Choose the one most appropriate answer for each.
-enzyme
A)amount of energy to start a reaction
B)coenzyme that carries electrons
C)attachment of a phosphate group by a high-energy bond
D)an excess of end-product molecules alters the shape of the first enzyme in the pathway and shuts off that metabolic pathway
E)part of an enzyme that binds to the substrate
F)by binding a regulatory molecule, it changes the activity of a metabolic pathway
G)affects rates of chemical reactions by reducing activation energy
H)important energy currency in metabolism
I)enzyme that participates in the neutralization of hydrogen peroxide
J)a measure of the degree of energy change after a concentrated form of energy has been dispersed

Question

Quizplus · Accepted Answer

Enzymes affect rates of chemical reactions by reducing activation energy.

Answer: E 
 The part of an enzyme that binds to the substrate is called the active site.

Answer: F 
 By binding a regulatory molecule, an enzyme can change the activity of a metabolic pathway.

Answer: D 
 An excess of end-product molecules can alter the shape of the first enzyme in the pathway and shut off that metabolic pathway.

Answer: I 
 An enzyme that participates in the neutralization of hydrogen peroxide is called catalase.

Note: None of the answer choices provided match the definition of the remaining terms in the question stem.

Choose the One Most Appropriate Answer for Each