Krebs cycle

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noun Biochemistry.

a cycle of enzyme-catalyzed reactions in living cells that is the final series of reactions of aerobic metabolism of carbohydrates, proteins, and fatty acids, and by which carbon dioxide is produced, oxygen is reduced, and ATP is formed.

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Also called citric acid cycle, tricarboxylic acid cycle.

Origin of Krebs cycle

First recorded in 1940–45; after H.A. Krebs

Words nearby Krebs cycle

Krauss, kraut, Krâvanh Mountains, Krav Maga, Krebs, Krebs cycle, Krebs-Henseleit cycle, Krebs ornithine cycle, Krebs urea cycle, Krefeld, Kreisky

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use Krebs cycle in a sentence

It almost mirrors the Buddhist cycle of life, death, and rebirth.
The Buddhist Business of Poaching Animals for Good Karma|Brendon Hong|December 28, 2014|DAILY BEAST
Eventually, the mistletoe bush grows, blooms, and forms berries, and the cycle begins anew.
Mistletoe is the Vampire of Plants|Helen Thompson|December 21, 2014|DAILY BEAST
The Newsroom aired its final episode on Sunday, already an eternity ago in news-cycle terms.
A Few Great Men Too Many: Aaron Sorkin Doesn’t Think You Can Handle the Truth|Arthur Chu|December 21, 2014|DAILY BEAST
To break her self-destructive cycle and heal, she decides to hike 1,100 miles of the Pacific Crest Trail solo.
Exclusive: The Making of Reese Witherspoon’s Golden Globe-Nominated ‘Wild’|Marlow Stern|December 12, 2014|DAILY BEAST

Especially given that we just spent almost $4 billion during the 2013-14 election cycle?
Just What We Needed: More Campaign Spending|Mark McKinnon|December 8, 2014|DAILY BEAST
The sexual cycle can take place only within the body of one genus of mosquito, anopheles.
A Manual of Clinical Diagnosis|James Campbell Todd
Here they enter red corpuscles as young malarial parasites, and the majority pass through the asexual cycle just described.
A Manual of Clinical Diagnosis|James Campbell Todd
Still hanging to Clip's canteen, he jerked the motor-cycle away from the bushes, got into the saddle, and started the pedals.
Motor Matt's "Century" Run|Stanley R. Matthews
Matt went down, with the motor-cycle on top of him, head and shoulders over the brink of the precipice.
Motor Matt's "Century" Run|Stanley R. Matthews
Matt had come to a quick stop, disengaging his right foot from the toe-clip and bracing the motor-cycle upright.
Motor Matt's "Century" Run|Stanley R. Matthews

British Dictionary definitions for Krebs cycle

Krebs cycle

noun

a stage of tissue respiration: a series of biochemical reactions occurring in mitochondria in the presence of oxygen by which acetate, derived from the breakdown of foodstuffs, is converted to carbon dioxide and water, with the release of energyAlso called: citric acid cycle, tricarboxylic acid cycle

Word Origin for Krebs cycle

C20: named after Hans Adolf Krebs (1900–81), German-born British biochemist

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

Medical definitions for Krebs cycle

Krebs cycle

[ krĕbz ]

A series of enzymatic reactions in aerobic organisms involving oxidative metabolism of acetyl units and producing high-energy phosphate compounds, which serve as the main source of cellular energy.citric acid cycle tricarboxylic acid cycle

Scientific definitions for Krebs cycle

Krebs cycle

A series of chemical reactions that occur in most aerobic organisms and are part of the process of aerobic cell metabolism, by which glucose and other molecules are broken down in the presence of oxygen into carbon dioxide and water to release chemical energy in the form of ATP. The Krebs cycle is the intermediate stage, occurring between glycolysis and phosphorylation, and results in the enzymatic breaking down, rearranging, and recombination of byproducts of glycolysis. The combination of glycolysis and the Krebs cycle ultimately allows 36 ATP molecules to be produced from the energy contained in one molecule of glucose and six molecules of oxygen. Also called citric acid cycle See more at cellular respiration.