In gene regulation, what is the difference between Positive/Negative/ Inducible/ Repressible when it comes to gene...
In gene regulation, what is the difference between Positive/Negative/ Inducible/ Repressible when it comes to gene expression and the signal?
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In gene regulation, what is the difference between
Positive/Negative/ Inducible/ Repressible when it comes to gene...
Give two examples about inducible/repressible gene expression. Explain the function of the genes, the mechanism of...
Give two examples about inducible/repressible gene expression. Explain the function of the genes, the mechanism of the regulation, and why it is important to have a way to control the level of gene expression.
I am pretty sure that this is negative repressible. Below is an analogy/metaphor about prokaryotic gene...
I am pretty sure that this is negative repressible.
Below is an analogy/metaphor about prokaryotic gene regulation. Please label the type appropriately and then explain why that type of regulation matches with that analogy. Possible types of prokaryotic gene regulation: Positive Inducible, Positive Repressible, Negative Inducible or Negative Repressible Analogy: I am trying to make my lecture about transcription. This is working well because there is no one at home where I am recording my PowerPoint. However, Dr. Corn is...
1) The lac operon is… a) Positive repressible b) Both negative inducible and positive repressible c)...
1) The lac operon is… a) Positive repressible b) Both negative inducible and positive repressible c) Positive inducible d) Negative inducible 2) An activator regulatory protein… a) Is involved in negative regulatory control b) Is a cis acting regulatory element c) Recruits RNA polymerase to the promoter d) Prevents RNA polymerase from binding the promoter 3) For the lac operon, the presence of the substrate (lactose) activates the repressor. True or False? a) true b) false 4) cAMP… a) Activates...
QUESTION 8 The following situations (1-4) involve different types of gene regulation in prokaryotic cells as shown. OFF...
QUESTION 8 The following situations (1-4) involve different types of gene regulation in prokaryotic cells as shown. OFF and ON reter to whether the gene is transcribed or not. Draw clearly-labelled regulatory proteins and effector molecules in each diagram to explain how the regulation works in each case. The first one has been done for you as an example a) (6 marks) Type of Regulation Regulatory protein effector molecule 1 DNA X negative inducible OFF ON 2 negative repressible DNA...
1. Describe how bacteria regulate genes through operons. 2. What is the difference between a repressible...
1. Describe how bacteria regulate genes through operons. 2. What is the difference between a repressible and inducible genetic system? 3. Expression of the Lac operon is under the controls of (1) the Lacl repressor and (2) CAP. Consider each of the following conditions and determine which factors will be acting on the operon. Predict the rate of gene expression. Conditions Lac Operon fon" or "off" CAP present" or "absent" at Lac Operon Predict the rate of gene expression (none,...
Complete this quiz after watching the Gene regulation chapter 14 1 and 2 videos. We cover...
Complete this quiz after watching the Gene regulation chapter 14 1 and 2 videos. We cover only Lac operon. Question 2 1 pts Which statement best describes the lac operon in E.coli? o Constitutively expressed genes ( always "on") O Negative transcriptional control of inducible genes ( turned "off" until turned "on") O Positive transcriptional control of repressible genes ("on" until tuned "off") - Previous Next →
A particular gene (call it xyz) is, like the lac operon, regulated both by Negative and...
A particular gene (call it xyz) is, like the lac operon, regulated both by Negative and by Positive control. However, unlike the lac operon, xyz's Negative control system is repressible. We'll call the repressor signal "signal 1." The Positive control system of xyz, like that of lac, is inducible. We'll call the inducer "signal 2." I want you to sketch the xyz gene in the presence and absence of each signal, as follows, and then determine whether the xyz gene...
Gene Regulation Describe the regulation of the lac operon in E. coli. a. the structure of...
Gene Regulation Describe the regulation of the lac operon in E. coli. a. the structure of lac operon in E.coli. b. Role of CAP and cAMP the activator binding site c. Role of Lac Repressor and Operator and Inducer d. Role of Looping e. Effect of mutations f. Recessive v dominant mutations g. Complementing v noncomplementing mutations. Describe the regulation of the trp operon in E. coli. Describe at least three kinds of molecular switches involved in gene regulation. What...
1. Describe in detail how both positive and negative regulation control expression of the lac operon...
1. Describe in detail how both positive and negative regulation control expression of the lac operon in bacteria. In doing this, also convey understanding of how and why expression of this operon is controlled two ways (positive and negative). Also answer, what are the energetic benefits to the cell of operon regulation? 2. What is horizontal gene transfer? Describe in detail the three mechanisms of horizontal gene transfer. What are the evolutionary advantages and costs of horizontal gene transfer. I...
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...
I am pretty sure that this is negative repressible.
Below is an analogy/metaphor about prokaryotic gene regulation. Please label the type appropriately and then explain why that type of regulation matches with that analogy. Possible types of prokaryotic gene regulation: Positive Inducible, Positive Repressible, Negative Inducible or Negative Repressible Analogy: I am trying to make my lecture about transcription. This is working well because there is no one at home where I am recording my PowerPoint. However, Dr. Corn is...
QUESTION 8 The following situations (1-4) involve different types of gene regulation in prokaryotic cells as shown. OFF and ON reter to whether the gene is transcribed or not. Draw clearly-labelled regulatory proteins and effector molecules in each diagram to explain how the regulation works in each case. The first one has been done for you as an example a) (6 marks) Type of Regulation Regulatory protein effector molecule 1 DNA X negative inducible OFF ON 2 negative repressible DNA...
1. Describe how bacteria regulate genes through operons. 2. What is the difference between a repressible and inducible genetic system? 3. Expression of the Lac operon is under the controls of (1) the Lacl repressor and (2) CAP. Consider each of the following conditions and determine which factors will be acting on the operon. Predict the rate of gene expression. Conditions Lac Operon fon" or "off" CAP present" or "absent" at Lac Operon Predict the rate of gene expression (none,...
Complete this quiz after watching the Gene regulation chapter 14 1 and 2 videos. We cover only Lac operon. Question 2 1 pts Which statement best describes the lac operon in E.coli? o Constitutively expressed genes ( always "on") O Negative transcriptional control of inducible genes ( turned "off" until turned "on") O Positive transcriptional control of repressible genes ("on" until tuned "off") - Previous Next →
1. Describe in detail how both positive and negative regulation control expression of the lac operon in bacteria. In doing this, also convey understanding of how and why expression of this operon is controlled two ways (positive and negative). Also answer, what are the energetic benefits to the cell of operon regulation? 2. What is horizontal gene transfer? Describe in detail the three mechanisms of horizontal gene transfer. What are the evolutionary advantages and costs of horizontal gene transfer. I...
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...
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