Microbiology: Principles and Explorations 9th Edition

Published by Wiley
ISBN 10: 1-11874-316-4
ISBN 13: 978-1-11874-316-4

Chapter 6 - Growth and Culturing of Bacteria - Self Quiz - Page 178: 15



Work Step by Step

A bacterial medium that contains 20 grams of beef extract and 10 grams of sodium chloride dissolved in 1 liter of water is not a defined medium. It is considered a chemically nondefined medium because it involves beef extract, for which the chemical composition varies from batch to batch.
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