NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Define apoptosis.
A
Cell repair
B
Programmed cell death
C
Protein synthesis
D
DNA replication
Explanation: 

Detailed explanation-1: -(A-pop-TOH-sis) A type of cell death in which a series of molecular steps in a cell lead to its death. This is one method the body uses to get rid of unneeded or abnormal cells. The process of apoptosis may be blocked in cancer cells. Also called programmed cell death.

Detailed explanation-2: -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-3: -Apoptosis is a form of programmed cell death, or “cellular suicide.” It is different from necrosis, in which cells die due to injury. Apoptosis is not the only form of programmed cell death, but it is the form we understand best.

Detailed explanation-4: -The process of programmed cell death may be blocked in cancer cells. Also called apoptosis.

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