Microbiology: An Introduction, 11th Edition

Published by Benjamin Cummings
ISBN 10: 0321733606
ISBN 13: 978-0-32173-360-3

Chapter 27 - Environmental Microbiology - Study Questions - Review - Page 797: 3d

Answer

$H_{2}S$

Work Step by Step

In the sulfur cycle, microbes degrade organic sulfur compound such as amino acids to release $H_{2}S$ which can be oxidized by Thiobacillus to $SO_{4}^{2-} $. This ion can be assimilated into amino acids by plants and bacteria or reduced into $H_{2}S$
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