PracticeExam2

D phosphorylate serines and threonines e all of the

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d. phosphorylate serines and threonines. e. all of the above. 19. Random coil is a protein structure that is: a. always changing in a protein. b. a solid structure in a particular protein. c. part of the protein in motion. d. tightly coiled. e. all of the above. 20. The newly discovered sulfliimine bond in collagen-IV is a bond between methonine and hydroxylysince. It is a: a. single bond. b. double bond. c. triple bond. d. peptide bond. c. glycosidic bond. 21. In protein structure, motifs are: a. in domains. b. made up of domains. c. motile portions of proteins. d. composed of three amino acids. 22. Alpha/Beta protein families are: a. made of about equal amounts of alpha and beta. b. have alpha separated from beta. c. using alpha to connect to parallel beta structure. d. using alpha to connect to non-parallel beta structure. e. using beta to connect to parallel alpha structure. 23. In an equilibrium dialysis experiment the concentration of free ligand on both sides of the dialysis apparatus is: a. larger on the protein side. b. smaller on the protein side. c. the same on both sides. 24. The effect of 2,3-bisphosphoglycerate is to make hemoglobin-A take more of the: a. R state. b. disordered state. c. cream puff state. c. T state. d. Florida State. 25. Several antibodies (immunoglobins) bind their antigens (ligands ) with different K d the one with the highest affinity is the one whose K d is: a. 3 x 10 -2 . b. 4 x 10 -5 . c. 5 x 10 -9 . d. 3 x 10 5 . e. 5 x 10 9 . 26. The k cat /K M values of all enzymes indicate that enzymes work as fast as: a. a jet fighter plane. b. a passenger plane. c. molecular diffusion. d. product can be removed.
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d phosphorylate serines and threonines e all of the above...

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