Enzyme-Substrate Complex Quiz

What is enzyme specificity?

• The ability of an enzyme to bind to any substrate

• The ability of an enzyme to catalyze multiple substrates simultaneously

• The ability of an enzyme to bind to and catalyze any substrate

• The ability of an enzyme to selectively bind to and catalyze a specific substrate or group of substrates.

Explain the lock and key model of enzyme-substrate interaction.

• The lock and key model describes the specific interaction between an enzyme and its substrate based on their complementary shapes.

• The lock and key model describes the interaction between an enzyme and its substrate based on their temperatures.

• The lock and key model describes the interaction between an enzyme and its substrate based on their sizes.

• The lock and key model describes the interaction between an enzyme and its substrate based on their charges.

Describe the induced fit model of enzyme-substrate interaction.

• The induced fit model proposes that the substrate undergoes conformational changes upon binding to the enzyme.

• The induced fit model suggests that enzymes and substrates do not interact with each other.

• The induced fit model proposes that the active site of the enzyme undergoes conformational changes upon binding to the substrate.

• The induced fit model states that enzymes and substrates bind together without any conformational changes.

What is catalytic efficiency?

• The temperature at which a catalyst is most effective in a chemical reaction.

• The ability of a catalyst to produce a desired product in a chemical reaction.

• The effectiveness of a catalyst in facilitating a chemical reaction.

• The rate at which a catalyst is consumed in a chemical reaction.

Define enzyme kinetics.

• The study of rates of enzyme-catalyzed reactions and factors influencing them.

• The study of rates of enzyme-catalyzed reactions and factors not influencing them.

• The study of rates of enzyme-catalyzed reactions without considering factors influencing them.

• The study of rates of non-enzyme-catalyzed reactions and factors influencing them.

How does enzyme specificity contribute to the efficiency of enzymatic reactions?

• Enzyme specificity allows enzymes to bind to multiple substrates, increasing the efficiency of enzymatic reactions.

• Enzyme specificity is not related to the efficiency of enzymatic reactions.

• Enzyme specificity ensures that enzymes only bind to specific substrates, increasing the efficiency of enzymatic reactions.

• Enzyme specificity prevents enzymes from binding to any substrates, decreasing the efficiency of enzymatic reactions.

What are the key features of the lock and key model?

• specificity and complementarity

• randomness and unpredictability

• flexibility and adaptability

• affinity and similarity

What are the advantages of the induced fit model over the lock and key model?

• The induced fit model leads to a worse fit and decreased catalytic efficiency.

• The induced fit model does not require any conformational changes in the enzyme and substrate.

• The induced fit model is less flexible than the lock and key model.

• The induced fit model allows for conformational changes in both the enzyme and substrate, leading to a better fit and increased catalytic efficiency.

How is catalytic efficiency calculated?

• kcat + Km

• kcat/Km

• kcat * Km

• kcat - Km

Explain the different types of enzyme kinetics.

• Michaelis-Menten kinetics, Lineweaver-Burk kinetics, and Briggs-Haldane kinetics

• Competitive inhibition kinetics, Non-competitive inhibition kinetics, and Uncompetitive inhibition kinetics