Question

Choose the correct answers from the alternatives given :
Which one of the following processes makes direct use of oxygen?

• A. Glycolysis
• B. Krebs cycle
• C. Alcoholic fermentation
• D. Electron transport

Answer 1

The correct option is D Electron transport

Aerobic pathways are those which requires oxygen for its completion, they are :

• Glycolysis- the process of partial oxidation of glucose into two molecules of pyruvic acid through a series of enzyme-mediated reactions releasing some energy.
• Krebs cycle- also called as the citric acid cycle, it is oxidative and degradation of acetate obtained from pyruvate.
• Alcoholic fermentation- it is anaerobic respiration and incomplete digestion of food without the use of oxygen.
• Electron transport- it has a series of electrons and protons with coenzymes and cytochromes. Here oxygen is the ultimate acceptor of electrons.

So, the correct option is ' Electron transport'.