Microbiology: A Systems Approach 4th Edition

by Cowan, Marjorie Kelly

Published by McGraw-Hill Education

ISBN 10: 0073402435

ISBN 13: 978-0-07340-243-7

Chapter 21 - Infectious Diseases Affecting the Respiratory System - Multiple-Choice and True-False Questions - Bloom's Levels 1 and 2: Remember and Understand - Page 667: 9

Answer

a. Streptolysin

Work Step by Step

The beta-hemolysis of blood agar is caused by streptolysin. It is a hemolytic exotoxin, which destroys the blood cells. Thus, the correct answer is option a.

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