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Protein Sorting and Golgi Apparatus Quiz

12 Questions

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Protein Sorting and Golgi Apparatus Quiz

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Questions and Answers

Which type of vesicles bud off from specialized, coated regions of membranes?

COPI-coated vesicles

Retromer-coated vesicles

Clathrin-coated vesicles (correct)

COPII-coated vesicles

Where do transport vesicles bud off from one compartment and fuse with another?

In the endoplasmic reticulum

In the Golgi apparatus

In the endocytic pathway

In the secretory pathway (correct)

What guides transport vesicles to their target membrane?

Rab proteins (correct)

Retromer proteins

COPII proteins

Clathrin proteins

Which step in the secretory pathway involves the vesicle fusing with the cell membrane?

Leaves the Golgi in a vesicle Signup and view all the answers

What is the function of COPII-coated transport vesicles?

Transport membranes from the ER to the Golgi Signup and view all the answers

What is the role of cargo receptors inside transport vesicles?

Ensure loading of specific cargoes Signup and view all the answers

Which model describes the maturation of cisternae from cis to trans together with cargo molecules in the Golgi?

Maturation model Signup and view all the answers

What is the function of COPI vesicles in the Golgi?

Bring ER proteins back from the Golgi Signup and view all the answers

What is the role of the KDEL sequence and KDEL receptor in vesicle formation?

Initiate vesicle formation for ER proteins Signup and view all the answers

Which type of proteins are transported through the nonselective constitutive secretory pathway?

Most other proteins directly to the cell surface Signup and view all the answers

What serves as the main destination tag for molecules at the Golgi?

Sugar coats Signup and view all the answers

What are the compartments of the Golgi involved in glycosylation steps?

Different cisternae Signup and view all the answers