Rate of ATP Breakdown in Flight Muscle ATP production in the flight muscle of the fly Lucilia sericata results almost exclusively from oxidative phosphorylation. During flight, 187 mL of O/hr.g of body weight is needed to maintain an ATP concentration of 7.0 mol/g of flight muscle. Assuming that flight muscle makes up 20% of the weight of the fly, calculate the rate at which the flight-muscle ATP pool turns over. How long would the reservoir of ATP last in the absence of oxidative phosphory- lation? Assume that reducing equivalents are transferred by the glycerol 3-phosphate shuttle and that O is at 25 C and 101.3 kPa (1 atm).