Transporters, Channels, and Pumps
1. Fatty acids enter the cells lining the small intestine by:

A. Simple diffusion

B. Facilitated diffusion

C. Active transport

2. The PepT is a H+/peptide antiporter located in the small intestine. It has
which of the following characteristics?

A. requires ATP for activity

B. exhibits maximal transport when saturated

C. requires H+ and peptides for activity

D. B and C

E. A, B, and C

Answer 1: A. Simple diffusion

Answer 2: D. B and C