Review Questions

The energy needed to start a chemical reaction

• Catalyst
• Activation Energy
• Substrates
• Reactants

Look at this reaction graph. Which of the following is NOT true of this reaction?

• The reactants have lower energy than the product
• This is showing an endothermic reaction
• Activation energy was not needed for this to occur
• The product has more energy than the reactants

Which of the following statements is TRUE of enzymes?.

• Enzymes are not found in living organisms

• Enzymes help to speed up chemical reactions

• Enzymes are made carbohydrates

• Enzymes increase the activation energy of a chemical reaction

In this diagram A is the

• substrate
• enzyme
• enzyme-substrate complex
• product

Enzymes are also considered to be biological ____________

• catalysts

• organisms

• life

• denatures

The substance(s) that enter an enzyme and are either joined or broken apart

• Reactants
• Products
• Substrates
• Denatures

The area of an enzyme where the substrate binds to the enzyme

• Product
• Active Site
• Catalyst
• Complex

Which molecules in this reaction are the products?

• CH4 and O2

• H2O and O2
• CO2 and H20
• CH4 and H20

Which molecules in this reaction are the reactants?

• CH4 and O2

• H2O and O2
• CO2 and H20
• CH4 and H20

What term is used to describe the process of an enzyme changing shape due to extreme heat or pH levels?

• depolarize
• catalyze

• polymerize
• denature