Question

lactase and carbonic anhydrase are examples of what type of substance?
○ substrate
○ reactant
○ product
○ enzyme

Explanation:

Lactase is an enzyme that breaks down lactose (a substrate), and carbonic anhydrase is an enzyme that catalyzes reactions involving carbonic acid. Substrates/reactants are what enzymes act on, products are what's formed. So lactase and carbonic anhydrase are enzymes.

Answer:

D. enzyme