Answer:
The answer is: Enzymatic catalysis. And thus decreasing the activation energy.
Explanation:
Serine proteases are hydrolases that degrade peptide bonds of peptides and proteins and have an essential serine amino acid in their active center for enzymatic catalysis.
Most biological reactions go slowly if they are not catalyzed. Enzymes catalyze reactions by stabilizing the transition state, thus decreasing the activation energy, accordingly The speed of the reaction increases.
The answer is: Enzymatic catalysis. And thus decreasing the activation energy.