What is a byproduct of cellular respiration?

During cellular respiration, organisms convert glucose (or other organic molecules) into energy in the form of ATP. This process occurs in several stages, including glycolysis, the Krebs cycle, and the electron transport chain. A key outcome of this metabolic process is the production of carbon dioxide.

As glucose is broken down, carbon atoms are released from the molecules during these reactions, ultimately forming carbon dioxide. This gas is then exhaled by aerobic organisms, which obtain oxygen to complete the energy-generating process. Unlike glucose and fructose, which are substrates that provide energy, carbon dioxide is a waste product generated from the metabolism of these substrates. The generation of carbon dioxide during cellular respiration is a crucial aspect, as it not only reflects the breakdown of organic matter but also plays a role in maintaining environmental balance through gas exchanges in ecosystems.