Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 25, Problem 3Q
Summary Introduction
To review:
The bacteria, which can improve the productivity of an aquatic ecosystem where small amounts of ammonium are added.
Introduction:
Phosphorus and ammonia are essential nutrients required for the growth of the aquatic ecosystem. In aquatic ecosystem, to increase the productivity, ammonium can be used. The aquatic organisms get required nitrogen for their growth from this dissolved ammonium.
The table given below gives details of characteristics of four bacteria:
Name of Bacteria | Clostridium novyi | Thermus aquaticus | Paracoccus denitrificans | Trichodesmium thiebautii |
Characteristics | ||||
Obligate anaerobic | Obligate aerobic | Facultative anaerobic | Facultative anaerobic | |
Gram status | + | – | – | – |
Optimal temperature (°C) | 10–40 | 50–80 | 5–30 | 10–30 |
Typical habitat | Terrestrial | Aquatic | Aquatic | Aquatic |
Miscellaneous | Chemotroph | Denitrifier | Nitrogen fixer |
°C, Degree Celsius; (+), positive; (–), negative.
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Chapter 25 Solutions
Life: The Science of Biology
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