GLUT- 1 Is an Example of What

Multiple Choice

GLUT- 1 is an example of what?

A) a protein that is toxic to cells because it opens channels in membranes
B) a membrane- bound pump that moves large molecules against a gradient by using ATP
C) a recognition protein that identifies cells as belonging to the body
D) a transport protein that facilitates diffusion of a large molecule across cell membranes