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- 1. Multiple Choice
Enzymes are an example of
Lipids
Carbohydrate
Protein
Nucleic Acid
- 2. Multiple ChoiceWhat is the purpose of an enzyme?give permission for the reactionraise activation energyspeed up reactionscontrol how many reactions occur
- 3. Multiple ChoiceEnzymes are capable of increasing the rate of a chemical reaction within a living cell. Enzymes accomplish this through which of the following means?reducing the number of productsreducing the activation energyincreasing the temperature of the cellincreasing the concentration of reactants
- 4. Multiple ChoiceEach enzyme only has 1 substrate that will fit its active site. What is this called?reusablecatalystspecificfragile
- 5. Multiple ChoiceWhat 3 letters do enzymes typically end in?-ose-ase-ese-tic
- 6. Multiple ChoiceAny substance that is acted upon by an enzyme is called a(n)?CoenzymeSubstrateVitaminPolypeptide
- 7. Multiple ChoiceAfter the enzyme and substrate bind together and perform the reaction, what does the substrate become?a substratean enzymea productan active site
- 8. Multiple Choice
In the diagram, what is letter A?productsubstrateenzyme-substrate complexactive site - 9. Multiple ChoiceLetter D...active siteenzymesubstrateproducts
- 10. Multiple ChoiceLetter B...active siteenzymesubstrateproducts
- 11. Multiple Choice
In a chemical reaction, ________ are what you have at the end
Products
Molecules
Reactants
Substances
- 12. Multiple ChoiceIn a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?ReactantsProductsAtomsCatalysts
- 13. Multiple ChoiceEnzymes provide a site where reactants called substrates can be brought together in an enzyme-catalyzed reaction. The site is called theenzyme substrate complex.reaction site.active site.lock and key.
- 14. Multiple ChoiceChemical reactions always involvethe breaking of bonds in reactants.the formation of new bonds in products.the breaking of bonds in reactants and the formation of new bonds in products.enzymes.
- 15. Multiple ChoiceAn enzyme speeds up a reaction bylowering the activation energy.raising the activation energy.releasing energy.absorbing energy.
- 16. Multiple ChoiceBased on the graph, what is the optimal temperature for this enzyme?15oC40oC30oC35oC
- 17. Multiple ChoiceThe 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.
- 18. Multiple Choice
How does an enzymes shape relate to its function?
the shape of the enzyme has no relation to its function
the enzyme is shaped specially for certain substrates to perform a specific reaction
the enzyme shape acts as a receptor to certain products
the enzyme shape can fit into specific substrates to cease a reaction
- 19. Multiple Choice
Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.
puncture
denature
double
delete
- Answer choicesTagsAnswer choicesTags