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- 1. Multiple-choice2 minutes1 ptThe 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.
- 2. Multiple-choice1 minute1 ptBased on the graph, what is the optimal temperature for this enzyme?15oC40oC30oC35oC
- 3. Multiple-choice1 minute1 ptIn the diagram, what is letter A?productsubstrateenzyme-substrate complexactive site
- 4. Multiple-choice30 seconds1 ptEnzymes are...nucleic acidsproteinslipidscarbohydrates
- 5. Multiple-choice2 minutes1 ptWhat 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
- 6. Multiple-choice1 minute12 ptsWhat happens when enzymes are heated to a high temperature?The enzymes die.The shapes of the enzyme are altered denatureThe enzymes' amino acid sequence changes.The enzymes remain the same
- 7. Multiple-choice1 minute1 ptLetter D...active siteenzymesubstrateproducts
- 8. Multiple-choice1 minute1 ptLetter C...active siteenzymessubstrateproducts
- 9. Multiple-choice30 seconds1 pt
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
- 10. Multiple-choice45 seconds1 ptWith what 3 letters do enzymes typically end?-ose-ase-ese-tic
- 11. Multiple-choice1 minute1 ptAn enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?truefalse
- 12. Multiple-choice30 seconds1 pt
What is the optimal pH for this enzyme?
6
10
9
7
- 13. Multiple-choice30 seconds1 pt
Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.
puncture
denature
double
delete
