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- 1. Multiple ChoiceWhat is a substance called if it speeds up a chemical reaction?reusablecatalystspecificfragile
- 2. Multiple Choice
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. - 3. Multiple ChoiceBased on the graph, what is the optimal temperature for this enzyme?15oC40oC30oC35oC
- 4. Multiple ChoiceIn the diagram, what is letter A?productsubstrateenzyme-substrate complexactive site
- 5. Multiple ChoiceEnzymes are...nucleic acidsproteinslipidscarbohydrates
- 6. Multiple ChoiceWhat is the function of an enzyme?enzymes break themselves into small piecesenzymes slow down chemical reactionsenzymes speed up chemical reactionsenzymes combine products to form reactants
- 7. Multiple ChoiceEnzymes speed up reaction rates by changing...Activation EnergypHHydrogen BondsKinetic Energy
- 8. Multiple ChoiceLetter D...active siteenzymesubstrateproducts
- 9. Multiple ChoiceLetter B...active siteenzymesubstrateproducts
- 10. Multiple ChoiceLetter C...active siteenzymessubstrateproducts
- 11. Multiple ChoiceLetter E...active siteenzymesubstrateproducts
- 12. Multiple ChoiceWith what 3 letters do enzymes typically end?-ose-ase-ese-tic
- 13. Multiple ChoiceAny substance that is acted upon by an enzyme is called a(n)?CoenzymeSubstrateVitaminPolypeptide
- 14. Multiple ChoiceWhich of the following conclusions can be drawn from this graph?The optimum pH of the enzyme is 6.6.The optimum pH of the enzyme is 5.8The enzyme’s activity increases as pH increases 5.0 to 9.0The enzyme’s activity is greater around pH of 8.0 .
- 15. Multiple Choice
What happens when enzymes are heated to a high temperature?
The enzymes die.
The shapes of the enzyme are altered.
The enzymes' amino acid sequence changes.
The enzymes remain the same
- 16. Multiple ChoiceEnzymes will make a reaction go _______ and use ______ energy.faster, lessfaster, moreslower, lessslower, more
- 17. Multiple ChoiceWhat happens to an enzyme when it is denatured?Activation energy is lowered.It becomes stronger.It loses its shape.Activation energy is raised.
- 18. Multiple ChoiceEvery enzyme has a optimal temperature and pH. True or False?TrueFalse
- 19. Multiple ChoiceEnzymes are composed of which of the following monomers?amino acidscarbohydratesnucleotidesmonosaccharides
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