Rihanna released her sixth studio album "Talk That Talk" on November 21, 2011. It featured collaborations with Hip hop legend Jay Z, Alex Da Kid, Stargate and Calvin Harris and boasts of the hit track & music video "We Found Love" which peaked at no 1 on the Billboard Hot 100 singles charts. The uni and bi prefixes seek advice from the variety of substrates that enter the enzyme and the variety of merchandise that depart the enzyme; bi describes a situation where two substrates enter the enzyme ...