Chapter 8: 8.2 - Enzymes Flashcards
What is a Catalyst?
They are chemicals which speed up chemical reactions at room temperature.
What are Enzymes?
Reactions which occur within plant organisms directed by protein catalysts.
What does enzymes help with?
They help with reducing “activation energy”
What are Substrates?
They are the molecules on which enzymes work.
What is Active Site?
The area which joins with the substrate molecules.
What are the Factors Affecting Enzyme Reactions?
- pH
- Substrate Concentration
- Temperature
- Competitive Inhibitor
What is Denaturation?
This is what causes a temporary change.
What is Coagulation?
It is a permanent or final change in the protein shape.
Turning “Off” Metabolic Pathways
It comes down to need.
What is Feedback Inhibition?
The inhibition of an enzyme in a metabolic pathway by the final product of that pathway.
What is a regulatory site?
It’s used to regulate the pathway. If you alter an active site it will change the shape, it will affect if the enzyme works or not.
Turning “On” Metabolic Pathways
An acquisition of initial substrate can turn on enzyme activity.
What is Precursor Activity?
It is if the substrate molecules combines at the regulatory site.
What is Allosteric Activity?
It is the 2nd spot on the enzyme which directs the regulatory site.
