AP BIOLOGY

Detailed explanation-1: -It involves the processes by which energy (at the cellular level) is provided to the bodies of living things. Cellular respiration involves catabolic reaction in order to break down food into usable energy so that cells, and the living organisms that contain them, can survive and thrive.

Detailed explanation-2: -Cellular respiration is used to generate usable ATP energy in order to support many other reactions in the body. ATP is particularly important for energetically unfavorable reactions that would otherwise not occur without an energy input.

Detailed explanation-3: -As we have just seen, cells require a constant supply of energy to generate and maintain the biological order that keeps them alive. This energy is derived from the chemical bond energy in food molecules, which thereby serve as fuel for cells.

Detailed explanation-4: -During the process of respiration, oxidation of high energy food substances takes place in the cells of the living organisms to produce energy. The energy released in the process is in the form of the chemical substance called ATP ( Adenosine Triphosphate).