CH2 S4 Enzymes

What is activation energy?

• The amount of energy needed for substrates to form

• The amount of energy needed for a reaction to start

• The amount of energy given off in a reaction

• The amount of energy needed before an enzyme can appear

What two things do enzymes do?

• Lowers the activation energy

• Increases the activation energy

• Makes the reaction take longer

• Has no effect on a reaction

• Makes the reaction go quicker

What connects to an enzyme at the beginning of a reaction?

• Product

• Substrate

• Reactions

• Molecules

What area of an enzyme does the reaction take place?

• Bottom

• Cofactor

• Active Site

• Top

What is a giveaway that an enzyme is present?

• Ends in -ate

• Ends in -ose

• Ends in -ase

• Ends in -ite

What happens to the enzyme's active site when a reaction takes place?

• It shifts and changes shape

• It always gets smaller

• It always gets larger

• It doesn't change at all

During a reaction, what does the active site do? Choose all that applies.

• Just provides a location for the reaction

• Breaks bonds

• Makes bonds

• Leaves the reactants alone

What is it called when the substrate and the enzyme connect?

What happens to the enzyme when the product leaves?

• The enzyme takes a much needed break

• The enzyme maintains the changed shape

• The enzyme is broken down into its pieces

• The enzyme resumes is original shape

How does pH affect an enzyme?

• It does not affect an enzyme

• An enzyme can only work in an acidic condition

• An enzyme can only work in a basic condidtion

• An enzyme can only work in its designated pH range