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ne nitrogen fixation and identify the key enzyme involved. Additionally explain how and why N fixing legumes minimize the concentration of 02 in the root nodules

ne nitrogen fixation and identify the key enzyme involved. Additionally explain how and why N fixing legumes minimize the concentration of 02 in the root nodules

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Text Transcription:** Define nitrogen fixation and identify the key enzyme involved. Additionally explain how and why N fixing legumes minimize the concentration of O₂ in the root nodules. **Explanation for Educational Context:** This text addresses the concept of nitrogen fixation, a crucial process in the nitrogen cycle where atmospheric nitrogen (N₂) is converted into ammonia (NH₃), a form usable by plants. The key enzyme involved in this process is nitrogenase. Furthermore, it touches on the adaptation of nitrogen-fixing legumes, which create specific conditions in root nodules to minimize oxygen concentration. This is necessary because the nitrogenase enzyme is highly sensitive to oxygen. By maintaining a low oxygen environment, these plants ensure the effectiveness of nitrogen fixation, thereby enhancing their growth and soil fertility.
Transcribed Image Text:**Text Transcription:** Define nitrogen fixation and identify the key enzyme involved. Additionally explain how and why N fixing legumes minimize the concentration of O₂ in the root nodules. **Explanation for Educational Context:** This text addresses the concept of nitrogen fixation, a crucial process in the nitrogen cycle where atmospheric nitrogen (N₂) is converted into ammonia (NH₃), a form usable by plants. The key enzyme involved in this process is nitrogenase. Furthermore, it touches on the adaptation of nitrogen-fixing legumes, which create specific conditions in root nodules to minimize oxygen concentration. This is necessary because the nitrogenase enzyme is highly sensitive to oxygen. By maintaining a low oxygen environment, these plants ensure the effectiveness of nitrogen fixation, thereby enhancing their growth and soil fertility.
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The biological compounds need nitrogen and this nitrogen is very much important for protein structure and the atmospheric nitrogen is the only source of the nitrogen that is present within the body. But the organism can't absorb the atmospheric nitrogen directly and this atmospheric nitrogen must be converted into organic form before the absorption.

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