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 9 - Microbial Genetics - Multiple-Choice and True-False Questions - Bloom's Levels 1 and 2: Remember and Understand - Page 265: 7

Answer

b. off, inducer

Work Step by Step

The lac operon is usually in the off position, and it is activated by an inducer molecule (lactose). Thus, the correct answer is option b.

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