The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

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Answer 1

Question

Chapter 20, Problem 1A

Summary Introduction

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

The proto-oncogenes are present inside the normal cells and initiate the process of cell cycle, division and mitosis. The tumor suppressor genes inhibit the process of cell division and proliferation of the cells. Therefore, option (d) is correct.

Explanation of Solution

Reason for the correct statement:

The proto-oncogenes synthesize a protein, which activates the process of cell cycle, proliferation and cell signaling. The tumor suppressor genes inhibit the process of cell cycle and proliferation.

Option (d) is given as “proto-oncogenes; tumor suppressor genes”.

“Normally in a noncancer cell, proto-oncogenes stimulate the cell cycle, and tumor suppressor genes inhibit the cell cycle”, it is the right answer.

Hence, option (d) is correct.

Reasons for the incorrect statements:

Option (a) is given as “tumor suppressor genes; oncogenes”.
The tumor specific genes inhibit the process of cell cycle and proliferation, whereas oncogenes activate the process of cell signaling in the cancerous cells. They are formed after the mutation of the proto-oncogenes. So, it is a wrong answer.

Option (b) is given as “oncogenes; tumor suppressor genes”.
The oncogenes activate the process of cell signaling in the cancer cells. The tumor suppressor cells inhibit the process of cell cycle proliferation and cell division. So, it is a wrong answer.

Option (c) is given as “proto-oncogenes; oncogenes”.
The proto-oncogenes are present in the normal cells and activate the process of cell cycle. The oncogenes are present in the cancerous cells and activate the process of cell signaling. So, it is a wrong answer.

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

Conclusion

The proto-oncogenes activate the process of cell division and cell proliferation in the normal cells, whereas the tumor suppressor genes inhibit the process of cell proliferation, cell cycle and division.

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Answer 2

Question

Chapter 20, Problem 1A

Summary Introduction

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

The proto-oncogenes are present inside the normal cells and initiate the process of cell cycle, division and mitosis. The tumor suppressor genes inhibit the process of cell division and proliferation of the cells. Therefore, option (d) is correct.

Explanation of Solution

Reason for the correct statement:

The proto-oncogenes synthesize a protein, which activates the process of cell cycle, proliferation and cell signaling. The tumor suppressor genes inhibit the process of cell cycle and proliferation.

Option (d) is given as “proto-oncogenes; tumor suppressor genes”.

“Normally in a noncancer cell, proto-oncogenes stimulate the cell cycle, and tumor suppressor genes inhibit the cell cycle”, it is the right answer.

Hence, option (d) is correct.

Reasons for the incorrect statements:

Option (a) is given as “tumor suppressor genes; oncogenes”.
The tumor specific genes inhibit the process of cell cycle and proliferation, whereas oncogenes activate the process of cell signaling in the cancerous cells. They are formed after the mutation of the proto-oncogenes. So, it is a wrong answer.

Option (b) is given as “oncogenes; tumor suppressor genes”.
The oncogenes activate the process of cell signaling in the cancer cells. The tumor suppressor cells inhibit the process of cell cycle proliferation and cell division. So, it is a wrong answer.

Option (c) is given as “proto-oncogenes; oncogenes”.
The proto-oncogenes are present in the normal cells and activate the process of cell cycle. The oncogenes are present in the cancerous cells and activate the process of cell signaling. So, it is a wrong answer.

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

Conclusion

The proto-oncogenes activate the process of cell division and cell proliferation in the normal cells, whereas the tumor suppressor genes inhibit the process of cell proliferation, cell cycle and division.

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Answer 3

Question

Chapter 20, Problem 1A

Summary Introduction

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

The proto-oncogenes are present inside the normal cells and initiate the process of cell cycle, division and mitosis. The tumor suppressor genes inhibit the process of cell division and proliferation of the cells. Therefore, option (d) is correct.

Explanation of Solution

Reason for the correct statement:

The proto-oncogenes synthesize a protein, which activates the process of cell cycle, proliferation and cell signaling. The tumor suppressor genes inhibit the process of cell cycle and proliferation.

Option (d) is given as “proto-oncogenes; tumor suppressor genes”.

“Normally in a noncancer cell, proto-oncogenes stimulate the cell cycle, and tumor suppressor genes inhibit the cell cycle”, it is the right answer.

Hence, option (d) is correct.

