The E. coli chromosome contains an operon with the following components: an operator, a promoter, and...
The E. coli chromosome contains an operon with the following components: an operator, a promoter, and 4 structural genes identified as A,B,C, and D. Diagram this operon in the following manners: A. Inducible, positive regulation. B. Repressible, negative regulation.
Homework Answers
Add Answer to:
The E. coli chromosome contains an operon with the following
components: an operator, a promoter, and...
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...
P OPERON What happens to transcription at the trp operon when 1. tryptophan levels are low? Why? ...
P OPERON What happens to transcription at the trp operon when 1. tryptophan levels are low? Why? 2. Illustrate it. Include: RNA repressors erase, repressors, and any other molecules needed to show how this worke. GENE TURNED ON -+ + +- Promoter OperatorStructural Genes 3. What happens to transcription at the trp operon when trypto 4. Illustrate it. Include: RNA polymerase, e, repressors and any other molecules needed to show the following GENE TURNED OFF Promoter Operator Structural Genes Circle...
The phoNY operon is located on a part of the bacterial chromosome in between genes C...
The phoNY operon is located on a part of the bacterial chromosome in between genes C and D. The DNA looks like: ...A B C -----D E F..... Click 5 Watson The dashed lines represent the structural genes (enzyme encoding) of the phone operon. Mutations that affect the regulation of the phoNY operon have been identified and mapped. Some of the regulatory mutations map near gene D and some map near gene A(asterisks mark approximate locations). No phoNY regulatory mutations...
Page < 2 > of 2 D. The trp operon would be expressed at high levels,...
Page < 2 > of 2 D. The trp operon would be expressed at high levels, comparable to its expression in the absence of trp 6. Based upon what you have learned about the E. coli trp operon, what could you say about expression of its structural genes in cells with large amounts of environmental trp, but expressing a mutant trp repressor that is unable to bind trp? A. The trp operon would be completely repressed due to the abundance...
expressed at high levels, comparable to its expression in the absence of trp 6. Based upon...
expressed at high levels, comparable to its expression in the absence of trp 6. Based upon what you have learned about the E. coli trp operon, what could you say about expression of its structural genes in cells with large amounts of environmental trp, but expressing a mutant trp repressor that is unable to bind trp? A. The trp operon would be completely repressed due to the abundance of trp B. The trp operon would be transcribed much less than...
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...
please help me with the question 15 to 18. Basic structure of an operon Note that...
please help me with the question 15 to 18.
Basic structure of an operon Note that the diagram below is one section of DNA master strend with some areas of DNA labeled in blocks The bracketed area illustrates the basic parts of an operon repressor gene promoter operator structural genes DNA 3 mRNA 5 - 3 repressor protein shown attached to operator #2 Repressor preten "Use purple to color in the repressor gene. The repressor gene codes for a repressor...
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...
Which of the following statements is correct concerning operon gene control? Positive control requires an activator...
Which of the following statements is correct concerning operon gene control? Positive control requires an activator protein to stimulate transcription of the structural genes within an operon. In negative control, a repressor protein inhibits or turns off transcription of the structural genes within the operon. An inducible operon normally is not transcribed. It requires an inducer molecule to stimulate transcription either by inactivating a repressor protein in a negative inducible operon or by stimulating the activator protein in a positive...
UT EID: D. 5 E. 6 13. For the E. coli strain containing the following alleles...
UT EID: D. 5 E. 6 13. For the E. coli strain containing the following alleles of the lac operon, expression of lacZ and lacY is inducible, constitutively on or permanently repressed. (erepressor; r cannot bind operator: osoperator, o cannot bind repressor, lac are LOF mutations) A. lacZ is inducible, lacY is constitutively on. B. lacZ is constitutively on, lacY is inducible. C. lacZ is permanently repressed, lacY is constitutively on. D. lacZ is constitutively on, lacY is permanently repressed....
P OPERON What happens to transcription at the trp operon when 1. tryptophan levels are low? Why? 2. Illustrate it. Include: RNA repressors erase, repressors, and any other molecules needed to show how this worke. GENE TURNED ON -+ + +- Promoter OperatorStructural Genes 3. What happens to transcription at the trp operon when trypto 4. Illustrate it. Include: RNA polymerase, e, repressors and any other molecules needed to show the following GENE TURNED OFF Promoter Operator Structural Genes Circle...
