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Option 4 : Lysosomes
The correct answer is Lysosomes.
- A lysosome is a membrane-bound cell organelle that contains digestive enzymes.
- Lysosomes are involved with various cell processes.
- They break down excess or worn-out cell parts.
- Besides degradation of polymers, the lysosome is involved in other processes, including secretion, plasma membrane repair, apoptosis, cell signalling, and energy metabolism.
- They may be used to destroy invading viruses and bacteria.
- If the cell is damaged beyond repair, lysosomes can help it to self-destruct in a process called programmed cell death, or apoptosis.
- The lysosomes are the cell’s “garbage disposal.
- ” In-plant cells, the digestive processes take place in vacuoles.
- Vacuoles:
- A vacuole is a membrane-bound cell organelle.
- In animal cells, vacuoles are generally small and help sequester waste products.
- In-plant cells, vacuoles help maintain water balance.
- Sometimes a single vacuole can take up most of the interior space of the plant cell.
- Endoplasmic reticulum:
- The endoplasmic reticulum is, in essence, the transportation system of the eukaryotic cell, and has many other important functions such as protein folding.
- It is a type of organelle made up of two subunits – rough endoplasmic reticulum, and smooth endoplasmic reticulum.
- Vesicles:
- In cell biology, a vesicle is a structure within or outside a cell, consisting of liquid or cytoplasm enclosed by a lipid bilayer.
- Vesicles form naturally during the processes of secretion, uptake and transport of materials within the plasma membrane.
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