The next phase of aerobic respiration is the Citric Acid Cycle, also known as the Kreb's Cycle, named for the biochemist who discovered it. To prepare for this stage, the pyruvate molecules from glycolysis are converted to a 2-carbon compound called Acetyl CoA.
Commercial pilots working in nonscheduled air transportation earned $78,010 on average in 2011, the bureau says. Those employed by technical schools and trade schools averaged $66,070, and workers providing support activities for air transportation earned $71,440.
Commercial pilot certificate. Next, you will need a commercial pilot certificate, which allows you to receive payment for your flight services. You earn this certificate by passing commercial pilot ground school and logging at least 250 flight hours, with allotted time dedicated to certain conditions and maneuvers.