THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The cell’s DNA & organelles become fragemented, the cell shrinks & forms blebs, the cell’s parts are packaged in vesicles that are digested by cells like macrophages.
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The cell dies, it is lysed, its organelles are phagocytized, and its contents are recycled.
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The cell’s DNA and organelles become fragmented, the cell dies, and it’s phagocytized.
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The cell shrinks, dies, and the presence of its fragmented contents stimulate nearby cells to divide.
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Detailed explanation-1: -Apoptosis describes the orchestrated collapse of a cell characterised by membrane blebbing, cell shrinkage, condensation of chromatin, and fragmentation of DNA followed by rapid engulfment of the corpse by neighbouring cells.
Detailed explanation-2: -During apoptosis, the activated caspases cleave ICAD and release CAD, which forms homodimer and cleave linker DNA between necleosomes. The activation of caspases also triggers the release of Endo G from mitochondria into nucleus to cleave chromosomal DNA.
Detailed explanation-3: -Types of stress and damage that can lead the cell to apoptosis include damage to its DNA, oxygen deprivation, and other stresses that impair a cell’s ability to function.
Detailed explanation-4: -There are 4 stages of apoptosis: the initiation or stimulus for cell death, the active programmed cell death when the events become irreversible, phagocytosis of the dead cellular material, and inhibitory mechanisms of apoptosis.