Homework Answers
Answer:
Option 2. Induction.
Explanation:
If expression of a gene is regulated by stopping a repressor protein from binding to an operator transcription could also be described as induction because to stop a repressor from binding to an operator an inducer is used which binds to the repressor. This, in turn, prevents the repressor from binding to the operator.
Therefore, an inducer can bind with the repressor and prevent the repressor in binding to an operator and therefore this process is described as induction.
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if expression of a gene is regulated by stopping a repressor protein from binding to an...
When lactose is absent: 1. Is the repressor protein bound to the operator? 2. Is gene...
When lactose is absent: 1. Is the repressor protein bound to the operator? 2. Is gene transcription regulated on or off? When lactose is present: 1. Is the repressor protein bound to the operator? 2. Is gene transcription regulated on or off?
Question 1 2 pts The expression of certain bacterial genes is regulated. Match each term with...
Question 1 2 pts The expression of certain bacterial genes is regulated. Match each term with the correct definition This is a small molecule that binds a repressor protein, causing the protein to change from an inactive form to an active form. I Choose ] Regulatory gene Promoter Terminator Structural gene Repressor protein Operator Inducer Corepressor This is a specific nucleotide sequen that a repressor protein binds to This is a specific nucleotide sequence Choose where RNA polymerase begins transcription...
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How would you predict that NH4 in the environment affects transcription of the gene for glutamate dehydrogenase? 01. Negative control 2. Induction 3. Positive control 4 Repression
1. (1 pt) If a gene is repressible and under positive control, A. Is the regulatory...
1. (1 pt) If a gene is repressible and under positive control, A. Is the regulatory protein an activator or repressor? B. Explain how an effector molecule, which binds to the regulatory protein, alters the regulatory protein’s ability to regulate expression of the gene. 2. (1 pt) Cis and trans are two terms used to describe mutations. A. Explain the molecular difference between these terms. B. indicate which type of mutation (cis or trans) is dominant to wild-type and which...
Match each term associated with genes and control of gene expression with the appropriate description. A...
Match each term associated with genes and control of gene expression with the appropriate description. A transcriptional unit" that consists of promoter multiple genes under the control of a single regulatory element. A transcriptional regulatory protein (prokaryotic or eukaryotic) which works by turning on or increasing gene transcription. activator The region of a gene to which RNA polymerase binds. Enhancer A transcriptional regulatory protein prokaryotic or eukaryotic) which works by turning off or decreasing gene transcription. repressor A molecule that...
TRANSCRIPTIONAL CONTROL OF GENE EXPRESSION CAN INVOLVE A. BINDING OF HORMONE-RECEPTOR COMPLEXES TO ENHANCERS B. REPRESSOR-MRNA...
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a. Antibody is prepared to the thr repressor protein isolated from a wild-type strain. Competetive antibody...
a. Antibody is prepared to the thr repressor protein isolated from a wild-type strain. Competetive antibody binding assays show that several times more repressor is present in an extract prepared from the derepressed mutant described above than in an extract prepared from the wild-type strain. What is your interpretation of these data? b. The repressor protein requires a pH of 6.1 for optimal binding to its operator in vitro. If the pH goes above pH 8.0, the repressor is unable...
3. Mutations in bacteria that affect gene regulation may have a cis- or trans-effect on the...
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The LacI protein is released from the operator sequence upon binding of IPTG, allowing the transcription...
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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...
When lactose is absent: 1. Is the repressor protein bound to the operator? 2. Is gene transcription regulated on or off? When lactose is present: 1. Is the repressor protein bound to the operator? 2. Is gene transcription regulated on or off?
Question 1 2 pts The expression of certain bacterial genes is regulated. Match each term with the correct definition This is a small molecule that binds a repressor protein, causing the protein to change from an inactive form to an active form. I Choose ] Regulatory gene Promoter Terminator Structural gene Repressor protein Operator Inducer Corepressor This is a specific nucleotide sequen that a repressor protein binds to This is a specific nucleotide sequence Choose where RNA polymerase begins transcription...
How would you predict that NH4 in the environment affects transcription of the gene for glutamate dehydrogenase? 01. Negative control 2. Induction 3. Positive control 4 Repression
Match each term associated with genes and control of gene expression with the appropriate description. A transcriptional unit" that consists of promoter multiple genes under the control of a single regulatory element. A transcriptional regulatory protein (prokaryotic or eukaryotic) which works by turning on or increasing gene transcription. activator The region of a gene to which RNA polymerase binds. Enhancer A transcriptional regulatory protein prokaryotic or eukaryotic) which works by turning off or decreasing gene transcription. repressor A molecule that...
a. Antibody is prepared to the thr repressor protein isolated from a wild-type strain. Competetive antibody binding assays show that several times more repressor is present in an extract prepared from the derepressed mutant described above than in an extract prepared from the wild-type strain. What is your interpretation of these data? b. The repressor protein requires a pH of 6.1 for optimal binding to its operator in vitro. If the pH goes above pH 8.0, the repressor is unable...
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...
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