EVERYDAY SCIENCE

Detailed explanation-1: -The Golgi apparatus modifies, sorts, and packages different substances for secretion out of the cell, or for use within the cell. The Golgi apparatus is found close to the nucleus of the cell, where it modifies proteins that have been delivered in transport vesicles from the RER.

Detailed explanation-2: -Proteins can also be modified by the addition of carbohydrates to the side chains of acceptor serine and threonine residues within specific sequences of amino acids (O-linked glycosylation) (see Figure 7.28). These modifications take place in the Golgi apparatus by the sequential addition of single sugar residues.

Detailed explanation-3: -Definition. A Golgi body, also known as a Golgi apparatus, is a cell organelle that helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell.

Detailed explanation-4: -In addition, the Golgi apparatus manufactures a variety of macromolecules on its own, including a variety of polysaccharides. The Golgi complex in plant cells produces pectins and other polysaccharides specifically needed by for plant structure and metabolism.

Detailed explanation-5: -The function of the Golgi apparatus is processing and packaging proteins that have exited the rough endoplasmic reticulum to be further transported inside and/or outside the cell. In plant cells, the Golgi body also serves as the site for the synthesis of complex polysaccharides.