Question

1. There are three major types of membrane proteins that facilitate movement of molecules into and out of cells: channel proteins, carrier proteins and protein pumps. Which of the three classes require energy to perform their function?

A. Protein pumps require energy to function

B. Channel proteins and carrier proteins require energy to function

C. None of them require energy to function

D. They all use energy to function

2. For a newly synthesized protein destined for secretion for the cell, pick the correct order of transit through the cell

		rough ER - cis Golgi - trans Golgi - secretory vesicle - plasma membrane
		cis Golgi - trans Golgi - rough ER - secretory vesicle - plasma membrane
		smooth ER - rough ER - trans Golgi - cis Golgi - secretory vesicle - plasma membrane
		trans Golgi - rough ER - cis Golgi - plasma membrane - secretory vesicle

Answer 1