Final answer:
The complete collection of biochemical reactions within a cell is known as metabolism, comprising anabolic and catabolic pathways catalyzed by enzymes and regulated by mechanisms like feedback inhibition.
Step-by-step explanation:
The complete collection of biochemical reactions that occur in a cell is collectively called metabolism. These reactions are organized into interconnected pathways known as metabolic pathways. There are two types of reactions within these pathways: exergonic reactions, which release energy, and endergonic reactions, which require energy. Anabolism is the process of building complex molecules from simpler ones and requires energy, while catabolism involves breaking down complex molecules into simpler ones, releasing energy in the process. These two processes are fundamental for cell function and are balanced within a cell's metabolism, providing the necessary energy and molecular building blocks for cellular activities.
Moreover, metabolic pathways are catalyzed by enzymes and are regulated by mechanisms such as feedback inhibition, where the end product of a pathway can inhibit an earlier step in the sequence. This regulation is essential for maintaining cellular balance and efficiency.