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.
The Commercial Pilot Certificate is a qualification that permits the holder to act as the pilot of an aircraft for remuneration. 1  Minimum age of 18 years. 2  First class medical certificate.  At least PPL(A) / PPL(H) (Private Pilot License) holder with 150 hours total flight time out of which 50 as Pilot in Command.