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Chapter 9: Q. 16 (page 251)

Apoptosis can occur in a cell when the cell is ________________.

a. damaged

b. no longer needed

c. infected by a virus

d. all of the above

Short Answer

Expert verified

The correct option is d.

Step by step solution

01

Introduction 

Apoptosis is also known as programmed death of the cell.

02

Step 2. Explanation for Correct option

Apoptosis allows a living cell to die in a supervised manner that avoids the secretion of potentially damaging substances from inside the cell.

03

Step 2. Explanation for Incorrect options

Option a is incorrect because apoptosis can be initiated not only by damaged cells but also by virus-infected cells and cells which are no longer needed.

Option b is incorrect because apoptosis can be initiated not only by cell that are no longer needed but also by virus infected cells and damaged cell.

Option c is incorrect because apoptosis can be initiated not only by virus infected cell but also by damaged cells and cells which are no longer needed.

Option d is correct because apoptosis can be initiated by various ways such as when cell is no longer needed, when cell is damaged and when cell is infected by a virus.

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