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Question

Select the correct option for types of lysosomes.


A
P - Primary lysosome ; Q - Residual body ; R - Digestive vacuole ; S - Autophagosome
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B
P - Autophagosome ; Q - Primary lysosome ; R - Residual body ; S - Secondary lysosome
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C
P - Primary lysosome ; Q - Digestive vacuole ; R - Residual body ; S - Autophagic vacuole
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D
P - Residual body ; Q - Digestive vacuole ; R - Primary lysosome ; S - Autophagosome
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Solution

The correct option is C P - Primary lysosome ; Q - Digestive vacuole ; R - Residual body ; S - Autophagic vacuole
Lysosomes are an important cellular organelle that receive and degrade macromolecules from the secretory, endocytic, autophagic, and phagocytic membrane-trafficking pathways.
- Primary lysosome contains inactive enzymes
- Secondary lysosome or digestive vacuole is formed by fusion of primary lysosome with phagocytic vesicle. It contains active enzymes.
- Residual bodies are formed after digestion. They contain undigested products.
- Autophagic vacuoles / autophagosome is formed by fusion of old organelle and lysosome and it helps in apoptosis.

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