Which of the following statements regarding enzyme is TRUE
Enzyme decreases the free energy change of a reaction
Enzyme changes the direction of chemical reaction
Enzyme increase rate of reaction
Enzyme prevents changes in substrate concentration
An enzyme catalyses a reaction by …
lowering the energy of activation of a reaction
supplying the energy to speed up a reaction.
lowering the free energy of a reaction.
changing the equilibrium of a spontaneous reaction.
What is the active site of an enzyme?
A region that binds allosteric regulators of the enzyme
A region that binds the products of the catalytic reaction
A region that is inhibited by the presence of a coenzyme or a cofactor
A region that is involved in the catalytic reaction of the enzyme
Zinc, an essential trace element for most organisms, is present in the active site of enzyme carboxypeptidase. The zinc most likely functions as
a cofactor necessary for enzyme activity
a competitive inhibitor of the enzyme
a non-competitive inhibitor of the enzyme
a coenzyme derived from a vitamin
Watch the animation and identify the hypothesis involved
Lock and Key hypothesis
Induced Fit hypothesis
NAD+ is the example of
what reduces the productivity of enzymes by blocking substrates from entering active sites?
non competitive inhibitors