protein B and C are functioning as the transcriptional activator. This inference can be drawn from experiment no. 3 and 4 when each protein is used individually.
B. Regulatory protein A is a transcriptional repressor. This inference is from experiment no. 2.
C. A binds more strongly than B because in experiment no. 5 when both A and B were added together, the activator effect of protein B was lost. Thus, we can conclude that protein A binds more strongly to site 1 compared to protein B.
D. Protein A is bound to site 1 and protein B is bound to site 2.
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8. (4pts) You are interested in the regulation of a gene that regulates cartilage production in...
3) Gene Control in Bacteria - Transcription Activators and Repressors You are interested in examining the...
3) Gene Control in Bacteria - Transcription Activators and Repressors You are interested in examining the regulation of the gene that encodes an enzyme, Tre- ase, important in metabolizing trehalose into glucose in bacteria. Trehalose is a disaccharide formed of two glucose units. It is known that two DNA-binding proteins, TreA and TreB, are important for binding to the promoter of the Tre-ase gene and are involved in regulating the transcription of the Tre-ase gene: TreA binds to the "A"...
3. This is a schematic of a very simple pattern of gene expression. Yes means the...
3. This is a schematic of a very simple pattern of gene expression. Yes means the protein is present and can bind the promoter. No means the protein is absent. Transcription factors are proteins that help regulate transcription by binding DNA Activators are transcription factors that help transcription. For example, they bend the promoter and make it accessible to RNA polymerase. Repressors are transcription factors that inhibit transcription. For example, they might bind the promoter and stop the RNA polymerase...
the answer I gave was wrong Which of the following statements about gene regulation concerning operons...
the answer I gave was wrong
Which of the following statements about gene regulation concerning operons is INCORRECT? A regulator gene has its own promoter and is transcribed into an independent mRNA. For an operon under negative repressible control, a correpressor is required for the repressor to bind to the operator. Presence of operons where genes of related functions are clustered is common in bacteria but not in eukaryotes. For a gene under positive repressible control, the normal state is...
1. this proteins is responsible for increasing or decreasing supercoiling of DNA A. Helicase B. DNA...
1. this proteins is responsible for increasing or decreasing supercoiling of DNA A. Helicase B. DNA Polymerase C. Topoisomerase D. RNA Polymerase E. DNA ligase 2. a gene is best defined as A. A segment of DNA that contains inherited information that defines the structure of a protein or RNA B. thee nucleotides that code for an amino acid C. a translated unit of DNA D. a sequence of nucleotides in RNA that codes for a functional product 3. This...
I need help with question 24. The answer is D. Thanks for any help in advance....
I need help with question 24. The answer is D. Thanks
for any help in advance.
pie A) the stimulation of translation by initiation factors. B) a post-transcriptional mechanism to regulate mRNA C) transcriptional control of gene expression. (D) post-translational control that activates certain proteins. E) a eukaryotic equivalent of prokaryotic promoter functioning. 24) If you were to observe the activity of methylated DNA, you would expect it to Al be unwinding in preparation for protein synthesis. B) induce protein...
Which is the factor(s) involved in the regulation of gene activity? Select one: a. Transcriptional repressor/activator...
Which is the factor(s) involved in the regulation of gene activity? Select one: a. Transcriptional repressor/activator proteins, which bind to the operator/enhancer sequence regions. b. SAM binding to a riboswitch mRNA. c. Alterations in mRNA conformations by SAM during the transcription. d. All of these. e. None of these.
Question 1 Match the term with the best definition or description; most topics relate to the...
Question 1 Match the term with the best definition or description; most topics relate to the regulation of gene expression. General type of protein which will increase transcription rates when it attaches to a site A. Factor connected to a particular gene - B. Co-repressor C. Enhancer D. Promoter E. Structural F. Intron G. Activator H. Operator I. Basal transcription J. Glucocorticoid receptor K. Sigma factor L. Mediator M. Inducer N. TATA box O. Repressor The rates of mRNA produced...
Please include: RNA pol II, TBP, TFIIB, TFIID, TCF4. Mediator, BRE, TATA, Inr, DPE, E box...
Please include:
RNA pol II, TBP, TFIIB, TFIID, TCF4. Mediator, BRE, TATA, Inr, DPE,
E box
Question 5: (5 marks) Mediator is a protein complex that is able to act as a bridge between transcriptional activators and the TFIID-dependent RNA Pol II machinery. Draw what you would expect the promoter region to look like with Mediator acting at the promoter of a gene with an E-box 3000bp upstream of the transcriptional start site, which requires TCF4 for activation of transcription....
