NEET UG » NEET UG Study Material » Biology » Structure of Golgi Body

Structure of Golgi Body

The Golgi apparatus, also known as the Golgi complex or Golgi body, is a membrane-bound organelle found in eukaryotic cells that are made up of a series of flattened, stacked pouches known as furrows.

Golgi bodies are complex structures in the cytoplasm that are involved in a variety of cell activities such as polysaccharide synthesis, storage of cellular synthesised substances (proteins), formation of secretory vesicles, and membrane differentiation. They are tubular and apple-like in structure, but unlike the ER, they are parallel-arranged, flattened, membranous vesicles devoid of ribosomes.

Camillo Golgi was first mentioned Golgi in 1898. Granulocytes can be found in nearly every eukaryotic cell. Some cells mature in tubules, such as corpuscles, sperm cells of Bryophyta and Pteridophyta, mature spermatozoa, and R. B. Cs. I don’t have any. These are known as dictyosomes in plant cells and Golgi Cars in animal cells.

What are Golgi bodies or Golgi apparatus?

The Golgi apparatus, also known as the Golgi complex or Golgi body, is a membrane-bound organelle found in eukaryotic cells (cells with clearly defined nuclei) that are made up of a series of flattened, stacked pouches known as furrows. The Golgi apparatus transports modify, and packages proteins and lipids in vesicles for delivery to specific sites. this is found in the cytoplasm, near the cell nucleus, and next to the endoplasmic reticulum. Plant cells may have hundreds of Golgi apparatuses, whereas many cell types have only one or two.

At some point during their maturation, secretory proteins and glycoproteins, cell membrane proteins, lysosomal proteins, and some glycolipids all pass through the Golgi apparatus. Much of the cell wall material in plant cells also pass through the Golgi.

Structure of Golgi body diagram

The Golgi apparatus is structurally polarised, with three primary compartments located between the “cis” and “trans” faces. These faces differ biochemically, and the enzymatic content of each segment varies significantly. The membranes on the cis face are generally thinner than those on the other faces.

The Golgi apparatus is made up of four to eight cisternae in most organisms, but in some single-celled organisms, it can have up to 60 cisternae. Matrix proteins hold the cisternae together, and cytoplasmic microtubules support the entire Golgi apparatus. The apparatus’s three primary compartments are known as “cis” (cisternae closest to the endoplasmic reticulum), “medial” (cisternae central layers), and “trans” (cisternae farthest from the endoplasmic reticulum).

Goji coplanus has three distinct components in animal cells

  1. Cystic Flattener or Flattener Sasar Casteel – These are elongated tubular flattened cells with smooth membranes in the form of flats. They can have up to ten numbers. They are parallel, with each cistern slightly curved (Cved). Its convex plane is known as the Forming face, and its concave plane is known as the Maturing face. Each system is 200 – 300A apart and 200 – 300A wide. separate from each other Each cisterna is made up of two membranes separated by a 520A version. 
  2. Golgian arteries (CGolgian Vacoles) – These are large noncircular stripes found on the instrument’s appendage. These are formed by the flattened corpuscles extending. These are filled with a sachan or granular substance.
  3. Basics groups -These are vesicles that are similar to 60 diameter dots (Droplets). It’s got a convex kg: Farmiri lace is associated with the ShuiCccky plane. These are linked together by perforated composition.

The function of the Golgi body

  1. Suppression: Through its cis part, the Golgi apparatus receives various substances from the endoplasmic reticulum. The enzyme glycosyltransferase chemically modifies these substances. This is known as glycosylation of proteins and lipids.
  2. Making Lysosomes: The maturing face of the Golgi body, which is rich in acid phosphatase, produces lysosomes.
  3. Protein separation: All secretory proteins are transported to the Golgi apparatus first. The Golgi body then transports them to their final destinations, such as lysosomes or the plasma membrane.
  4. Complex polysaccharide synthesis: The Golgi body in plants synthesises complex polysaccharides that are used in plant cell walls.
  5. O-linked glycosylation: O-linked glycosylation occurs in Golgi complex proteins. Which glucose is typically combined with the amino acids threonine and serine found in proteins.
  6. Acrosome formation: The acrosome of sperm is formed by conversion to the Golgi body.
  7. Formations of Phragmoplasts: During plant cell division, phragmoplast is formed by the fusion of Golgi body vesicles.
  8. Cortical granule formation: The Golgi body aids in the formation of the egg’s cortical granules.

Conclusion

Structure of Golgi body Introduction Golgi bodies are complex structures in the cytoplasm that are involved in a variety of cell activities such as polysaccharide synthesis, storage of cellular synthesised substances, formation of secretory vesicles, and membrane differentiation. The Golgi apparatus, also known as the Golgi complex or Golgi body, is a membrane-bound organelle found in eukaryotic cells (cells with clearly defined nuclei) that are made up of a series of flattened, stacked pouches known as furrows. The Golgi apparatus transports modify, and packages proteins and lipids in vesicles for delivery to specific sites. this is found in the cytoplasm, near the cell nucleus, and next to the endoplasmic reticulum.

faq

Frequently Asked Questions

Get answers to the most common queries related to the NEET UG Examination Preparation.

What is the truth about the Golgi apparatus's structure?

Ans. It is widely distributed in the cytosol. It is connected to the outer nuclear membrane. It has an inner membran...Read full

Explain the function of Golgi bodies and lysosomes in the cell.

Ans. The Golgi apparatus’s function is to process and bundle macromolecules such as proteins and lipids as the...Read full

How are proteins transported through the Golgi apparatus?

Ans. Proteins and lipids move in the cis-to-trans direction through the Golgi stack. This movement could be caused b...Read full

Is it true that all proteins pass through the Golgi?

Ans. The majority of proteins are then transported in membrane vesicles to the Golgi apparatus. Some proteins, on th...Read full