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What route is used to export proteins from the cell?

What route is used to export proteins from the cell?

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A. Golgi apparatus → rough endoplasmic reticulum → plasma membrane
B. Rough endoplasmic reticulum → Golgi apparatus → plasma membrane
C. Golgi apparatus → lysosome → rough endoplasmic reticulum
D. Rough endoplasmic reticulum → lysosome → Golgi apparatus

This question is part of ib biology
Asked by Shefali, Last updated: Sep 17, 2020

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2 Answers

W. Pratt

W. Pratt

Want to learn new things and share my knowledge

W. Pratt
W. Pratt, Marketing Analyst, MBA, Lincoln

Answered Jan 31, 2019

Correct answer is option B (ER -> Golgi apparatus -> plasma membrane)
Newly synthesized protein pass through series of stops before it gets to where it is needed. The proteins enter a biosynthetic secretory pathway in the endoplasmic reticulum (ER) by crossing the ER membrane from the cytosol.

It is further transported from the ER to the golgi apparatus. The golgi apparatus is the sorting and dispatching station for the products of the ER which are packed in vesicles. The golgi apparatus distributes the many proteins and lipids that it receives from the ER and then modifies the plasma membrane, lysosomes and secretory vesicles.

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John Smith

John Smith

John Smith
John Smith

Answered Jan 09, 2017

Rough endoplasmic reticulum → Golgi apparatus → plasma membrane
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