Question

How does cellular respiration release energy from food?

Answer 1

Hint: The cellular respiration is a metabolic pathway involving a series of chemical reactions. The cellular respiration involves use of enzymes and energy to break the glucose molecules taken up by the food by the process of glycolysis pathway to release energy in the form of ATP adenosine triphosphate.

Complete answer:
• Cellular respiration is seen in all the plant and animal cells.
• It is a process where the chemical energy from food or the nutrients taken up by the plant or animal is released in the form of ATP converted to energy.
• ATP is a chemical molecule which is responsible for capturing the energy taken up by the living and releases it to boost the cellular activity it helps in breaking down of the food molecule.
• Glucose the presence of oxygen in aerobic conditions undergoes chemical reactions and enzymatic activity to produce carbon dioxide and water; this is the basic cellular respiration.
• In the plant cell glucose releases two molecules of ATP and produces pyruvate whereas acetyl coenzyme in the Krebs cycle produces two molecules of ATP which is then followed by electron transport chain produces thirty to forty ATP which are responsible for the cellular activity and respiration.

Note: The overall cellular respiration of the glucose molecule produce thirty six ATP molecules in the presence of oxygen and by breaking of the molecules to produce carbon dioxide, water and energy this is the entire activity of respiration undergoing metabolic chemical reaction to produce energy by the cellular respiration.