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the claim

Living organisms excrete nitrogenous wastes to maintain metabolic homeostasis.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Living organisms excrete nitrogenous wastes such as urea and ammonia to maintain metabolic and internal homeostasis.

The analysis

The retrieved papers consistently demonstrate across various species—including microorganisms, fish, invertebrates, and mammals—that the excretion and clearance of nitrogenous wastes are fundamental mechanisms for maintaining metabolic, acid-base, and ionic homeostasis.

Evidence for · 8
Recorded source metadata

N Yoshida, E P Camargo. Ureotelism and ammonotelism in trypanosomatids. 1978. https://doi.org/10.1128/jb.136.3.1184-1186.1978

Demonstrates that trypanosomatids excrete nitrogenous wastes like urea and ammonia to manage physiological processes.

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More for · 7
Recorded source metadata

F. I. Iftikar, M. Patel, Y. K. Ip, C. M. Wood. The influence of feeding on aerial and aquatic oxygen consumption, nitrogenous waste excretion, and metabolic fuel usage in the African lungfish, Protopterus annectens. 2008. https://doi.org/10.1139/z08-052

Examines nitrogenous waste excretion alongside metabolic fuel usage in lungfish.

Recorded source metadata

David H Evans, Peter M Piermarini, Keith P Choe. The multifunctional fish gill: dominant site of gas exchange, osmoregulation, acid-base regulation, and excretion of nitrogenous waste.. 2005. https://doi.org/10.1152/physrev.00050.2003

Highlights the fish gill as a primary site for nitrogenous waste excretion in maintaining homeostasis.

Recorded source metadata

Martine G E Knol, Vera C Wulfmeyer, Roman-Ulrich Müller, Markus M Rinschen. Amino acid metabolism in kidney health and disease.. 2024. https://doi.org/10.1038/s41581-024-00872-8

Describes how renal amino acid metabolism and nitrogen clearance act as a central hub for metabolic homeostasis.

Recorded source metadata

Biff F Palmer, Deborah J Clegg. Starvation Ketosis and the Kidney.. 2021. https://doi.org/10.1159/000517305

Discusses how the body adapts nitrogen excretion during starvation to maintain homeostasis.

Recorded source metadata

Dirk Weihrauch, Garett Joseph, Garett J P Allen. Ammonia excretion in aquatic invertebrates: new insights and questions.. 2018. https://doi.org/10.1242/jeb.169219

Notes that invertebrates utilize ammonia excretion and homeostasis strategies to survive diverse aquatic environments.

Recorded source metadata

Matthew Nitzahn, Gerald S Lipshutz. CPS1: Looking at an ancient enzyme in a modern light.. 2020. https://doi.org/10.1016/j.ymgme.2020.10.003

Explains how the mammalian urea cycle siphons catabolic waste nitrogen into urea for excretion to prevent toxicity and maintain homeostasis.

Recorded source metadata

Rafael M Duarte, Chris M Wood, Adalberto L Val, D Scott Smith. Physiological protective action of dissolved organic carbon on ion regulation and nitrogenous waste excretion of zebrafish (Danio rerio) exposed to low pH in ion-poor water.. 2018. https://doi.org/10.1007/s00360-018-1169-y

Investigates the nitrogenous waste excretion of zebrafish to assess ionoregulatory homeostasis.

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first checked01 Aug 2026
judged → SUPPORTED · 8501 Aug 2026
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