Australian Year 10 Biology Practice Test

During cellular respiration, the primary products generated are energy in the form of adenosine triphosphate (ATP), carbon dioxide, and water. This process occurs within the cells and primarily takes place in the mitochondria.

When glucose is broken down in the presence of oxygen, a series of reactions occur, including glycolysis, the Krebs cycle, and the electron transport chain. Through these processes, glucose is oxidized, leading to the release of energy, which is captured as ATP, the energy currency of the cell. Carbon dioxide is produced as a waste product during the oxidation of glucose and is expelled from the organism, while water is formed as a byproduct of the reactions that take place during the electron transport chain.

Focusing on energy formation, ATP is vital for various cellular functions, making it the key output of cellular respiration. Therefore, the correct answer highlights all crucial products of this process, which are energy (ATP), carbon dioxide, and water.