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9 Cards in this Set

  • Front
  • Back
Energy of Activation (EA)
The amount of energy that reactants must absorb before a chemical reaction will start.
A protein serving as a catalyst, a chemical agent that changes the rate of a reaction without being consumed by the reaction.
The reactant on which an enzyme works
Active Site
The part of an enzyme molecule that actually bonds to the substrate
non proteins that are required to accompany enzymes for many enzymes to work, they can be inorganic substances
If the cofactor is an organic molecule than it is called a coenzyme, most of them are made from vitamins or are vitamins themselves
Competitive Inhibitor
A substance that reduces the activity of an enzyme by entering the active site in place of the substrate whose structure it mimics.
Noncompetitive Inhibitor
A substance that reduces the activity of an enzyme by binding to a location remote from the active site, changing its conformation so that it no longer binds to the substrate.
Negative Feedback
When a metabolic reaction is blocked by its products, it is the most important mechanisms that regulate metabolism.