Last Updated: 11 May 2026Verified for JEE 2027
BiologyNEET
Difference Between Enzyme and Hormone
Enzymes and hormones are both biological molecules that regulate body functions, but they work very differently. Enzymes are biological catalysts, while hormones are chemical messengers.
Enzyme vs Hormone — Comparison Table
| Aspect | Enzyme | Hormone |
|---|---|---|
| Nature | Mostly proteins | Proteins, steroids, or amines |
| Function | Catalyze biochemical reactions | Chemical messengers |
| Action site | At the site of production | At target organs (distant) |
| Consumed? | Not consumed (reusable) | Used up after action |
| Speed | Very fast catalysis | Slower, longer-lasting effects |
| Molecular weight | High | Variable (can be small) |
| Example | Amylase, Pepsin, Lipase | Insulin, Adrenaline, Thyroxine |
Key Points to Remember
Enzymes are highly specific (lock-and-key / induced fit model)
Hormones travel through blood to reach target organs
Enzyme activity depends on pH, temperature, and substrate concentration
Hormones regulate growth, metabolism, reproduction, and homeostasis
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