The phoNY operon is located on a part of the bacterial chromosome in between genes C and D. The DNA looks like: ...A B C -----D E F..... Click 5 Watson The dashed lines represent the structural genes (enzyme encoding) of the phone operon. Mutations that affect the regulation of the phoNY operon have been identified and mapped. Some of the regulatory mutations map near gene D and some map near gene A(asterisks mark approximate locations). No phoNY regulatory mutations...
Page < 2 > of 2 D. The trp operon would be expressed at high levels, comparable to its expression in the absence of trp 6. Based upon what you have learned about the E. coli trp operon, what could you say about expression of its structural genes in cells with large amounts of environmental trp, but expressing a mutant trp repressor that is unable to bind trp? A. The trp operon would be completely repressed due to the abundance...
expressed at high levels, comparable to its expression in the absence of trp 6. Based upon what you have learned about the E. coli trp operon, what could you say about expression of its structural genes in cells with large amounts of environmental trp, but expressing a mutant trp repressor that is unable to bind trp? A. The trp operon would be completely repressed due to the abundance of trp B. The trp operon would be transcribed much less than...
please help me with the question 15 to 18.
Basic structure of an operon Note that the diagram below is one section of DNA master strend with some areas of DNA labeled in blocks The bracketed area illustrates the basic parts of an operon repressor gene promoter operator structural genes DNA 3 mRNA 5 - 3 repressor protein shown attached to operator #2 Repressor preten "Use purple to color in the repressor gene. The repressor gene codes for a repressor...
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...
Which of the following statements is correct concerning operon gene control? Positive control requires an activator protein to stimulate transcription of the structural genes within an operon. In negative control, a repressor protein inhibits or turns off transcription of the structural genes within the operon. An inducible operon normally is not transcribed. It requires an inducer molecule to stimulate transcription either by inactivating a repressor protein in a negative inducible operon or by stimulating the activator protein in a positive...
UT EID: D. 5 E. 6 13. For the E. coli strain containing the following alleles of the lac operon, expression of lacZ and lacY is inducible, constitutively on or permanently repressed. (erepressor; r cannot bind operator: osoperator, o cannot bind repressor, lac are LOF mutations) A. lacZ is inducible, lacY is constitutively on. B. lacZ is constitutively on, lacY is inducible. C. lacZ is permanently repressed, lacY is constitutively on. D. lacZ is constitutively on, lacY is permanently repressed....
Most questions answered within 3 hours.
-
Compare and contrast the linear motion and angular motion
equations F ma and . That is,...
asked 10 minutes ago -
Now that this course has taken you on a journey of introduction
to the world of...
asked 50 minutes ago -
Given a regression sum of squares equal to 2373.59 and a total
sum of squares equal...
asked 1 hour ago -
The sandwich maker of the EE-Cole-Eye Sandwich Truck was just
fired (for a reason described below)...
asked 3 hours ago -
Name the following coordination compounds using systematic
nomenclature.
1. [Co(H2O)6]Cl2:
2. [Cr(NH3)6](NO3)3:
3. K4[Fe(CN)6]:
4. Na[Au(CN)4]:...
asked 2 hours ago -
Propose an efficient synthesis of 2-Bromo-5-nitrotoluene from
benzene. Hint: 3 steps. Consider directing effects of substituents....
asked 4 hours ago -
This assignment will explore the impact of corporate decisions
on a local versus a global perspective....
asked 3 hours ago -
Given the function below, F(w,x,y,z)= x’z+w’z’+w’y
a) draw a logic diagram for an implementation which uses...
asked 3 hours ago -
Most political philosophers believe we have a duty to obey laws,
even if the laws in...
asked 4 hours ago -
Which of the following are common negotiation outcome
mistakes?
a. Leave money on the table b....
asked 4 hours ago -
Convert the following quantities:
a) 0.819 atm to torr b) 512 mmHg to bar c) 11.2...
asked 5 hours ago -
C ++ Implement cat command
The purpose of this assignment is to provide practice using the...
asked 5 hours ago