About: http://webisa.webdatacommons.org/135304724

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The OP's title and question are a little unclear, however the two answers posted clarify the OP's question, correct his/her misconception and provide a detailed comparison of the relevant cellular and physiologic metabolism.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com