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urea cycle

American  

noun

Biochemistry.
  1. a metabolic process by which ammonia derived from amino acids is converted into urea in the liver.


urea cycle British  

noun

  1. the sequence of metabolic reactions leading in vertebrates to the synthesis of urea

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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They suggested ammonia testing may have identified he was suffering from a urea cycle disorder, such as OTC, the court heard.

From BBC • Jun. 27, 2023

The urea cycle utilizes five intermediate steps, catalyzed by five different enzymes, to convert ammonia to urea, as shown in Figure 32.13.

From Textbooks • Jun. 9, 2022

In terms of evolution, why might the urea cycle have evolved in organisms?

From Textbooks • Jun. 9, 2022

In mammals, the urea cycle converts ammonia to urea.

From Textbooks • Jun. 9, 2022

Prior to the urea cycle, ammonium ions are produced from the breakdown of amino acids.

From Textbooks • Jun. 19, 2013

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