Reasons for the incorrect statements:

Option (a) is given as “tumor suppressor genes; oncogenes”.
The tumor specific genes inhibit the process of cell cycle and proliferation, whereas oncogenes activate the process of cell signaling in the cancerous cells. They are formed after the mutation of the proto-oncogenes. So, it is a wrong answer.

Option (b) is given as “oncogenes; tumor suppressor genes”.
The oncogenes activate the process of cell signaling in the cancer cells. The tumor suppressor cells inhibit the process of cell cycle proliferation and cell division. So, it is a wrong answer.

Option (c) is given as “proto-oncogenes; oncogenes”.
The proto-oncogenes are present in the normal cells and activate the process of cell cycle. The oncogenes are present in the cancerous cells and activate the process of cell signaling. So, it is a wrong answer.

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

Conclusion

The proto-oncogenes activate the process of cell division and cell proliferation in the normal cells, whereas the tumor suppressor genes inhibit the process of cell proliferation, cell cycle and division.

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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 20, Problem 1A

Summary Introduction

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

The proto-oncogenes are present inside the normal cells and initiate the process of cell cycle, division and mitosis. The tumor suppressor genes inhibit the process of cell division and proliferation of the cells. Therefore, option (d) is correct.

Explanation of Solution

Reason for the correct statement:

The proto-oncogenes synthesize a protein, which activates the process of cell cycle, proliferation and cell signaling. The tumor suppressor genes inhibit the process of cell cycle and proliferation.

Option (d) is given as “proto-oncogenes; tumor suppressor genes”.

“Normally in a noncancer cell, proto-oncogenes stimulate the cell cycle, and tumor suppressor genes inhibit the cell cycle”, it is the right answer.

Hence, option (d) is correct.

Reasons for the incorrect statements:

Option (a) is given as “tumor suppressor genes; oncogenes”.
The tumor specific genes inhibit the process of cell cycle and proliferation, whereas oncogenes activate the process of cell signaling in the cancerous cells. They are formed after the mutation of the proto-oncogenes. So, it is a wrong answer.

Option (b) is given as “oncogenes; tumor suppressor genes”.
The oncogenes activate the process of cell signaling in the cancer cells. The tumor suppressor cells inhibit the process of cell cycle proliferation and cell division. So, it is a wrong answer.

Option (c) is given as “proto-oncogenes; oncogenes”.
The proto-oncogenes are present in the normal cells and activate the process of cell cycle. The oncogenes are present in the cancerous cells and activate the process of cell signaling. So, it is a wrong answer.

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

Conclusion

The proto-oncogenes activate the process of cell division and cell proliferation in the normal cells, whereas the tumor suppressor genes inhibit the process of cell proliferation, cell cycle and division.

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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 20, Problem 1A

Summary Introduction

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

The proto-oncogenes are present inside the normal cells and initiate the process of cell cycle, division and mitosis. The tumor suppressor genes inhibit the process of cell division and proliferation of the cells. Therefore, option (d) is correct.

Explanation of Solution

Reason for the correct statement:

The proto-oncogenes synthesize a protein, which activates the process of cell cycle, proliferation and cell signaling. The tumor suppressor genes inhibit the process of cell cycle and proliferation.

Option (d) is given as “proto-oncogenes; tumor suppressor genes”.

“Normally in a noncancer cell, proto-oncogenes stimulate the cell cycle, and tumor suppressor genes inhibit the cell cycle”, it is the right answer.

Hence, option (d) is correct.

Reasons for the incorrect statements:

Option (a) is given as “tumor suppressor genes; oncogenes”.
The tumor specific genes inhibit the process of cell cycle and proliferation, whereas oncogenes activate the process of cell signaling in the cancerous cells. They are formed after the mutation of the proto-oncogenes. So, it is a wrong answer.

Option (b) is given as “oncogenes; tumor suppressor genes”.
The oncogenes activate the process of cell signaling in the cancer cells. The tumor suppressor cells inhibit the process of cell cycle proliferation and cell division. So, it is a wrong answer.

Option (c) is given as “proto-oncogenes; oncogenes”.
The proto-oncogenes are present in the normal cells and activate the process of cell cycle. The oncogenes are present in the cancerous cells and activate the process of cell signaling. So, it is a wrong answer.

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

Conclusion

The proto-oncogenes activate the process of cell division and cell proliferation in the normal cells, whereas the tumor suppressor genes inhibit the process of cell proliferation, cell cycle and division.

