What is one of the functions of enzymes in cellular respiration?

Enzymes play a crucial role in cellular respiration by increasing the efficiency of metabolic reactions. They are biological catalysts that lower the activation energy required for reactions to occur, which significantly speeds up the rate of these reactions without being consumed in the process. Through this mechanism, enzymes ensure that metabolic pathways operate effectively and efficiently, allowing cells to produce energy in the form of ATP from glucose and other substrates. This enhanced efficiency is vital for maintaining the energy needs of the cell, especially during processes like glycolysis, the Krebs cycle, and oxidative phosphorylation, which are all integral parts of cellular respiration.