Fenian Cycle | National Cycle Network | Cardiac cycle | 24-hour news cycle | The Kentucky Cycle | The Baroque Cycle | Dream Cycle | Cycle World | Ulster Cycle | TCA Awards | Stirling cycle | Segregated cycle facilities | Post-Vulgate Cycle | Biological life cycle | Tillerman Cycle | The Riftwar Cycle | The Prayer Cycle | TCA | solar cycle | Reynolds Cycle Technology | Otto cycle | National Cycle Route 73 | National Cycle Route 1 | Motor Cycle News | Inheritance Cycle | Giovanni Baleison, ''Cycle on the life of Saint Sebastian'', fresco, detail of main altar, St. Sebastian Church, Saint-Étienne-de-Tinée | Combined cycle | Classic cycle races | classic cycle races | Bol d'Or cycle race |
Named after the English biochemist Herbert Grace Crabtree, the Crabtree effect describes the phenomenon whereby the yeast, Saccharomyces cerevisiae, produces ethanol (alcohol) aerobically in the presence of high external glucose concentrations rather than producing biomass via the tricarboxylic acid (TCA) cycle, the usual process occurring aerobically in most yeasts e.g. Kluyveromyces spp.
The series of reactions is known by various names, including the "citric acid cycle", the "Krebs cycle" or "Szent-Györgyi — Krebs cycle", and the "tricarboxylic acid (TCA) cycle".