Biology 2010 Student Edition

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

Chapter 7, Cell Structure and Function - 7.3 - Cell Transport - 7.3 Assessment - Page 213: 2b


The two types of active transport are molecular and bulk transport.

Work Step by Step

Molecular transport is through the use of protein pumps located on the cell membrane. These pumps go against the concentration gradient. Bulk transport includes both endocytosis and exocytosis. Endocytosis is when a substance is taken into the cell. Forms of endocytosis are phagocytosis and pinocytosis. Exocytosis is when substances are excreted outside of the cell.
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