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Lysosomes are _____ vesicular structures formed by the process of packaging in the _____ .
- a)membrane bound, Golgi apparatus
- b)non-membrane bound, Golgi apparatus
- c)membrane bound, ER
- d)non-membrane bound, ER
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Lysosomes are _____ vesicular structures formed by the process of pack...
Lysosomes are single membrane bound vesicles which contain hydrolytic enzymes. They are believed to be formed by the joint activity of ER and Golgi complex. Precursors of hydrolytic enzymes are synthesized at RER and are transferred to the forming face of Golgi complex. These precursors are then changed to enzymes. Enzymes are packed in larger vesicles and are pinched off at maturing face. These vesicles combine with endosomes to produce lusosomes.
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Lysosomes are _____ vesicular structures formed by the process of pack...
Lysosomes are membrane-bound vesicular structures formed by the process of packaging in the Golgi apparatus.
Explanation:
Lysosomes are organelles found in animal cells and some plant cells. They are membrane-bound vesicles that contain various hydrolytic enzymes. Lysosomes play a crucial role in the digestion and recycling of cellular waste materials, as well as in the degradation of macromolecules.
Formation of Lysosomes:
Lysosomes are formed through a process called packaging. This process occurs in the Golgi apparatus, which is another organelle involved in the modification, sorting, and packaging of proteins and lipids. The Golgi apparatus receives transport vesicles from the endoplasmic reticulum (ER), which is the site of protein synthesis and lipid metabolism.
The process of packaging in the Golgi apparatus involves the following steps:
1. Formation of Golgi vesicles: The Golgi apparatus receives transport vesicles containing newly synthesized proteins and lipids from the ER. These vesicles fuse with the Golgi membrane, releasing their contents into the Golgi lumen.
2. Protein modification and sorting: Within the Golgi apparatus, proteins and lipids undergo various modifications, such as glycosylation, phosphorylation, and sulfation. These modifications help to determine the final destination of the proteins.
3. Formation of lysosomes: The Golgi apparatus also plays a role in the formation of lysosomes. It packages hydrolytic enzymes, such as proteases, nucleases, and lipases, into vesicles known as lysosomes. These vesicles bud off from the Golgi membrane, forming mature lysosomes.
4. Fusion with endocytic vesicles: Lysosomes can also be formed by the fusion of endocytic vesicles with the Golgi-derived vesicles. Endocytic vesicles contain materials that have been taken up by the cell through endocytosis, such as extracellular proteins or damaged organelles. When these vesicles fuse with the Golgi-derived vesicles, they acquire lysosomal enzymes and become fully functional lysosomes.
In conclusion, lysosomes are membrane-bound vesicular structures formed by the process of packaging in the Golgi apparatus. The Golgi apparatus modifies, sorts, and packages proteins and lipids, including hydrolytic enzymes, into vesicles that eventually become lysosomes.
Explanation:
Lysosomes are organelles found in animal cells and some plant cells. They are membrane-bound vesicles that contain various hydrolytic enzymes. Lysosomes play a crucial role in the digestion and recycling of cellular waste materials, as well as in the degradation of macromolecules.
Formation of Lysosomes:
Lysosomes are formed through a process called packaging. This process occurs in the Golgi apparatus, which is another organelle involved in the modification, sorting, and packaging of proteins and lipids. The Golgi apparatus receives transport vesicles from the endoplasmic reticulum (ER), which is the site of protein synthesis and lipid metabolism.
The process of packaging in the Golgi apparatus involves the following steps:
1. Formation of Golgi vesicles: The Golgi apparatus receives transport vesicles containing newly synthesized proteins and lipids from the ER. These vesicles fuse with the Golgi membrane, releasing their contents into the Golgi lumen.
2. Protein modification and sorting: Within the Golgi apparatus, proteins and lipids undergo various modifications, such as glycosylation, phosphorylation, and sulfation. These modifications help to determine the final destination of the proteins.
3. Formation of lysosomes: The Golgi apparatus also plays a role in the formation of lysosomes. It packages hydrolytic enzymes, such as proteases, nucleases, and lipases, into vesicles known as lysosomes. These vesicles bud off from the Golgi membrane, forming mature lysosomes.
4. Fusion with endocytic vesicles: Lysosomes can also be formed by the fusion of endocytic vesicles with the Golgi-derived vesicles. Endocytic vesicles contain materials that have been taken up by the cell through endocytosis, such as extracellular proteins or damaged organelles. When these vesicles fuse with the Golgi-derived vesicles, they acquire lysosomal enzymes and become fully functional lysosomes.
In conclusion, lysosomes are membrane-bound vesicular structures formed by the process of packaging in the Golgi apparatus. The Golgi apparatus modifies, sorts, and packages proteins and lipids, including hydrolytic enzymes, into vesicles that eventually become lysosomes.
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