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In anaerobic respiration, what will happen if a bacterium uses nitrates as the terminal electron acceptors? nitrogenlaxation O nitrification O denitrification O both nitrogen fixation and nitrification

In anaerobic respiration, what will happen if a bacterium uses nitrates as the terminal electron acceptors? nitrogenlaxation O nitrification O denitrification O both nitrogen fixation and nitrification

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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**Question:** In anaerobic respiration, what will happen if a bacterium uses nitrates as the terminal electron acceptors? **Options:** - ○ nitrogen fixation - ○ nitrification - ● denitrification - ○ both nitrogen fixation and nitrification **Explanation:** The question addresses anaerobic respiration in bacteria using nitrates as terminal electron acceptors. The correct answer is "denitrification," which is a process where bacteria convert nitrates (NO₃⁻) into nitrogen gas (N₂), thus reducing the nitrate to a gaseous form. This process is an essential part of the nitrogen cycle, removing excess nitrates from ecosystems.
Transcribed Image Text:**Question:** In anaerobic respiration, what will happen if a bacterium uses nitrates as the terminal electron acceptors? **Options:** - ○ nitrogen fixation - ○ nitrification - ● denitrification - ○ both nitrogen fixation and nitrification **Explanation:** The question addresses anaerobic respiration in bacteria using nitrates as terminal electron acceptors. The correct answer is "denitrification," which is a process where bacteria convert nitrates (NO₃⁻) into nitrogen gas (N₂), thus reducing the nitrate to a gaseous form. This process is an essential part of the nitrogen cycle, removing excess nitrates from ecosystems.
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