Which of the following organelle of the eukaryotic cells are also called suicidal bags?

Option 3 : Lysosomes

The correct answer is Lysosomes.

• Lysosomes:
  • These are membrane-bound vesicular structures formed by the process of packaging in the Golgi apparatus.
  • These are also called ''Suicidal bags'' because of their phagocytic activity. Lysosome keeps the cell clean by digesting any foreign material as well as worn-out cell organelles.
  •  If any cell or cell organelle gets damaged, the lysosome digest the damaged cell or cell organelle by the application of hydrolytic enzymes (hydrolases – lipases, proteases, carbohydrates)

•  Golgi body
  • Cells synthesize a large proteins and lipids.
  • The Golgi apparatus is integral in modifying, sorting, and packaging these macro molecules for cell secretion.
  • The Golgi apparatus is an organelle found in most Eukaryotic cells.
  • It is also a major site of carbohydrate synthesis.
• Mitochondria
  • Mitochondria (sing.: mitochondrion), unless specifically stained, are not easily visible under the microscope.
  • The number of mitochondria per cell is variable depending on the physiological activity of the cells.
  • In terms of shape and size also, a considerable degree of variability is observed.
  • Typically it is sausage-shaped or cylindrical having a diameter of 0.2-1.0µm (average 0.5µm) and length 1.0-4.1µm.
  • Each mitochondrion is a double membrane-bound structure with the outer membrane and the inner membrane dividing its lumen distinctly into two aqueous compartments, i.e., the outer compartment and the inner compartment
  • Both mitochondria and plastid possess their own genetic material and ribosomes and thus, they are called as semi-autonomous organelles.
  • The mitochondrial DNA and plastid DNA possess genes which produce the proteins necessary for the functioning of mitochondria and plastids respectively.
• Chloroplast
  • The chloroplast is a double membrane-bound cell organelle.
  • Out of the two membranes, the inner membrane is relatively less permeable. (the outer membrane contains porins).
  • The space limited by the inner membrane is called the stroma.
  • Chloroplasts contain chlorophyll and carotenoid pigments which are responsible for trapping of light energy essential for photosynthesis.
  • The majority of chloroplasts are found in the mesophyll cells of the leaves.

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