Enzymes
Enzymes increase the energy content of the reactants (or substrates).
False
The amount of energy released by a chemical reaction is much greater when an enzyme catalyzes it.
False
The chemical reactions of living cells could not occur in the absence of enzymes.
False
The higher the temperature, the faster the rate of an enzymatic reaction will be.
False
The rate of an enzymatic reaction depends on the concentration of the substrate but not the concentration of the enzyme.
False
When an enzyme catalyzes a chemical reaction some of the enzyme is lost
False
A substrate molecule binds to certain amino acids that line the active site of an enzyme.
True
Allosteric inhibitors alter the conformation of the enzyme but do not bind at the active site.
True
An enzyme works by decreasing the activation energy of a chemical reaction.
True
Catalysts are neither produced nor consumed by chemical reactions that they catalyze.
True
Chemical reactions release the same amount of energy whether an enzyme is involved or not.
True
Coenzymes alter the shape of the enzyme by binding at a site other than the active site.
True
Enzymes cannot stimulate reactions to occur that would not occur in the absence of the enzyme.
True
Enzymes decrease the activation energy, but have no effect on the energy content of substrates.
True
The active site of the enzyme is the specific region to which the substrate binds.
True
Uncatalyzed reactions have a higher activation energy than catalyzed reactions.
True