A balanced budget is all about not going over or too low. If you can keep the budget to a minimum but not too low then your budget would be balanced. You want to have at least the same amount of money in your pocket than what you are going to spend.
a substrate binds to an enzyme at the active site, where the reaction occurs.
Answer:
Each cell has a unique chemical composition
Explanation:
All the other answers are apart of the modern cell theory.