What is Golgi apparatus?

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Golgi apparatus first described by camelio Golgi apparatus consists of a set of membrane bounded fluid filled vesicles it has an extensive network near the nucleus in the animal cell it is absent in bacteria blue green algae and RBC of mammal and animal the Golgi apparatus asses from the membrane of sex.

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Golgi appratus

Answer

A complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport is known as golgi apparatus . Golgi apparatus is also known by the name of golgi complex or golgi body .

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Golgi Apparatus: Structure and Function

The Golgi apparatus, also known as the Golgi complex or Golgi body, is a vital organelle found in eukaryotic cells. It was named after Camillo Golgi, an Italian physician, and biologist who first described it in the late 19th century. This cellular structure plays a crucial role in the sorting, modifying, packaging, and transporting of proteins and lipids within the cell.

Structure:
The Golgi apparatus is composed of a series of stacked, flattened membranous sacs called cisternae. These cisternae are interconnected and are arranged in parallel, forming a structure similar to a stack of pancakes. Each stack of cisternae is surrounded by vesicles, which are small membrane-bound sacs that transport molecules to and from the Golgi apparatus. The Golgi apparatus is typically located near the nucleus and is closely associated with the endoplasmic reticulum (ER), another important organelle involved in protein synthesis.

Function:
The Golgi apparatus performs several essential functions within the cell:

1. Protein Modification: One of the primary functions of the Golgi apparatus is to modify proteins synthesized in the endoplasmic reticulum. These modifications include the addition of carbohydrate chains (glycosylation), phosphorylation, and sulfation. These modifications are crucial for the proper folding, stability, and function of proteins.

2. Protein Sorting and Packaging: The Golgi apparatus sorts and packages proteins into vesicles for transport to their proper destinations within the cell. It acts as a central sorting station, receiving proteins from the ER and determining their final destinations, which may include other organelles or the cell membrane.

3. Lipid Synthesis: The Golgi apparatus is involved in the synthesis of lipids, such as phospholipids and cholesterol. It also helps in the assembly of lipoproteins, which are essential for the transport of lipids in the bloodstream.

4. Formation of Lysosomes: Lysosomes, which are membrane-bound organelles involved in intracellular digestion, are formed in the Golgi apparatus. It packages enzymes into vesicles called lysosomes, which are responsible for breaking down waste materials and cellular debris.

5. Secretion: The Golgi apparatus plays a crucial role in the secretion of various substances from the cell. It packages proteins, hormones, and enzymes into vesicles that fuse with the cell membrane, releasing their contents outside the cell through a process called exocytosis.

In summary, the Golgi apparatus is a complex organelle involved in protein modification, sorting, packaging, lipid synthesis, and secretion. Its intricate structure and functions contribute to the proper functioning and organization of eukaryotic cells.

Similar Class 9 Doubts

Who discovered golgi apparatus?

animal cells have a single highly complex and prominent Golgi apparatus and plant cells have many simpler units of Golgi apparatus , called dictyosome

Who discovered Golgi apparatus a.Robert Hooke b.Camillo Golgi c.Robert Brown d.Helin Golgi?

Explain Golgi apparatus?

Golgi apparatus

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