Final answer:
Enzymes are substrate-specific and work with a specific substrate. They also require specific conditions to work effectively. Their specificity allows them to catalyze specific reactions.
Step-by-step explanation:
Enzymes are substrate-specific, meaning each enzyme works only with a particular substrate. This explains why there are so many different enzymes.
Enzymes also require specific conditions to work, such as the right temperature and pH. Some enzymes work best under acidic conditions, while others work best in neutral environments.
Overall, enzymes have a jigsaw puzzle-like match with their substrates, resulting in their specificity and the ability to catalyze specific reactions.