Bacterial genomes frequently contain groups of genes organized into operons. What is the biological advantage of operons to bacteria? Identify the regulatory components you would expect to find in an operon. How are the expressed genes of an operon usually arranged?

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

Chapter 12, Problem 1P

Bacterial genomes frequently contain groups of genes organized into operons. What is the biological advantage of operons to bacteria? Identify the regulatory components you would expect to find in an operon. How are the expressed genes of an operon usually arranged?

Expert Solution & Answer

Summary Introduction

To review:

The genome of bacteria contains operons that consist of a group of genes. Describe the advantage of these operons to bacteria. Explain the expected regulatory components present in an operon. Also illustrate the arrangement of expressed genes of an operon?

Introduction:

The first operon was discovered in E. coli - “lac operon”- by a group of scientists- Francois Jacob, Andre Michel Lwoff and Jacques Monod in 1960. All the genes are regulated for expression via operons. Operons control the gene expression of a group of genes present on it via positive and negative operons. These genes present on an operon are called structural genes. These structural genes are transcribed together. Hence, the genes with operons are either transcribed together or not at all. Each operon will have a single promoter, regulatory gene/ region, operator, and the structural genes.

Explanation of Solution

The gene expression in prokaryotes is completely dependent on the availability of the nutrients in a cell. To save energy and upsurge efficiency, bacteria have operons. The stretch of DNA that regulates the activity of structural genes and a group of genes is referred to as operons. They are regulated by positive and negative gene regulation. A single operon will give expressions of many gene products that save the energy of bacteria and increase the efficiency by gaining large amount of functional proteins. As bacteria have coupled transcription and translation, as soon as the group of genes on an operon is transcribed, they are converted to proteins. The genes are located one after another which allows protein synthesis to be controlled under a single promoter. To control the expression, the operon is switched on or off, according to the need of a cell.

The operon has regulatory components- Promoter, repressor, and activators/inducer.

The expressed genes are arranged after the regulatory region of the gene in a fashion one after another.

Genetic Analysis: An Integrated Approach (3rd Edition), Chapter 12, Problem 1P

Conclusion

Operons in bacteria are described and the subsequent facts related to it are explained.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

The transcription of many bacterial genes relies on functional groups called operons, such as the tryptophan operon. What is an operon?

If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would you expect? A) The three genes of the lac operon will be expressed normally. B) The repressor will not be able to bind to the operon. C) The operon will still transcribe the lacZ and lacY genes, but the mRNA will not be translated. D) LacZ will not be transcribed and Beta galactosidase will not be produced.

What is the phenotype of an E. coli strain with a mutation in the lac operator that allows the lac repressor to irreversibly bind the operator? Assume glucose is absent. 1S A) O Transcription of the operon is very high whether lactose is present or not. B) O Transcription of the operon is very low whether lactose is present or not. C) O Transcription of the operon is high in the presence of lactose, and low in its absence. D) O Transcription of the operon is low in the presence of lactose, and high in its absence.

Answer 2

Textbook Question

Chapter 12, Problem 1P

Bacterial genomes frequently contain groups of genes organized into operons. What is the biological advantage of operons to bacteria? Identify the regulatory components you would expect to find in an operon. How are the expressed genes of an operon usually arranged?

Expert Solution & Answer

Summary Introduction

To review:

The genome of bacteria contains operons that consist of a group of genes. Describe the advantage of these operons to bacteria. Explain the expected regulatory components present in an operon. Also illustrate the arrangement of expressed genes of an operon?

Introduction:

The first operon was discovered in E. coli - “lac operon”- by a group of scientists- Francois Jacob, Andre Michel Lwoff and Jacques Monod in 1960. All the genes are regulated for expression via operons. Operons control the gene expression of a group of genes present on it via positive and negative operons. These genes present on an operon are called structural genes. These structural genes are transcribed together. Hence, the genes with operons are either transcribed together or not at all. Each operon will have a single promoter, regulatory gene/ region, operator, and the structural genes.

Explanation of Solution

The gene expression in prokaryotes is completely dependent on the availability of the nutrients in a cell. To save energy and upsurge efficiency, bacteria have operons. The stretch of DNA that regulates the activity of structural genes and a group of genes is referred to as operons. They are regulated by positive and negative gene regulation. A single operon will give expressions of many gene products that save the energy of bacteria and increase the efficiency by gaining large amount of functional proteins. As bacteria have coupled transcription and translation, as soon as the group of genes on an operon is transcribed, they are converted to proteins. The genes are located one after another which allows protein synthesis to be controlled under a single promoter. To control the expression, the operon is switched on or off, according to the need of a cell.

The operon has regulatory components- Promoter, repressor, and activators/inducer.

The expressed genes are arranged after the regulatory region of the gene in a fashion one after another.

