Question

1. what is a catalyst? 2) what is an enzyme? 3) what is the active site and what is its job? 4) what is a substrate? 5) what is the product?

Explanation:

1. A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. It lowers the activation - energy barrier.
2. An enzyme is a biological catalyst, usually a protein, that speeds up chemical reactions in living organisms.
3. The active site is a specific region on an enzyme. Its job is to bind to the substrate and facilitate the chemical reaction.
4. A substrate is the molecule or molecules that an enzyme acts upon.
5. A product is the molecule or molecules formed as a result of the chemical reaction catalyzed by an enzyme.

Answer:

1. A catalyst is a substance that speeds up a chemical reaction without being used up.
2. An enzyme is a biological (usually protein - based) catalyst.
3. The active site is a part of an enzyme that binds to the substrate and helps in the reaction.
4. A substrate is the molecule an enzyme acts on.
5. A product is what is formed in an enzyme - catalyzed reaction.