NCERT Solutions for Class 9 Science Chapter 5
The Fundamental Unit of Life
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-65
Questions No-3
Why are lysosomes known as suicide bags?
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NCERT Solutions for Class 9 Science Chapter 5
The Fundamental Unit of Life
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-65
Questions No-3
Lysosomes are membrane-bound vesicular structures that contain powerful digestive enzymes. These enzymes are capable of breaking down any foreign food particle or microbes entering the cell. Sometimes, lysosomes can cause self-destruction of a cell by releasing these digestive enzymes within the cells. Hence, they are also known as ‘suicidal bags’.
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Lysosomes contain digestive enzymes for almost all types of organic materials. If their covering membrane breaks as it happens during injury to cell, the digestive enzymes will spill over the cell contents and digest the same. As lysosomes are organelles which on bursting can kill cells possessing them, they are called suicide bags.
Lysosomes – Known as “Suicide Bags”:
– Function: Lysosomes are cellular structures containing enzymes for breaking down waste materials, damaged organelles, and other unwanted substances within the cell.
– Role in Cell Death: During programmed cell death (apoptosis), lysosomes release their enzymes, causing the breakdown of cellular components.
– Nickname Significance: “Suicide bags” refers to this ability of lysosomes to participate in the orderly disassembly of cells during apoptosis, essentially ‘self-destructing’ the cell in a controlled manner.
– Impact: This nickname underscores the crucial role of lysosomes in cellular cleanup and their involvement in regulating cell death, either as part of the natural cell life cycle or under certain conditions.
In essence, the term highlights how lysosomes, by releasing their enzymes, contribute to the controlled breakdown of cellular structures during programmed cell death, akin to a cell’s ‘self-destruct’ mechanism.