Genetic Analysis: An Integrated Approach (3rd Edition), Chapter 12, Problem 1P

Conclusion

Operons in bacteria are described and the subsequent facts related to it are explained.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 12, Problem 1P

Bacterial genomes frequently contain groups of genes organized into operons. What is the biological advantage of operons to bacteria? Identify the regulatory components you would expect to find in an operon. How are the expressed genes of an operon usually arranged?

Expert Solution & Answer

Summary Introduction

To review:

The genome of bacteria contains operons that consist of a group of genes. Describe the advantage of these operons to bacteria. Explain the expected regulatory components present in an operon. Also illustrate the arrangement of expressed genes of an operon?

Introduction:

The first operon was discovered in E. coli - “lac operon”- by a group of scientists- Francois Jacob, Andre Michel Lwoff and Jacques Monod in 1960. All the genes are regulated for expression via operons. Operons control the gene expression of a group of genes present on it via positive and negative operons. These genes present on an operon are called structural genes. These structural genes are transcribed together. Hence, the genes with operons are either transcribed together or not at all. Each operon will have a single promoter, regulatory gene/ region, operator, and the structural genes.

Explanation of Solution

The gene expression in prokaryotes is completely dependent on the availability of the nutrients in a cell. To save energy and upsurge efficiency, bacteria have operons. The stretch of DNA that regulates the activity of structural genes and a group of genes is referred to as operons. They are regulated by positive and negative gene regulation. A single operon will give expressions of many gene products that save the energy of bacteria and increase the efficiency by gaining large amount of functional proteins. As bacteria have coupled transcription and translation, as soon as the group of genes on an operon is transcribed, they are converted to proteins. The genes are located one after another which allows protein synthesis to be controlled under a single promoter. To control the expression, the operon is switched on or off, according to the need of a cell.

The operon has regulatory components- Promoter, repressor, and activators/inducer.

The expressed genes are arranged after the regulatory region of the gene in a fashion one after another.

Genetic Analysis: An Integrated Approach (3rd Edition), Chapter 12, Problem 1P

Conclusion

Operons in bacteria are described and the subsequent facts related to it are explained.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 12, Problem 1P

Bacterial genomes frequently contain groups of genes organized into operons. What is the biological advantage of operons to bacteria? Identify the regulatory components you would expect to find in an operon. How are the expressed genes of an operon usually arranged?

Expert Solution & Answer

Summary Introduction

To review:

The genome of bacteria contains operons that consist of a group of genes. Describe the advantage of these operons to bacteria. Explain the expected regulatory components present in an operon. Also illustrate the arrangement of expressed genes of an operon?

Introduction:

The first operon was discovered in E. coli - “lac operon”- by a group of scientists- Francois Jacob, Andre Michel Lwoff and Jacques Monod in 1960. All the genes are regulated for expression via operons. Operons control the gene expression of a group of genes present on it via positive and negative operons. These genes present on an operon are called structural genes. These structural genes are transcribed together. Hence, the genes with operons are either transcribed together or not at all. Each operon will have a single promoter, regulatory gene/ region, operator, and the structural genes.

Explanation of Solution

The gene expression in prokaryotes is completely dependent on the availability of the nutrients in a cell. To save energy and upsurge efficiency, bacteria have operons. The stretch of DNA that regulates the activity of structural genes and a group of genes is referred to as operons. They are regulated by positive and negative gene regulation. A single operon will give expressions of many gene products that save the energy of bacteria and increase the efficiency by gaining large amount of functional proteins. As bacteria have coupled transcription and translation, as soon as the group of genes on an operon is transcribed, they are converted to proteins. The genes are located one after another which allows protein synthesis to be controlled under a single promoter. To control the expression, the operon is switched on or off, according to the need of a cell.

The operon has regulatory components- Promoter, repressor, and activators/inducer.

The expressed genes are arranged after the regulatory region of the gene in a fashion one after another.

Genetic Analysis: An Integrated Approach (3rd Edition), Chapter 12, Problem 1P

Conclusion

Operons in bacteria are described and the subsequent facts related to it are explained.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

To review:

The genome of bacteria contains operons that consist of a group of genes. Describe the advantage of these operons to bacteria. Explain the expected regulatory components present in an operon. Also illustrate the arrangement of expressed genes of an operon?

Introduction:

The first operon was discovered in E. coli - “lac operon”- by a group of scientists- Francois Jacob, Andre Michel Lwoff and Jacques Monod in 1960. All the genes are regulated for expression via operons. Operons control the gene expression of a group of genes present on it via positive and negative operons. These genes present on an operon are called structural genes. These structural genes are transcribed together. Hence, the genes with operons are either transcribed together or not at all. Each operon will have a single promoter, regulatory gene/ region, operator, and the structural genes.

Explanation of Solution

The gene expression in prokaryotes is completely dependent on the availability of the nutrients in a cell. To save energy and upsurge efficiency, bacteria have operons. The stretch of DNA that regulates the activity of structural genes and a group of genes is referred to as operons. They are regulated by positive and negative gene regulation. A single operon will give expressions of many gene products that save the energy of bacteria and increase the efficiency by gaining large amount of functional proteins. As bacteria have coupled transcription and translation, as soon as the group of genes on an operon is transcribed, they are converted to proteins. The genes are located one after another which allows protein synthesis to be controlled under a single promoter. To control the expression, the operon is switched on or off, according to the need of a cell.

