Although it makes energy immediately available for use, which energy pathway can only support about 30 seconds of sustained activity of all-out effort
a. the nonoxidative system
b. the oxidative system
c. the phosphagen system
d. the krebs cycle
Answer: c. the phosphagen system
Although it makes energy immediately available for use, the phosphagen system can only support about 30 seconds of sustained activity of all-out effort. The enzyme creatine kinase breaks down phosphocreatine so that the phosphate group can be added to ADP to create ATP.