Question

Which of the following statements is incorrect about the golgi apparatus?
(a) It helps in recycling of the plasma membrane, pinched off by pinocytosis and phagocytosis.
(b) Secretion is the main function of Golgi complex (c) It helps in glycosidation and glycosylation (d) Golgi body helps in animal cytokinesis

Answer 1

Hint: It was first observed by Camilo Golgi. They are present in different structures such as flat, disc-shaped, or cisternae of 0.5-1.0 micrometers. The Golgi apparatus is an organelle found in most eukaryotic cells and it is also a part of the endomembrane system.

Complete answer:
- Golgi apparatus as an organelle has an important role in the storage, packaging, and secretion of certain cell products. It is generally involved in the formation of lysosomes and other enzyme-containing cellular inclusions. Additionally, it is involved in the formation of secretory granules in cells such as those found in the pancreas, pituitary and mammary glands, and mucous-secreting glands of the intestine, and in many other cell types.
- Glycosylation is a significant modification of protein and lipid, and most glycosylation reactions occur in the Golgi.
- Process of cytokinesis takes place in Golgi bodies in animals.

Additional information:
Some additional functions of the Golgi apparatus are as follows:
- Absorption of compounds: Golgi apparatus acts as a condensation membrane for the concentration of products. These products can be lipids, yolk, bile compounds, enzymes, and hormones, etc.
- Production of hormones: Golgi body in endocrine cells helps in the secretion of hormones.
- Aid in the formation of plant cell walls: Golgi bodies of plant cells synthesize all types of polysaccharides such as pectin, hemicellulose, and microfibrils of a-cellulose.
Therefore the first statement (option a) regarding the function of the Golgi apparatus is incorrect.

So, the correct answer is option (a).

Note:
Golgi reactions involve the addition of sugar residues to membrane proteins and secreted proteins whereas recycling of the plasma membrane by phagocytosis and pinocytosis takes place through lysosome.