BIO024 SAS 4 - Enzymes Quiz

What is the role of enzymes in biochemical reactions?

• Act as reactants

• Act as catalysts

• Slow down reactions

• Provide energy

Which of the following is an example of a conjugated enzyme?

• Apoenzyme

• Cofactor

• Holoenzyme

• Active site

What type of enzyme catalyzes oxidation-reduction reactions?

• Transferase

• Lyase

• Oxidoreductase

• Ligase

Which of the following is the enzyme found primarily in skeletal and cardiac muscle and in smaller fractions in the brain?

• Creatine Kinase

• Cardiac Troponin

• g-Glutamyl Transpeptidase

• The enzyme concentrationLactate Dehydrogenase

Which of the following is an irreversible enzyme inhibitor?

• Competitive inhibitor

• Noncompetitive inhibitor

• Allosteric inhibitor

• Nerve gas

An ________ inhibitor is a molecule that inactivates enzymes by forming a strong covalent bond to an amino acid side-chain group at the enzyme’s active site.

• Reversible

• Irreversible

• Noncompetitive

• Competitive

Enzymes that catalyze the transfer of a functional group are called:

• Isomerases

• Transferases

• Ligases

• Hydrolases

Which of these enzymes is used as a diagnostic marker for liver disease?

• Lipase

• Amylase

• Alanine aminotransferase (ALT/SGPT)

• Creatine kinase

What is the function of allosteric enzymes?

• Break down substrates

• Regulate enzyme activity through activators or inhibitors

• Bind to competitive inhibitors

• Form irreversible bonds with substrates

A zymogen is:

• An active enzyme

• A protein inhibitor

• An inactive precursor of an enzyme

• An enzyme cofactor