THE CELL
CELL COMMUNICATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Apoptosis
|
|
|
Catastrophism
|
|
|
Cytokinesis
|
|
|
Phagocytosis
|
Detailed explanation-1: -Answer and Explanation: Apoptosis (answer choice A) is known as programmed cell death.
Detailed explanation-2: -Definition. Apoptosis is the process of programmed cell death. It is used during early development to eliminate unwanted cells; for example, those between the fingers of a developing hand.
Detailed explanation-3: -Apoptosis is defined by the process of cell shrinkage, DNA fragmentation, and phagocytosis of apoptotic bodies by macrophages or neighboring cells.
Detailed explanation-4: -Apoptosis is the process of programmed cell death (PCD) that may occur in multicellular organisms. Biochemical events lead to characteristic cell changes (morphology) and death. These changes include blebbing, cell shrinkage, nuclear fragmentation, chromatin condensation, and chromosomal DNA fragmentation.
Detailed explanation-5: -Apoptosis occurs normally during development and aging and as a homeostatic mechanism to maintain cell populations in tissues. Apoptosis also occurs as a defense mechanism such as in immune reactions or when cells are damaged by disease or noxious agents (Norbury and Hickson, 2001).