Chapter 8.2 Enzymes Flashcards
A protein catalyst that permits chemical reactions to proceed at low temperatures.
Enzyme
A chemical that increases the rate of chemical reactions without altering the products or being altered itself.
Catalyst
A molecule on which an enzyme works.
Substrate
The area of an enzyme that combines with the substrate.
Active Site.
An inorganic ion that helps an enzyme combine with a substrate molecule.
Cofactor.
An organic molecule synthesized from a vitamin that helps an enzyme to combine with a substrate molecule.
Coenzyme.
A molecule with a shape complementary to a specific enzyme that competes with the substrate for access to the active site of the enzyme and blocks chemical reactions.
Competitive Inhibitor.
The inhibition of an enzyme in a metabolic pathway by the final product of that pathway.
Feedback Inhibition.
The activation of the last enzyme in a metabolic pathway by the initial substrate.
Precursor Activity.
A change I’m an enzyme caused by the binding of a molecule.
Allosteric Activity.
