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Question

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

A
Glycolysis
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B
Krebs cycle
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C
Alcoholic fermentation
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D
Electron transport
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Solution

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'.

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