The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Question

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Answer 1

Question

Chapter 18, Problem 1TYK

Summary Introduction

Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Genes involved in the metabolism of the lactose are considered to be an operon because they are controlled by the same promoter. The operon is the gene segment, which is controlled by the same promoter.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) gives that the genes are all controlled by the same promoter. The entire structural genes that encode enzymes required to use lactose as an energy source lie adjacent to each other in the lactose (or lac) operon under the control of a single lac promoter. Hence, Option (d) is correct.

Explanation for incorrect answers:

Option (a) gives that the genes occupy adjacent locations on the E. coli chromosome. The gene sequence, which regulates the metabolism of the lactose, is not located adjacently; they are located on the same DNA (deoxyribonucleic acid) sequence. So, it is an incorrect option.

Option (b) gives that the genes have a similar function. The genes that are involved in the metabolism of the lactose have different functions. They are involved in the secretion of different enzymes. So, it is an incorrect option.

Option (c) gives that the genes are all required for normal cell functioning. These genes are not required for the normal metabolism of the lactose in the cell. The operons are only responsible for the regulation of the genes. So, it is an incorrect option.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

All the genes involved in the metabolism of the lactose are controlled by the same promoter and are called operon.

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Students have asked these similar questions

Operons involved with the biosynthesis of molecules such as amino acids are most likely to be regulated in which of the following ways? a. The product of the biosynthetic pathway represses transcription. b. The product of the biosynthetic pathway activates transcription. c. A precursor of the biosynthetic pathway represses transcription. d. A precursor of the biosynthetic pathway activates transcription.

What is the role of a substrate that controls a repressible operon? a. increase the production of inactive repressor proteins b. bind to the repressor protein and activate it c. bind to the repressor protein and deactivate it d. bind to the promoter region and decrease the affinity of RNA polymerase for the promoter

Operons can not be: a. Negatively regulated b. Positively regulated c. Constitutive d. Inducible e. Repressible f. coding for related structural proteins g. Expressed by use of RNA polymerase h. Dependent on a promoter for expression

Answer 2

Question

Chapter 18, Problem 1TYK

Summary Introduction

Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Genes involved in the metabolism of the lactose are considered to be an operon because they are controlled by the same promoter. The operon is the gene segment, which is controlled by the same promoter.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) gives that the genes are all controlled by the same promoter. The entire structural genes that encode enzymes required to use lactose as an energy source lie adjacent to each other in the lactose (or lac) operon under the control of a single lac promoter. Hence, Option (d) is correct.

Explanation for incorrect answers:

Option (a) gives that the genes occupy adjacent locations on the E. coli chromosome. The gene sequence, which regulates the metabolism of the lactose, is not located adjacently; they are located on the same DNA (deoxyribonucleic acid) sequence. So, it is an incorrect option.

Option (b) gives that the genes have a similar function. The genes that are involved in the metabolism of the lactose have different functions. They are involved in the secretion of different enzymes. So, it is an incorrect option.

Option (c) gives that the genes are all required for normal cell functioning. These genes are not required for the normal metabolism of the lactose in the cell. The operons are only responsible for the regulation of the genes. So, it is an incorrect option.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

All the genes involved in the metabolism of the lactose are controlled by the same promoter and are called operon.

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Answer 3

Question

Chapter 18, Problem 1TYK

Summary Introduction

Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Genes involved in the metabolism of the lactose are considered to be an operon because they are controlled by the same promoter. The operon is the gene segment, which is controlled by the same promoter.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) gives that the genes are all controlled by the same promoter. The entire structural genes that encode enzymes required to use lactose as an energy source lie adjacent to each other in the lactose (or lac) operon under the control of a single lac promoter. Hence, Option (d) is correct.

Explanation for incorrect answers:

Option (a) gives that the genes occupy adjacent locations on the E. coli chromosome. The gene sequence, which regulates the metabolism of the lactose, is not located adjacently; they are located on the same DNA (deoxyribonucleic acid) sequence. So, it is an incorrect option.

Option (b) gives that the genes have a similar function. The genes that are involved in the metabolism of the lactose have different functions. They are involved in the secretion of different enzymes. So, it is an incorrect option.

Option (c) gives that the genes are all required for normal cell functioning. These genes are not required for the normal metabolism of the lactose in the cell. The operons are only responsible for the regulation of the genes. So, it is an incorrect option.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

All the genes involved in the metabolism of the lactose are controlled by the same promoter and are called operon.

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

Answer 4

Question

Chapter 18, Problem 1TYK

Summary Introduction

Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Genes involved in the metabolism of the lactose are considered to be an operon because they are controlled by the same promoter. The operon is the gene segment, which is controlled by the same promoter.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) gives that the genes are all controlled by the same promoter. The entire structural genes that encode enzymes required to use lactose as an energy source lie adjacent to each other in the lactose (or lac) operon under the control of a single lac promoter. Hence, Option (d) is correct.

Explanation for incorrect answers:

Option (a) gives that the genes occupy adjacent locations on the E. coli chromosome. The gene sequence, which regulates the metabolism of the lactose, is not located adjacently; they are located on the same DNA (deoxyribonucleic acid) sequence. So, it is an incorrect option.

