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- 1. Multiple Choice
What is a substance called if it speeds up a chemical reaction?
reusable
catalyst
specific
fragile
- 2. Multiple Choice
In the diagram, what is letter A?productsubstrateenzyme-substrate complexactive site - 3. Multiple ChoiceEnzymes are...nucleic acidsproteinslipidscarbohydrates
- 4. 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
- 5. Multiple ChoiceWith what 3 letters do enzymes typically end?-ose-ase-ese-tic
- 6. Multiple ChoiceWhere do substrates bind on an enzyme?voltage-gated channelssurface receptorcalcium channelsactive site
- 7. Multiple ChoiceThe "lock and key hypothesis" attempts to explain the mechanism of?Vacuole formationPinocytosisSharing of electronsEnzyme specificity
- 8. Multiple ChoiceWhich substrate would this enzyme catalyze?Δσ∅μ
- 9. Multiple ChoiceWhat makes an enzyme substrate specific?SizeShapeNameLocation it is found in
- 10. Multiple ChoiceEnzymes need certain environmental conditions in order to function properly. What happens when enzymes are heated to a high temperature?they diethey denaturethey change their amino acid sequencethey work better
- 11. Multiple Choice
How do enzymes increase the speed of chemical reactions?
reducing the number of products
reducing the activation energy
increasing the temperature of the cell
increasing the concentration of reactants
- 12. Multiple ChoiceAfter the enzyme and substrate bind together and perform the reaction, what does the substrate become?a substratean enzymea productan active site
- 13. Multiple Choicecan a change in pH alter the active site of an enzymeyesno
- 14. Multiple ChoiceWhich of these is NOT true?Enzymes can denature (change shape) when the temperature gets too high.Enzymes can only be used once in a chemical reaction.Extreme pH can denature enzymes.Enzymes speed up chemical reactions.
- 15. Multiple ChoiceWhat happens when enzymes are heated to a high temperature?The enzymes die.The shapes of the enzyme are altered or denaturedThe enzymes' amino acid sequence changes.The enzymes remain the same
- 16. Multiple ChoiceVenus flytraps produce chemicals that break down insects into usable compounds. These chemicals are most likely:HormonesLipidsEnzymesCarbohydrates
- 17. Multiple ChoiceWhich chemical is classified as an enzyme?GalactoseLipidProteaseManganese dioxide
- 18. Multiple ChoiceWhat is indicated by letter A?enzymeproductsubstrateactive site
- 19. Multiple ChoiceHow do competitive inhibitors affect enzymes?It binds to the active site, blocking the substrateIt changes the shape of the enzymeIt increases the activation energyIt decreases the activation energy
- 20. Multiple ChoiceWhich of these do NOT affect enzyme activity?TemperaturepHCompetitive InhibitorsCarbohydrates
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