Chapter 14. Vesicle-Mediated Protein Trafficking between the ER and cis-Golgi

Animation Activities

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Animation Activity 14-11: Vesicle-Mediated Protein Trafficking between the ER and cis-Golgi

1.

________ protein complexes are responsible for ________ transport from the ER to cis-Golgi.

COPII; retrograde

COPI; retrograde

COPII; anterograde

COPI; anterograde

V-SNARES; anterograde

Correct.

Incorrect.

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2.

Fusion of a vesicle to the membrane of either the ER or cis-Golgi is mediated directly by:

SNARE protein interactions on both the vesicle and ER/cis-Golgi membranes.

binding of soluble cargo proteins to membrane receptors.

COPI and COPII coat protein shedding.

release of soluble cargo proteins into the ER/cis-Golgi.

All of the above

Correct.

Incorrect.

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3.

What molecules are involved in vesicle formation in anterograde vesicle transport?

COPII coat proteins

V-SNARES

membrane cargo proteins

soluble cargo proteins

All of the above

Correct.

Incorrect.

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4.

Retrograde vesicle transport, mediated by COPI coat proteins, serves the function of:

relaying signaling information from the cell membrane to the ER.

recycling certain proteins from the cis-Golgi to ER.

recycling COP coat proteins.

allowing vesicle fusion with other vesicles to share cargo.

delivering soluble cargo proteins from the ER to the cis-Golgi.

Correct.

Incorrect.

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Chapter 14. Vesicle-Mediated Protein Trafficking between the ER and cis-Golgi

Introduction

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