Homework Answers
The regulatory gene are the genes that regulate the transcription of fo the structural genes. The structural eges are the genes that codes for the tracnription and then the protein form them. THe constitutive genss are the genes that control the expression of different genes.
The answer is D.
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the answer I gave was wrong
A gene that codes for a protein that is used...
D Question 25 1 pts A gene that codes for a protein that is used in...
D Question 25 1 pts A gene that codes for a protein that is used in the cell metabolism is called structural gene constitutive gene regulatory gene metabolic gene
the answer I gave was wrong 072 P A typical operon contains several regions. In which...
the answer I gave was wrong
072 P A typical operon contains several regions. In which region does a repressor protein bind? Splice site Promoter Structural genes Operator
the answer I gave was wrong If a mutation prevents the formation of the antiterminator 2+3...
the answer I gave was wrong
If a mutation prevents the formation of the antiterminator 2+3 loop in the trp operon, what would be the effect? constitutive transcription attenuation of transcription regardless of tryptophan levels transcription only when tryptophan is present transcription only when tryptophan is absent
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...
the answer I gave was wrong torrect 0. Question 38 Alternative splicing of an eukaryotic gene...
the answer I gave was wrong
torrect 0. Question 38 Alternative splicing of an eukaryotic gene can occur if: There is at least one intron If there is more than one consensus sequence where the spliceosome can cut There are more than two spliceosomes available There are multiple transcription factors affecting intron splicing
Many plasmids used to express recombinant protein also carry a gene which codes for resistance to...
Many plasmids used to express recombinant protein also carry a gene which codes for resistance to an antibiotic. Why is such a gene often included? TTT Arial 3 (12pt) - T - = - = - S e Path: p Words:0
A reporter gene--that is, a gene whose activity is relatively easy to detect--is commonly used to...
A reporter gene--that is, a
gene whose activity is relatively easy to detect--is commonly used
to study promoter activity under a variety of investigative
circumstances. Recombinant DNA technology is used to attach such a
reporter gene to the promoter of interest, after which the
recombinant molecule is inserted by transformation or transfection
into the cell or host organism of choice. Green fluorescent protein
(GFP) from the jellyfish Aequorea victoria fluoresces green when
exposed to blue light. Assume that you wished...
Suppose you are working on a gene that encodes a protein that triggers apoptosis of the...
Suppose you are working on a gene that encodes a protein that triggers apoptosis of the cell (programmed cell death). In a certain cell, this gene is transcriptionally ON, that is, primary transcript is being made. Choose a mechanism by which to prevent or reduce the production of active apoptosis protein, and describe the specific properties of the new regulatory protein that the cell would have to make in order to do this.
In the lac operon, 1 codes for the repressor protein, P is the promoter which is...
In the lac operon, 1 codes for the repressor protein, P is the promoter which is necessary for binding RNA polymerase, O is the operator, and Z codes for the B-galactosidase. Assuming (+) denotes the wild type for a particular locus, (-) denotes a lack of a particular gene product or function, O^c is a constitutive operator, and I^s is a super repressor. Use a "+++" sign to indicate that significant quantities of functional B-galactosidase are present, a '+' sign...
Which of the following is NOT true of the Rb protein? a. It inhibits gene expression...
Which of the following is NOT true of the Rb protein? a. It inhibits gene expression by binding to a gene regulatory protein. b. In the absence of mitogen it promotes cell proliferation. c. Its activity is controlled by phosphorylation. d. It is a tumor suppressor protein. e. None of the above (= all of the above are true).
D Question 25 1 pts A gene that codes for a protein that is used in the cell metabolism is called structural gene constitutive gene regulatory gene metabolic gene
the answer I gave was wrong
072 P A typical operon contains several regions. In which region does a repressor protein bind? Splice site Promoter Structural genes Operator
the answer I gave was wrong
If a mutation prevents the formation of the antiterminator 2+3 loop in the trp operon, what would be the effect? constitutive transcription attenuation of transcription regardless of tryptophan levels transcription only when tryptophan is present transcription only when tryptophan is absent
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...
the answer I gave was wrong
torrect 0. Question 38 Alternative splicing of an eukaryotic gene can occur if: There is at least one intron If there is more than one consensus sequence where the spliceosome can cut There are more than two spliceosomes available There are multiple transcription factors affecting intron splicing
Many plasmids used to express recombinant protein also carry a gene which codes for resistance to an antibiotic. Why is such a gene often included? TTT Arial 3 (12pt) - T - = - = - S e Path: p Words:0
A reporter gene--that is, a
gene whose activity is relatively easy to detect--is commonly used
to study promoter activity under a variety of investigative
circumstances. Recombinant DNA technology is used to attach such a
reporter gene to the promoter of interest, after which the
recombinant molecule is inserted by transformation or transfection
into the cell or host organism of choice. Green fluorescent protein
(GFP) from the jellyfish Aequorea victoria fluoresces green when
exposed to blue light. Assume that you wished...
In the lac operon, 1 codes for the repressor protein, P is the promoter which is necessary for binding RNA polymerase, O is the operator, and Z codes for the B-galactosidase. Assuming (+) denotes the wild type for a particular locus, (-) denotes a lack of a particular gene product or function, O^c is a constitutive operator, and I^s is a super repressor. Use a "+++" sign to indicate that significant quantities of functional B-galactosidase are present, a '+' sign...
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