ENZYMES

What is activation energy?

• Energy released during a reaction

• Energy required to start a reaction

• Energy stored in products

• Energy lost as heat

What is the effect of an enzyme on the energy required for a reaction?

• It increases the energy required

• It decreases the energy required

• It has no effect

• It doubles the energy required

What is the transition state in a chemical reaction?

• The initial state of reactants

• The final state of products

• The high-energy state during a reaction

• The low-energy state during a reaction

What is the effect of enzymes on the transition state of a reaction?

• They raise the energy of the transition state

• They lower the energy of the transition state

• They have no effect

• They eliminate the transition state

What is the role of activation energy in a chemical reaction?

• It is the energy released

• It is the energy required to start the reaction

• It is the energy stored in products

• It is the energy lost as heat

Why are enzymes described as "picky"?

• They can fit multiple substrates.

• They can only fit one kind of substrate.

• They change shape frequently.

• They are not reusable.

What is the term for the location where a substrate fits into an enzyme?

• Active site

• Inactive site

• Binding site

• Reaction site

What is the primary benefit of using enzymes in chemical reactions?

• They increase the reaction time.

• They reduce the energy needed.

• They produce more substrates.

• They change the products.

What is the process called when products are released from the enzyme-substrate complex?

• Substrate release

• Product release

• Enzyme release

• Reaction release

At what temperature does the enzyme work best (optimum)?

• 0°C

• 20°C

• 40°C

• 60°C