1. the hearts job is to propel blood throughout the body
2. i think the lungs trade CO2 for O2
3. they would go into hypothermic shock or something:p
Products are released from the active site of an enzyme during a chemical reaction. Active sites directly bind to the substrates and carry out the reaction. It is this site, where product if formed, and after completion of the reaction, are released. It possesses catalytic group for making and breaking the bonds, for carrying out the reaction.