Question

Sequence of aerobic metabolic breakdown of glucose is

• A. Glycolysis-transition-citric acid cycle-electron transport system
• B. Transition-glycolysis-electron transport-citric acid cycle
• C. Electron transport system-citric acid cycle- transition-glycolysis
• D. None of the above

Answer 1

The correct option is A Glycolysis-transition-citric acid cycle-electron transport system

• For the aerobic respiration the substrate glucose has to undergo a following set of process
• First of which is glycolysis where the molecule of glucose is broken down to 2 molecules of pyruvate.
• These pyruvate molecules are to be cconverted to Acetyl CoA so that it can enter the mitochondrial membrane and undergo kerb cycle.
• After being converted to acetyl coA it takes part in kerb cycle where molecules of NADH, FADH and ATP are formed.
• These NADH, FADH molecules are the electron acceptors which are used in ETS to transport electron and hydrogen ions through the complexs.
• These electrons and hydrogen ions are used for the formation of ATP via ATP synthase.
• Therefore the process for the aerobic breakdown of glucose is Glycolysis followed by transition of pyruvate then citric acid cycle which is followed by electron transport system.
• Therefore the correct answer is 'Glycolysis-transition-citric acid cycle-electron transport system'