Enzymes Quiz

Enzymes speed up reaction rates by changing:

• Activation Energy
• pH
• Hydrogen Bonds
• Kinetic Energy

At high temperatures enzyme activity declines because of:

• Denaturation
• Decreased Kinetic Motion
• Increased H-Bonding
• Dissociation of Ionic Compounds

Most enzymes have the ending:

• -ase
• -ose
• -ic acid
• -ate

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

• reusable
• catalyst
• specific
• fragile

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusablility
• denaturation
• specificity
• fragility

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 

Which of these is most likely an enzyme?  

• Sucrose
• Galactose
• Fructose
• Amylase

Letter D...

• active site
• enzyme
• substrate
• products