Answer:
If enzyme Q is heated and denatured, it means that the enzyme has lost its three-dimensional structure and its active site, rendering it non-functional. Enzymes rely on their specific shape and active site to catalyze chemical reactions involving their substrates.
When denatured enzyme Q is placed in a solution of substrate X, you would not expect any significant enzymatic activity to occur. In other words, the enzyme Q would not be able to catalyze the conversion of substrate X into its product, assuming that this was the enzyme's normal function.
Enzyme denaturation is often irreversible, so the enzyme cannot regain its original structure and function simply by being placed in a substrate solution. In summary, when a denatured enzyme is mixed with a substrate, it would not effectively catalyze the substrate's conversion, and the reaction would proceed at a significantly slower rate or not at all.