Apentix/AP Biology/Unit 2: Cell Structure and Function/Question
AP Biologyeasymcq1 pt

Transport vesicles freshly budded from the endoplasmic reticulum approach the Golgi apparatus. At which surface do they unload their contents?

A.The cis face, the pole oriented toward the ER
B.The trans face, the pole aimed at the plasma membrane
C.The medial cisternae, skipping past both outer edges
D.Anywhere along the rim, since the stack lacks orientation

Explanation

Core Concept

The Golgi is polarized: its cis face points toward the ER and accepts incoming COPII-derived vesicles. Cargo then passes through successive cisternae, picking up modifications, before exiting at the trans face toward the plasma membrane, lysosomes, or secretion. This receiving-to-shipping directionality defines the organelle's organization.

Correct Answer

AThe cis face, the pole oriented toward the ER

More Unit 2: Cell Structure and Function practice questions

Try a random question →

Practice more AP Biology questions with full explanations

Practice Unit 2: Cell Structure and Function Questions →