Answer:
It's True!!!!!!!!!!!!!!!!!!
The amswer on which us population is currently exp. a mental disorder id D. 35 %
Not sure what you mean but here's what i think
1.They are substrate-specific, because it's a lock-and-key mechanism.
2. They are re-used
3. They can catalyze reactions
4. They decrease activation energy
5. They are proteins by nature.