Final answer:
Bypass reactions in metabolic pathways are typically either anabolic, which build complex molecules and require energy, or catabolic, which break down molecules and release energy.
Step-by-step explanation:
The bypass reactions that occur in metabolic pathways are typically anabolic or catabolic reactions. Anabolic reactions are involved in the synthesis of larger molecules from smaller ones and require energy. On the other hand, catabolic reactions involve the breakdown of larger molecules into smaller ones and release energy. These pathways are critical in metabolism, which is composed of both synthesis (anabolism) and degradation (catabolism). These reactions are interconnected through a series of biochemical steps that are highly regulated, for instance, through feedback inhibition to maintain homeostasis.