Chapter 1, Problem 15P

Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book.

Intracellular Transport of Proteins The endoplasmic reticulum (HR) is a site of protein synthesis. Proteins made by ribosomes associated with the ER may pass into the EH membrane or enter the lumen of the HR. Devise a pathway by which:

1. a plasma membrane protein may reach the plasma membrane.
2. a secreted protein may be deposited outside the cell. (Section 1.5)