When E coli has access to tryptophan in the environment, the trp repressor protein (does or...
When E coli has access to tryptophan in the environment, the trp repressor protein (does or does not) bind to the (operator or activator) and the trp genes (are or are not) transcribed.
Select the correct answer in the ( ).
Homework Answers
Answer=In tryptophan operon, tryptophan itself act as a co-repressor.Tryptophan Repressor is inactive in native form if Tryptophan is present in the medium then Tryptophan binds to Repressor and makes him Active.
Active Tryptophan Repressor binds to the operator and the Tryptophan genes are not transcribed.
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When E coli has access to tryptophan in the environment, the trp
repressor protein (does or...
A mutation in the operator of the trp operon prevents the repressor to bind to the...
A mutation in the operator of the trp operon prevents the repressor to bind to the operator, even in the presence of tryptophan. What is true with respect to the bacteria carrying this mutation? Select one: a. The bacteria will transcribe the genes of the trp operon even when tryptophan is present in the environment b. Tryptophan would not be able to bind to the repressor protein c. Small amounts of tryptophan will be lethal for the bacteria d. The...
For regulation of the trp operon, what happens to in the absence of tryptophan? repressor protein...
For regulation of the trp operon, what happens to in the absence of tryptophan? repressor protein (a) It binds to the operator, and represses transcription of genes in the trp operon (b) It cannot bind to the operator, and transcription of genes in the trp operon takes place (c) It binds to the regulatory gene that codes for the TrpR repressor, and represses its transcription (d) It cannot bind to the regulatory gene that codes for the TrpR repressor, and...
In terms of the Trpoperon, where would the Trp operon repressor protein most likely bind? Drag...
In terms of the Trpoperon, where would the Trp operon repressor protein most likely bind? Drag the "Trprepressor" label to the location where that repressor protein is most likely to bind and exert its effect on the system. (A Trprepressor Trp operon Trp operator F D C B A E. coli DNA promoter mRNA molecule series of enzymes required for tryptophan biosynthesis
here is the diagram ecause there is no repressor protein attached to the operator, what enzyme...
here is the diagram
ecause there is no repressor protein attached to the operator, what enzyme con attach to the promoter and move past the operator to transcribe the structural genes? Color this enzyme pink "color the repressor gene purple and the repressor protein it codes for red. Examine the shape of the repressor protein. 45) Is it an active or inactiverepressor protein? The diagram below shows the trp operon when turned off." Repressor gene Promoter Operator Structural genes DNA...
There are several possible mutations in the trp operon: trpP -is a mutation in the promoter...
There are several possible mutations in the trp operon:
trpP -is a mutation in the promoter sequence
that prevents RNA polymerase from binding to the promoter and
initiate transcription of the trp operon genes.
trpOcis a mutation in the operator sequence
that prevents the trp repressor protein from binding to
the operator to block transcription of the trp operon
genes.
trpR-is a mutation in the repressor protein
that either prevents repressor protein from being made or produces
a mutant repressor...
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....
1. If tryptophan interacts with a repressor protein (which it does in real life) and the...
1. If tryptophan interacts with a repressor protein (which it does in real life) and the trp operon is anabolic (which it is) a. What would happen to tryptophan production levels and energy expenditure in a mutant bacterial cell that had a repressor protein that was incapable of binding to tryptophan (but was normal in every other way) b. What would happen to tryptophan production levels and energy expenditure in a mutant bacterial cell that had a repressor protein that...
The tryptophan operator... A is an allosteric protein. binds to the tryptophan repressor when the repressor...
The tryptophan operator... A is an allosteric protein. binds to the tryptophan repressor when the repressor is bound to tryptophan 0 is required for production of the mRNA encoded by the tryptophan operon 1. is important for the production of the tryptophan repressor.
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...
please answer all questions QUESTION 1 Where do repressor proteins bind? Repressor sequence o 3' UTR...
please answer all questions
QUESTION 1 Where do repressor proteins bind? Repressor sequence o 3' UTR Activator sequence • Operator sequence A frameshift mutation: (choose all that apply) can change the splicing of a protein can change the amino acid sequence can change protein size can revert a deletion mutation QUESTION 3 Which of the following is the critical regulatory stage for the majority of genes? mRNA splicing Initiation of translation mRNA transport • Initiation of transcription QUESTION 4 Attenuation...
A mutation in the operator of the trp operon prevents the repressor to bind to the operator, even in the presence of tryptophan. What is true with respect to the bacteria carrying this mutation? Select one: a. The bacteria will transcribe the genes of the trp operon even when tryptophan is present in the environment b. Tryptophan would not be able to bind to the repressor protein c. Small amounts of tryptophan will be lethal for the bacteria d. The...
For regulation of the trp operon, what happens to in the absence of tryptophan? repressor protein (a) It binds to the operator, and represses transcription of genes in the trp operon (b) It cannot bind to the operator, and transcription of genes in the trp operon takes place (c) It binds to the regulatory gene that codes for the TrpR repressor, and represses its transcription (d) It cannot bind to the regulatory gene that codes for the TrpR repressor, and...
In terms of the Trpoperon, where would the Trp operon repressor protein most likely bind? Drag the "Trprepressor" label to the location where that repressor protein is most likely to bind and exert its effect on the system. (A Trprepressor Trp operon Trp operator F D C B A E. coli DNA promoter mRNA molecule series of enzymes required for tryptophan biosynthesis
here is the diagram
ecause there is no repressor protein attached to the operator, what enzyme con attach to the promoter and move past the operator to transcribe the structural genes? Color this enzyme pink "color the repressor gene purple and the repressor protein it codes for red. Examine the shape of the repressor protein. 45) Is it an active or inactiverepressor protein? The diagram below shows the trp operon when turned off." Repressor gene Promoter Operator Structural genes DNA...
There are several possible mutations in the trp operon:
trpP -is a mutation in the promoter sequence
that prevents RNA polymerase from binding to the promoter and
initiate transcription of the trp operon genes.
trpOcis a mutation in the operator sequence
that prevents the trp repressor protein from binding to
the operator to block transcription of the trp operon
genes.
trpR-is a mutation in the repressor protein
that either prevents repressor protein from being made or produces
a mutant repressor...
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....
The tryptophan operator... A is an allosteric protein. binds to the tryptophan repressor when the repressor is bound to tryptophan 0 is required for production of the mRNA encoded by the tryptophan operon 1. is important for the production of the tryptophan repressor.
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...
please answer all questions
QUESTION 1 Where do repressor proteins bind? Repressor sequence o 3' UTR Activator sequence • Operator sequence A frameshift mutation: (choose all that apply) can change the splicing of a protein can change the amino acid sequence can change protein size can revert a deletion mutation QUESTION 3 Which of the following is the critical regulatory stage for the majority of genes? mRNA splicing Initiation of translation mRNA transport • Initiation of transcription QUESTION 4 Attenuation...
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