Enzymes Schedule Test (Prodigy Prep Academy)

 Enzymes are primarily composed of which type of biomolecule?

• Protein

• Carbohydrates

• lipids

• Nucleic acids

The unique three-dimensional structure of an enzyme is critical for its function. Which level of protein structure represents this unique shape?

• Primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

The active site of an enzyme is where:

• Substrate binding and catalysis occur

• Products are released

• Enzyme regulation occurs

• Enzyme synthesis takes place

Enzymes catalyze biochemical reactions by:

• Increasing the activation energy

• Decreasing the activation energy

• Changing the reactants into products

• Inhibiting the substrate

The Lock and Key model implies that:

• The active site is complementary to the substrate from the start

• The active site changes its shape to accommodate the substrate

• The active site and substrate induce each other's shapes

• The active site remains unchanged during catalysis

Enzymes lower the activation energy needed for a reaction to proceed by:

• Increasing temperature

• Providing additional substrates

• Stabilizing the transition state

• Inhibiting the reactants

Which factor does not influence enzyme activity?

• pH

• Temperature

• Pressure

• Substrate concentration

Enzyme activity is most affected by changes in:

• pH and temperature

• Substrate concentration and pH

• Substrate concentration and temperature

• pH and enzyme concentration

Competitive inhibition of an enzyme occurs when:

• An inhibitor binds to the active site

• An inhibitor binds to a different site on the enzyme

• The substrate is at a high concentration

• The enzyme is denatured

The Lock and Key model and the Induced Fit model describe the interaction between:

• Enzyme and cofactor

• Enzyme and substrate

• Enzyme and product

• Enzyme and inhibitor