Enzymes

Enzymes speed up reaction rates by changing...

• Activation Energy
• pH
• Hydrogen Bonds
• Kinetic Energy

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.
• Enzymes decrease the energy level of the products.
• Enzyme decrease the activation energy of the reaction.
• Enzymes reverse the direction of the reaction.

Enzymes are...

• nucleic acids
• proteins
• lipids
• carbohydrates

What is the function of an enzyme?

• enzymes break themselves into small pieces
• enzymes slow down chemical reactions
• enzymes speed up chemical reactions
• enzymes combine products to form reactants 

What is the term for the specific region of an enzyme where a substrate binds?

• Active site

• Binding site

• Reaction site

• Catalytic site

Tags

DOK Level 1: Recall

What is a substance called if it speeds up a chemical reaction?

• reusable
• catalyst
• specific
• fragile

Letter E...

• active site
• enzyme
• substrate
• products

Letter B...

• active site
• enzyme
• substrate
• products

Enzymes can both build up or break down a substrate

• True

• False

Which letter corresponds to the activation energy of this reaction?

• A
• B
• C
• D