5. Explain the differences in the rate law graph for an allosteric enzyme vs. a non- allosteric (Simple) enzyme? Quickly Simple vs allosteric Enzymes understand Simple Allosteric

The V vs. [S] plot for allosteric enzymes often has a ______ shape.     hyperbolic     sigmoidal     cycloidal     serpentine     parabolic

37. Consider the following energy diagram for an enzyme-catalyzed reaction. D B A C E G Which step is probably the slowest? a. A →B →C b. C D E c. E F G d. G H I

19. What is the optimal pH for catalase? Why do you think it becomes less effective at high or low pH? 20. Can you think of anywhere in the human body where enzymes would work BEST at a high pH? Please give an example and draw what that graph might look like. 21. What is the optimal temperature for catalase? Why do you think it becomes less effective at high or low temperatures? 22. Can you think of any organisms that would have enzymes specifically adapted to extreme low or high temperatures and would therefore function best at a different part of the graph? Please give an example and draw what that graph might look like.

An enzyme mechanism generates a positive charge in the transition state. Stabilization of the transition state would be increased by the presence of [Select] destabilization would be increased by the presence of [Select ] Q Search **** do 4

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6. What is a glycosyltransferase? Choose all that apply Group of answer choices Catalyzes the formation of a bond between a sugar and an amino acid An enzyme that cleaves a glycosidic bond An enzyme that catalyzes the formation of a glycosidic bond An enzyme that transfers nucleotide-sugars from the cytoplasm   7.  Which statement(s) is/are true about inverting and retaining glycosyltransferases?  a. Inverting glycosyltransferase catalyzes the epimerization of a sugar b. Inverting glycosyltransferase alters the anomeric configuration of the glycosyl donor c. Retaining glycosyltransferase never preserves the anomeric configuration of the glycosyl donor d. Inverting glycosyltransferase switch the order of acceptor and donor. e. An SN1 reaction mechanism results in exclusive retention of stereochemistry of the anomeric carbon