Read the following statements and choose the correct option: 1. Electrons from NADH produced in the mitochondrial matrix during citric acid cycle are oxidised by an NADH dehydrogenase (complex I), 2. Oxygen acts as the final hydrogen acceptor. 3. The energy released during the electron transport system is utilised in synthesising ATP with the help of ATP synthase. 4. Electrons are then transferred to ubiquinone locat

Step-by-step solution

Oxidation of one molecule of NADH gives rise to 3 molecules of ATP, while that of one molecule of FADH2 produces 2 molecules of ATP. Oxygen acts as the final hydrogen acceptor. The energy released during the electron transport system is utilised in synthesising ATP with the help of ATP synthase.,Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degraded to CO2 and H2O. • In fermentation there is a net gain of only two molecules of ATP