Final answer:
Biochemical reactions inside living cells are governed by enzymes lowering the activation energy, allowing metabolic processes to proceed. Conditions like pH and temperature also influence these reactions. These reactions are critical components of an organism's metabolism, which is the total of all biochemical reactions involving energy release and consumption.
Step-by-step explanation:
Biochemical reactions within living cells are complex processes that are essential for sustaining life. They are part of an organism's metabolism which includes both exothermic reactions (releasing energy) and endothermic reactions (absorbing energy). These reactions are regulated by enzymes, which lower the activation energy necessary for reactions to occur at a rate conducive to life. This control mechanism is sensitive to factors such as pH and temperature and ensures that metabolic reactions proceed efficiently and correctly.
Moreover, the concept of bioenergetics is integral to understanding how energy flows through living systems and how cells harness energy for metabolic reactions. Some reactions release energy spontaneously, while others require energy input. Cells must continuously renew their energy supply to facilitate the energy-requiring reactions of metabolism. These various factors work in concert to govern the biochemical reactions inside cells.