Answer 6

Chapter 20, Problem 1A

Summary Introduction

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

The proto-oncogenes are present inside the normal cells and initiate the process of cell cycle, division and mitosis. The tumor suppressor genes inhibit the process of cell division and proliferation of the cells. Therefore, option (d) is correct.

Explanation of Solution

Reason for the correct statement:

The proto-oncogenes synthesize a protein, which activates the process of cell cycle, proliferation and cell signaling. The tumor suppressor genes inhibit the process of cell cycle and proliferation.

Option (d) is given as “proto-oncogenes; tumor suppressor genes”.

“Normally in a noncancer cell, proto-oncogenes stimulate the cell cycle, and tumor suppressor genes inhibit the cell cycle”, it is the right answer.

Hence, option (d) is correct.

Reasons for the incorrect statements:

Option (a) is given as “tumor suppressor genes; oncogenes”.
The tumor specific genes inhibit the process of cell cycle and proliferation, whereas oncogenes activate the process of cell signaling in the cancerous cells. They are formed after the mutation of the proto-oncogenes. So, it is a wrong answer.

Option (b) is given as “oncogenes; tumor suppressor genes”.
The oncogenes activate the process of cell signaling in the cancer cells. The tumor suppressor cells inhibit the process of cell cycle proliferation and cell division. So, it is a wrong answer.

Option (c) is given as “proto-oncogenes; oncogenes”.
The proto-oncogenes are present in the normal cells and activate the process of cell cycle. The oncogenes are present in the cancerous cells and activate the process of cell signaling. So, it is a wrong answer.

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

Conclusion

The proto-oncogenes activate the process of cell division and cell proliferation in the normal cells, whereas the tumor suppressor genes inhibit the process of cell proliferation, cell cycle and division.

Answer 7

Chapter 20, Problem 1A

Summary Introduction

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Answer 8

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

The proto-oncogenes are present inside the normal cells and initiate the process of cell cycle, division and mitosis. The tumor suppressor genes inhibit the process of cell division and proliferation of the cells. Therefore, option (d) is correct.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Reason for the correct statement:

The proto-oncogenes synthesize a protein, which activates the process of cell cycle, proliferation and cell signaling. The tumor suppressor genes inhibit the process of cell cycle and proliferation.

Option (d) is given as “proto-oncogenes; tumor suppressor genes”.

“Normally in a noncancer cell, proto-oncogenes stimulate the cell cycle, and tumor suppressor genes inhibit the cell cycle”, it is the right answer.

Hence, option (d) is correct.

Reasons for the incorrect statements:

Option (a) is given as “tumor suppressor genes; oncogenes”.
The tumor specific genes inhibit the process of cell cycle and proliferation, whereas oncogenes activate the process of cell signaling in the cancerous cells. They are formed after the mutation of the proto-oncogenes. So, it is a wrong answer.

Option (b) is given as “oncogenes; tumor suppressor genes”.
The oncogenes activate the process of cell signaling in the cancer cells. The tumor suppressor cells inhibit the process of cell cycle proliferation and cell division. So, it is a wrong answer.

Option (c) is given as “proto-oncogenes; oncogenes”.
The proto-oncogenes are present in the normal cells and activate the process of cell cycle. The oncogenes are present in the cancerous cells and activate the process of cell signaling. So, it is a wrong answer.

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

Answer 12

Conclusion

The proto-oncogenes activate the process of cell division and cell proliferation in the normal cells, whereas the tumor suppressor genes inhibit the process of cell proliferation, cell cycle and division.

Answer 13

Ch. 20.1 - Descrihe the characteristics of cancer cells that...Ch. 20.1 - Prob. 2LO Ch. 20.1 - Prob. 3LO Ch. 20.1 - Prob. 1BTS Ch. 20.1 - Prob. 2BTS Ch. 20.1 - List the characteristics of cancer cells that...Ch. 20.1 - Describe how mutations in tumor suppressor genes...Ch. 20.1 - Prob. 3CYP Ch. 20.2 - Prob. 1LO Ch. 20.2 - Prob. 2LO

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Videos

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Answer to Problem 1A

Explanation of Solution

Want to see more full solutions like this?

Chapter 20 Solutions

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Videos

Introduction: The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.

Answer to Problem 1A

Explanation of Solution

Want to see more full solutions like this?

Chapter 20 Solutions

Introduction:

The proto-oncogenes are proteins which are present in the normal cell. These proteins activate the process of the cell cycle and division leading to the proliferation of the cells. The tumor suppressor proteins inhibit the cell cycle and proliferation of the cells.