AP BIOLOGY

Detailed explanation-1: -The F1 portion of ATP synthase is hydrophilic and responsible for hydrolyzing ATP. The F1 unit protrudes into the mitochondrial matrix space. Subunits and make a hexamer with 6 binding sites. Three of them are catalytically inactive and they bind ADP.

Detailed explanation-2: -ATP synthase consists of two well defined protein entities: the F1 sector, a soluble portion situated in the mitochondrial matrix, and the Fo sector, bound to the inner mitochondrial membrane. F1 is composed of three copies of each of subunits and , and one each of subunits ,