Chapter 14, Problem 40A

Summary Introduction

To differentiate:

Between the active transport and diffusion.

Introduction:

Active transport is described as the movement of particles from a low to a high concentration region. Diffusion is described as the movement of particles from a region of high concentration to a region of low concentration.

Explanation of Solution

In active transport the movement of particles takes place from a low to high concentration gradient. Whereas, in diffusion, the movement of particles takes place from a high to low concentration gradient. The substances that are transported through active transport include transport of glucose from the gut to the intestine, passage of mineral ions into the roots of the plants. Diffusion process does not require energy. Whereas, active transport requires expenditure of ATP.