The operon has regulatory components- Promoter, repressor, and activators/inducer.

The expressed genes are arranged after the regulatory region of the gene in a fashion one after another.

Genetic Analysis: An Integrated Approach (3rd Edition), Chapter 12, Problem 1P

Conclusion

Operons in bacteria are described and the subsequent facts related to it are explained.

Answer 8

Expert Solution & Answer

Summary Introduction

To review:

The genome of bacteria contains operons that consist of a group of genes. Describe the advantage of these operons to bacteria. Explain the expected regulatory components present in an operon. Also illustrate the arrangement of expressed genes of an operon?

Introduction:

The first operon was discovered in E. coli - “lac operon”- by a group of scientists- Francois Jacob, Andre Michel Lwoff and Jacques Monod in 1960. All the genes are regulated for expression via operons. Operons control the gene expression of a group of genes present on it via positive and negative operons. These genes present on an operon are called structural genes. These structural genes are transcribed together. Hence, the genes with operons are either transcribed together or not at all. Each operon will have a single promoter, regulatory gene/ region, operator, and the structural genes.

Explanation of Solution

The gene expression in prokaryotes is completely dependent on the availability of the nutrients in a cell. To save energy and upsurge efficiency, bacteria have operons. The stretch of DNA that regulates the activity of structural genes and a group of genes is referred to as operons. They are regulated by positive and negative gene regulation. A single operon will give expressions of many gene products that save the energy of bacteria and increase the efficiency by gaining large amount of functional proteins. As bacteria have coupled transcription and translation, as soon as the group of genes on an operon is transcribed, they are converted to proteins. The genes are located one after another which allows protein synthesis to be controlled under a single promoter. To control the expression, the operon is switched on or off, according to the need of a cell.

The operon has regulatory components- Promoter, repressor, and activators/inducer.

The expressed genes are arranged after the regulatory region of the gene in a fashion one after another.

Genetic Analysis: An Integrated Approach (3rd Edition), Chapter 12, Problem 1P

Conclusion

Operons in bacteria are described and the subsequent facts related to it are explained.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

To review:

The genome of bacteria contains operons that consist of a group of genes. Describe the advantage of these operons to bacteria. Explain the expected regulatory components present in an operon. Also illustrate the arrangement of expressed genes of an operon?

Introduction:

The first operon was discovered in E. coli - “lac operon”- by a group of scientists- Francois Jacob, Andre Michel Lwoff and Jacques Monod in 1960. All the genes are regulated for expression via operons. Operons control the gene expression of a group of genes present on it via positive and negative operons. These genes present on an operon are called structural genes. These structural genes are transcribed together. Hence, the genes with operons are either transcribed together or not at all. Each operon will have a single promoter, regulatory gene/ region, operator, and the structural genes.

Answer 12

Explanation of Solution

The gene expression in prokaryotes is completely dependent on the availability of the nutrients in a cell. To save energy and upsurge efficiency, bacteria have operons. The stretch of DNA that regulates the activity of structural genes and a group of genes is referred to as operons. They are regulated by positive and negative gene regulation. A single operon will give expressions of many gene products that save the energy of bacteria and increase the efficiency by gaining large amount of functional proteins. As bacteria have coupled transcription and translation, as soon as the group of genes on an operon is transcribed, they are converted to proteins. The genes are located one after another which allows protein synthesis to be controlled under a single promoter. To control the expression, the operon is switched on or off, according to the need of a cell.

The operon has regulatory components- Promoter, repressor, and activators/inducer.

The expressed genes are arranged after the regulatory region of the gene in a fashion one after another.

Genetic Analysis: An Integrated Approach (3rd Edition), Chapter 12, Problem 1P

Answer 13

Conclusion

Operons in bacteria are described and the subsequent facts related to it are explained.

Answer 14

Ch. 12 - 12.1 Bacterial genomes frequently contain groups...Ch. 12 - Transcriptional regulation of operon gene...Ch. 12 - Why is it essential that bacterial cells be able...Ch. 12 - Identify similarities and differences between an...Ch. 12 - The transcription of -galactosidase and permease...Ch. 12 - 12.6 Is attenuation the product of an allosteric...Ch. 12 - The trpL region contains four repeated DNA...Ch. 12 - The CAP binding site in the lac promoter is the...Ch. 12 - What role does cAMP play in transcription of lac...Ch. 12 - How would a cap- mutation that produces an...

Bacterial genomes frequently contain groups of genes organized into operons. What is the biological advantage of operons to bacteria? Identify the regulatory components you would expect to find in an operon. How are the expressed genes of an operon usually arranged?

Concept explainers

Videos

Explanation of Solution

Want to see more full solutions like this?

Chapter 12 Solutions