Which of the following statements are false? P. Breathing and respiration are synonymous. Q. Breathing is a biochemical process. R. No energy is released during breathing. S. Breathing is an extracellular process. Select the correct answer using codes given below:

Breathing and respiration are not synonymous. Breathing is first step of respiration which refers to the intake of fresh air inside and removal of foul air outside the respiratory organs. Respiration is a biochemical process by which organic compounds in food are oxidized to carbon dioxide, water and energy in a stepwise process. Breathing is physical process.