Chapter 10, Problem 19P

Interpretation Introduction

Interpretation:

The curve for non-mediated diffusion and facilitated transport should be identified in the given graph.

Concept Introduction:

Plasma membrane selectively allows movement of ions and molecules between the outside and inside of a cell. The movement of molecules simply through membrane is called non-mediated diffusion. For example, movements of non-polar, small molecules ammonia, water, and gases. The movement of molecules through transporters (either channels or pores) is facilitated diffusion. For example, transport of large, polar or charged molecules, such as glucose, sodium, and potassium ions.