Enzyme_Quiz 1

Choose false statement regarding enzymes.

• Enzymes are proteins that function as catalysts.

• Enzymes are specific.

• Enzymes provide activation energy for reactions.

• Enzymes can be used many times for a specific reaction.

Choose the best relationship between an enzyme and a reactant molecule.

• a temporary association.

• a reaction that change enzyme permanently.

• a permanent alteration of structure.

• a noncomplementary binding.

To overcome an energy barrier between reactants and products, energy must be provided to get the

reaction started. Find this energy.

• activation energy

• initiation energy

• kinetic energy

• reaction energy

Choose the CORRECT statement regarding the enzymes.

• Composed primarily of polypeptides, which are polymers of amino acids.

• The nature of an enzyme is protein.

• Bind their substrates at active sites.

• All statements are true

Find the TRUE statement about enzymes.

• Enzymes accelerate reactions by lowering the activation energy.

• Enzymes are proteins that are in three-dimensional and quaternary structure.

• Enzymes do not alter the overall change in free energy for a reaction

• All of these are true.

Choose the best statement about enzyme.

• Enzymes are potent catalysts because they are consumed in the reactions they catalyze.

• Enzymes are potent catalysts because they can prevent the conversion of products back to

  substrates.

• Enzymes are potent catalysts because they lower the activation energy for the reactions they

  catalyze.

• Enzymes are potent catalysts because they increase the activation energy for the reactions

  they catalyze.

Identify A

Identify B

Identify X

State the type of reaction involved in A producing B.