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Questions and Answers
Lysosomes are often referred to as the 'clean-up crew' of the cell due to their role in digesting foreign materials.
Lysosomes are often referred to as the 'clean-up crew' of the cell due to their role in digesting foreign materials.
True (A)
The enzymes found in lysosomes are primarily produced by the Golgi apparatus.
The enzymes found in lysosomes are primarily produced by the Golgi apparatus.
False (B)
Lysosomes work optimally in a neutral pH environment.
Lysosomes work optimally in a neutral pH environment.
False (B)
When a cell gets damaged, lysosomes can burst and release their enzymes, which can lead to cell death.
When a cell gets damaged, lysosomes can burst and release their enzymes, which can lead to cell death.
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Lysosomes are membrane-bound structures that contain lipid molecules for cellular energy.
Lysosomes are membrane-bound structures that contain lipid molecules for cellular energy.
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Study Notes
Lysosomes Overview
- Membrane-bound organelles with a spherical, sac-like structure.
- Filled with digestive enzymes produced by the rough endoplasmic reticulum (RER).
Functionality
- Act as a waste disposal system for the cell, breaking down complex substances into simpler ones.
- Responsible for the digestion of foreign materials such as bacteria, food particles, and viruses.
- Often referred to as "suicide bags" of the cell due to their role in cellular self-digestion.
Enzyme Characteristics
- Contain hydrolytic enzymes that function optimally in an acidic environment.
- Enzymes facilitate intracellular digestion through processes like phagocytosis, where the cell consumes damaged or obsolete components.
Cellular Response
- In case of cell damage, lysosomes may rupture, releasing digestive enzymes and leading to cell breakdown.
Composition
- Composed of proteins, lipids, and enzymes specifically designed for hydrolysis.
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