Prescott's Microbiology
Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Chapter 28.1, Problem 2.3CC
Summary Introduction

The growth or development of all living organisms depends upon the obtainability of mineral nutrients. Nitrogen is a mineral and also a crucial constituent of the bodies of all the living organisms as the nitrogen atoms are present in DNA and all proteins. Nitrogen occurs in many forms. In addition, it is cycled continuously by a wide range of bacteria. The cycling of nitrogen in various forms is considered as a complex process and it involves five steps. They are nitrogen fixation, nitrification, assimilation, ammonification, and denitrification.

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