
Concept explainers
To determine the odd term:
Among nitrogen fixation, endospore, and nucleoid.
Introduction:
Pathogens are the organisms that are able to infect a host organism and cause disease. The bacteria and the viruses are such pathogens. Bacteria are the prokaryotic organism, that can survive independently and inside the body of the organism. Besides as aa pathogen, bacteria have other lose in ecosystem too, such as nitrogen fixation, prey for smaller organism, etc.

Explanation of Solution
In nitrogen fixation, the bacteria fix the nitrogen in the oil by
Chapter 18 Solutions
Biology Illinois Edition (Glencoe Science)
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