What is Hans Krebs?
{{Nobelprize|Physiology or Medicine}} {{Infobox scientist | name = Hans Krebs | image = Hans Adolf Krebs.jpg | image_size = | birth_date = {{birth date|1900|8|25|df=y}} | birth_place = [[Hildesheim]], [[Germany]] | nationality = German, British | death_date = {{death date and age|1981|11|22|1900|8|25|df=y}} | death_place = [[Oxford]], [[England]] | field = [[Internal medicine]], [[biochemistry]] | workplaces = [[Kaiser Wilhelm Institute for Biology]]<br>[[University of Hamburg]]<br>[[Cambridge University]]<br>[[University of Sheffield]]<br>[[University of Oxford]] | alma_mater = [[University of Göttingen]]<br>[[University of Freiburg]]<br>[[University of Berlin]]<br>[[University of Hamburg]] | known_for = Discovery of the [[urea cycle]] and the [[citric acid cycle]] | prizes = [[Nobel Prize in Physiology or Medicine]] (1953) }} '''Sir Hans Adolf Krebs''' ({{IPA-de|ˈhans ˈaːdɔlf ˈkʁeːps|-|De-Hans Adolf Krebs.ogg}}, {{IPAc-en|k|r|ɛ|b|z|,_|k|r|ɛ|p|s}}; 25 August 1900 – 22 November 1981)<ref>{{cite journal|last1=Kornberg|first1=H.|last2=Williamson|first2=D. H.|title=Hans Adolf Krebs. 25 August 1900 – 22 November 1981|journal=Biographical Memoirs of Fellows of the Royal Society|year=1984|volume=30|pages=350–385|doi=10.1098/rsbm.1984.0013|pmid=11616005|doi-access=free}}</ref><ref>{{cite journal|last1=Weber|first1=George|title=Sir Hans A. Krebs Centenary Lecture: cancer and clinical targeting|journal=Advances in Enzyme Regulation|year=2001|volume=41|issue=1|pages=1–29|doi=10.1016/S0065-2571(00)00026-1|pmid=11417529}}</ref><ref name=stubbs>{{cite journal|last1=Gibbons|first1=Marion Stubbs, Geoff|title=Hans Adolf Krebs (1900–1981)...His Life and Times|journal=IUBMB Life|year=2000|volume=50|issue=3|pages=163–166|doi=10.1080/152165400300001462|pmid=11142342|s2cid=26393428|doi-access=free}}</ref><ref name=raju>{{cite journal|last1=Raju|first1=Tonse NK|title=The Nobel Chronicles|journal=The Lancet|year=1999|volume=353|issue=9164|pages=1628|doi=10.1016/S0140-6736(05)75758-5|pmid=10334294|s2cid=