Final answer:
The enzyme catalyzing the conversion of Glucose-6-phosphate to Glucose and Pi is a hydrolase, while the enzyme facilitating the transformation of Pyruvate to Lactate and NAD+ is lactate dehydrogenase, an oxidoreductase.
Step-by-step explanation:
The enzymes that catalyze the reactions given are classes of biochemical compounds with specific actions. The reaction Glucose-6-phosphate + H2O → Glucose + Pi is typically catalyzed by a type of enzyme known as hydrolase. Hydrolases are enzymes that facilitate the cleavage of bonds through the addition of water; this includes many digestive enzymes like amylase and maltase.
The Pyruvate + NADH → Lactate + NAD+ reaction is catalyzed by lactate dehydrogenase, which belongs to the group of oxidoreductase enzymes. These enzymes enable the oxidation-reduction reaction, where lactate dehydrogenase specifically catalyzes the conversion of pyruvate to lactate while oxidizing NADH to NAD+ as part of anaerobic respiration.