Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 7, Cell Structure and Function - Assessment - 7.3 Cell Transport - Understand Key Concepts - Page 220: 19


The difference between active and passive transport is that active transport requires energy and passive transport does not.

Work Step by Step

Passive transport does not require energy because substances move passively from an area where their concentration is high to an area where their concentration is low. Active transport needs energy to operate because it moves substances against their concentrations gradients, meaning they move from an area of low concentration to an area of high concentration.
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