HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The rough ER produces proteins for use within the cell
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The Golgi apparatus produces proteins for use outside the cell
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Proteins are modified in secretory vesicles
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Secretory vesicles carry proteins for exocytosis
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Detailed explanation-1: -Endoplasmic Reticulum, Ribosomes, and Golgi Apparatus. Rough endoplasmic reticulum (RER), smooth endoplasmic reticulum (SER), and Golgi complexes are abundant in mammalian hepatocytes (see Figs.
Detailed explanation-2: -Acinar cells of exocrine glands are highly specialized for producing, storing, and discharging secretory proteins for use on surfaces that represent interfaces between the organism and the surrounding environment.
Detailed explanation-3: -Proteins synthesized by the rough ER include the prominent milk protein casein, and whey proteins. These proteins are packaged into secretory vesicles or large micelles and travel through the Golgi network before fusing with the plasma membrane, releasing their contents into milk ducts.
Detailed explanation-4: -COPII-coated vesicles transport cargo proteins from the ER to the Golgi; COPI-coated vesicles transport cargo in the retrograde direction (from the cis-Golgi back to the ER) and between Golgi cisternae; and clathrin-coated vesicles form from the plasma membrane and the TGN to fuse with endosomes or lysosomes (Fig.