Microbiology: An Evolving Science (Fourth Edition)
Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 10, Problem 3RQ
Summary Introduction

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The induction of lac operons by external lactose.

Introduction:

Lactose is a sugar found in milk. It is a disaccharide formed of glucose and galactose. Lactose acts as a great source of energy for organisms. It is metabolized and transported by lac operon. The lac operon consists of three lac genes that encode proteins responsible for the metabolization. The concentration of lactose is a key criterion to determine the level of transcription of the lac operon.

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