Option (b) gives that the genes have a similar function. The genes that are involved in the metabolism of the lactose have different functions. They are involved in the secretion of different enzymes. So, it is an incorrect option.

Option (c) gives that the genes are all required for normal cell functioning. These genes are not required for the normal metabolism of the lactose in the cell. The operons are only responsible for the regulation of the genes. So, it is an incorrect option.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

All the genes involved in the metabolism of the lactose are controlled by the same promoter and are called operon.

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

Answer 5

Chapter 18, Problem 1TYK

Summary Introduction

Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Genes involved in the metabolism of the lactose are considered to be an operon because they are controlled by the same promoter. The operon is the gene segment, which is controlled by the same promoter.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) gives that the genes are all controlled by the same promoter. The entire structural genes that encode enzymes required to use lactose as an energy source lie adjacent to each other in the lactose (or lac) operon under the control of a single lac promoter. Hence, Option (d) is correct.

Explanation for incorrect answers:

Option (a) gives that the genes occupy adjacent locations on the E. coli chromosome. The gene sequence, which regulates the metabolism of the lactose, is not located adjacently; they are located on the same DNA (deoxyribonucleic acid) sequence. So, it is an incorrect option.

Option (b) gives that the genes have a similar function. The genes that are involved in the metabolism of the lactose have different functions. They are involved in the secretion of different enzymes. So, it is an incorrect option.

Option (c) gives that the genes are all required for normal cell functioning. These genes are not required for the normal metabolism of the lactose in the cell. The operons are only responsible for the regulation of the genes. So, it is an incorrect option.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

All the genes involved in the metabolism of the lactose are controlled by the same promoter and are called operon.

Answer 6

Chapter 18, Problem 1TYK

Summary Introduction

Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Genes involved in the metabolism of the lactose are considered to be an operon because they are controlled by the same promoter. The operon is the gene segment, which is controlled by the same promoter.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) gives that the genes are all controlled by the same promoter. The entire structural genes that encode enzymes required to use lactose as an energy source lie adjacent to each other in the lactose (or lac) operon under the control of a single lac promoter. Hence, Option (d) is correct.

Explanation for incorrect answers:

Option (a) gives that the genes occupy adjacent locations on the E. coli chromosome. The gene sequence, which regulates the metabolism of the lactose, is not located adjacently; they are located on the same DNA (deoxyribonucleic acid) sequence. So, it is an incorrect option.

Option (b) gives that the genes have a similar function. The genes that are involved in the metabolism of the lactose have different functions. They are involved in the secretion of different enzymes. So, it is an incorrect option.

Option (c) gives that the genes are all required for normal cell functioning. These genes are not required for the normal metabolism of the lactose in the cell. The operons are only responsible for the regulation of the genes. So, it is an incorrect option.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

All the genes involved in the metabolism of the lactose are controlled by the same promoter and are called operon.

Answer 7

Chapter 18, Problem 1TYK

Summary Introduction

Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Answer 8

Expert Solution & Answer

Answer to Problem 1TYK

Correct answer:

Genes involved in the metabolism of the lactose are considered to be an operon because they are controlled by the same promoter. The operon is the gene segment, which is controlled by the same promoter.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Explanation/Justification for the correct answer:

Option (d) gives that the genes are all controlled by the same promoter. The entire structural genes that encode enzymes required to use lactose as an energy source lie adjacent to each other in the lactose (or lac) operon under the control of a single lac promoter. Hence, Option (d) is correct.

Explanation for incorrect answers:

Option (a) gives that the genes occupy adjacent locations on the E. coli chromosome. The gene sequence, which regulates the metabolism of the lactose, is not located adjacently; they are located on the same DNA (deoxyribonucleic acid) sequence. So, it is an incorrect option.

Option (b) gives that the genes have a similar function. The genes that are involved in the metabolism of the lactose have different functions. They are involved in the secretion of different enzymes. So, it is an incorrect option.

Option (c) gives that the genes are all required for normal cell functioning. These genes are not required for the normal metabolism of the lactose in the cell. The operons are only responsible for the regulation of the genes. So, it is an incorrect option.

Hence, options (a), (b), and (c) are incorrect.

Answer 12

Conclusion

All the genes involved in the metabolism of the lactose are controlled by the same promoter and are called operon.

Answer 13

Ch. 18 - Prob. 1TYK Ch. 18 - Prob. 2TYK Ch. 18 - Prob. 3TYK Ch. 18 - Prob. 4TYK Ch. 18 - Predict what would happen to regulation of the lac...Ch. 18 - Prob. 8TYU Ch. 18 - Prob. 10TYPSS Ch. 18 - Prob. 11PIAT Ch. 18 - Prob. 12PIAT Ch. 18 - Prob. 13PIAT

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Concept explainers

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Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Answer to Problem 1TYK

Explanation of Solution

Want to see more full solutions like this?

Chapter 18 Solutions

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Concept explainers

Videos

Introduction: The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.

Answer to Problem 1TYK

Explanation of Solution

Want to see more full solutions like this?

Chapter 18 Solutions

Introduction:

The genes that are involved in the regulation of the lactose metabolism are found to be present in the single sequence. These sequences are regulated by a single promoter site.