A) An Operon is:? 1- A gene that affect another gene transcription. 2. A gene coding...
A) An Operon is:? 1- A gene that affect another gene transcription. 2. A gene coding for a metabolic pathway. 3. A protein that blockgene expression. 4. A set of genes under the control of one promoter. B )- In bacteria the Lac Operon genes code for proteins that break down.? 1- Arabinose 2- Lactose 3- Galactose 4- Glucose C )mRNA processing involves removal of .......? 1- Introns 2- The poly-A tail 3- The 5' cap 4- Exons D )...
I need help with question 23. The answer is C. Thanks for any help in advance....
I need help with question 23. The answer is C. Thanks
for any help in advance.
JUTTU TIL II Hing. UNA methylation, and histone acetylation are all ex Alkaryotypes B) translocation. 6) genetic mutation. Depigenetic phenomena. E) chromosomal rearrangements. 23) The functioning of enhancers is an example of A) the stimulation of translation by initiation factors. B) a post-transcriptional mechanism to regulate mRNA. C) transcriptional control of gene expression. Dpost-translational control that activates certain proteins. E) a eukaryotic equivalent of...
3) Gene Control in Bacteria - Transcription Activators and Repressors You are interested in examining the regulation of the gene that encodes an enzyme, Tre- ase, important in metabolizing trehalose into glucose in bacteria. Trehalose is a disaccharide formed of two glucose units. It is known that two DNA-binding proteins, TreA and TreB, are important for binding to the promoter of the Tre-ase gene and are involved in regulating the transcription of the Tre-ase gene: TreA binds to the "A"...
3. This is a schematic of a very simple pattern of gene expression. Yes means the protein is present and can bind the promoter. No means the protein is absent. Transcription factors are proteins that help regulate transcription by binding DNA Activators are transcription factors that help transcription. For example, they bend the promoter and make it accessible to RNA polymerase. Repressors are transcription factors that inhibit transcription. For example, they might bind the promoter and stop the RNA polymerase...
the answer I gave was wrong
Which of the following statements about gene regulation concerning operons is INCORRECT? A regulator gene has its own promoter and is transcribed into an independent mRNA. For an operon under negative repressible control, a correpressor is required for the repressor to bind to the operator. Presence of operons where genes of related functions are clustered is common in bacteria but not in eukaryotes. For a gene under positive repressible control, the normal state is...
I need help with question 24. The answer is D. Thanks
for any help in advance.
pie A) the stimulation of translation by initiation factors. B) a post-transcriptional mechanism to regulate mRNA C) transcriptional control of gene expression. (D) post-translational control that activates certain proteins. E) a eukaryotic equivalent of prokaryotic promoter functioning. 24) If you were to observe the activity of methylated DNA, you would expect it to Al be unwinding in preparation for protein synthesis. B) induce protein...
Question 1 Match the term with the best definition or description; most topics relate to the regulation of gene expression. General type of protein which will increase transcription rates when it attaches to a site A. Factor connected to a particular gene - B. Co-repressor C. Enhancer D. Promoter E. Structural F. Intron G. Activator H. Operator I. Basal transcription J. Glucocorticoid receptor K. Sigma factor L. Mediator M. Inducer N. TATA box O. Repressor The rates of mRNA produced...
Please include:
RNA pol II, TBP, TFIIB, TFIID, TCF4. Mediator, BRE, TATA, Inr, DPE,
E box
Question 5: (5 marks) Mediator is a protein complex that is able to act as a bridge between transcriptional activators and the TFIID-dependent RNA Pol II machinery. Draw what you would expect the promoter region to look like with Mediator acting at the promoter of a gene with an E-box 3000bp upstream of the transcriptional start site, which requires TCF4 for activation of transcription....
I need help with question 23. The answer is C. Thanks
for any help in advance.
JUTTU TIL II Hing. UNA methylation, and histone acetylation are all ex Alkaryotypes B) translocation. 6) genetic mutation. Depigenetic phenomena. E) chromosomal rearrangements. 23) The functioning of enhancers is an example of A) the stimulation of translation by initiation factors. B) a post-transcriptional mechanism to regulate mRNA. C) transcriptional control of gene expression. Dpost-translational control that activates certain proteins. E) a eukaryotic equivalent of...
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