Apentix/AP Biology/Unit 2: Cell Structure and Function/Question
AP Biologymediummcq1 pt

Proteins synthesized in the rough ER travel next to which structure for modification, sorting, and dispatch?

A.The nucleolus, where proteins are folded a second time
B.The smooth endoplasmic reticulum for lipid attachment
C.Lysosomes directly, with no intermediate station
D.The Golgi apparatus, entering at the cis face and exiting at the trans face

Explanation

Core Concept

Many proteins synthesized through the rough endoplasmic reticulum are transported in vesicles to the Golgi apparatus, where they can be modified, sorted, and packaged for delivery to other destinations. The important AP-level relationship is the coordinated endomembrane pathway from ER to Golgi to final destination; detailed Golgi-face terminology is not needed here.

Correct Answer

DThe Golgi apparatus, entering at the cis face and exiting at the trans face

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