20. Consider an enzyme catalyzed reaction: AB where A has a blue colour, B Is co
ID: 705480 • Letter: 2
Question
20. Consider an enzyme catalyzed reaction: AB where A has a blue colour, B Is colourless and the enzyme used is E. Select the false statement A) A loss of blue colour with time from the solutio is added to a solution of A B) As the enzyme reaction continues, you would expect the enzyme velocity (Vo) to dec possibly because of lowered substrate concentration and the blue colour of the solution wi become lighter and lighter n is indicative of the enzyme reaction when E rease, C) If the Vo values are calculated by running the enzyme reaction using several differe concentrations of A, a plot of Vo vs [A] will yield a hyperbola which approaches a limiti velocity called the Vmax. D). If the vmax for the reaction is 10 x 10 3 moles / min and Km for the reaction is then increasing the substrate concentration from 2 x 10 3M to 4 x 10 3M will double the enzyme velocity (Vo). 21.The determination of whether a protein binds to another protein depends on: a Surface area buried during interaction b.Chemical composition of the buried surfaces c.The calculated accessible surface area (ASA) of a protein e.All of the above d. A and B only 22.Which of the following statements concerning Leghemoglobin (LH) is false? a.when compared to horse hemoglobin there are large scale rotations in each helix within LH b. the change each in rotation of each helix is thought to have occurred independently as the result of many amino acid changes occurring one at a time over long periods of time c. LH bears a striking resemblance to a light harvesting complex in cyanobacteria d.phycocyanins are large protein complexes which utilize a chromophore instead of a heme groupExplanation / Answer
20) (D) rest all are correct
21) (E) all are correct
22) (D) they utilize a heme group
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