The functions of enzymes is to lower the ..................... of biochemical reactions.

Explanation

To answer the question, "The functions of enzymes is to lower the ..................... of biochemical reactions," we need to understand the role of enzymes in biochemical processes.

### Step-by-Step Solution:

1. **Understanding Enzymes**: Enzymes are biological catalysts that speed up biochemical reactions without being consumed in the process. They are essential for various metabolic processes in living organisms.

2. **Activation Energy Concept**: Every chemical reaction requires a certain amount of energy to get started, known as activation energy. This is the energy needed to reach the transition state, where bonds are breaking and forming.

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