What part of the cell secretes chemical substances and stores mucus and enzymes?

The Golgi apparatus is the part of the cell responsible for modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles. It plays a key role in the processing of proteins synthesized in the endoplasmic reticulum by receiving these proteins and lipids, attaching carbohydrates to them through glycosylation, and then converting them into vesicles that transport these substances to their final destinations, which can include secretion outside the cell.

Furthermore, the Golgi is integral to the storage and release of various chemical substances such as enzymes and mucus. This is particularly important in cells of glands, where secretion of mucus and enzymes is fundamental to their function. Through these mechanisms, the Golgi apparatus ensures that the cell can effectively manage the outputs necessary for various physiological processes.