AAMC FL 1 Exam Correct 100%

C/P #1 In the chromatography of the reaction mixture, water absorbed on cellulose functioned as the stationary phase. What was the principal factor determining the migration of individual components in the sample? - Answer Chromatography - stationary phase amount of hydrogen bonding to the stationary phase will determine the *relative amount of hydrogen bonding* to the stationary phase will determine the relative rate of migration of the various components in the sample C/P #2 What assumption is being made if scientists conclude that aspartic acid was formed by the prebiological synthesis in the passage? - Answer C: because if apastaric acid was formed by the pre-biological synthesis then it is implied that it's reactants will be available on primitive earth as well. Answer in passage C/P #3 According to the developed chromatography plate shown below, what is the approximate Rf value of aspartic acid? - Answer Rf = distance spot moved/distance solvent front moved C/P #7 If Reaction 2 (Figure 4) is repeated with HCl and the compound shown below, which of the following compounds is NOT a direct product (without rearrangement)? - Answer The reactions are shown in figure 4, compare the products in figure 4 to answer choices C/P #8 If a solution containing the compounds shown in Figure 4, is injected into a gas-liquid chromatograph, the first peak observed in the gc trace is attributable to which compound? - Answer Gas chromatography seperates by boiling point (molecular weight) smaller (lower molecular weight) appears first on GC trace Smaller - lower boiling point Larger - higher boiling point C/P #9 What is the product of the reaction of Compound 1 (shown below) with HBr by the pathway shown in Figure 3? - Answer Orient the groups by priority (atomic number) Highest priority has highest atomic number Positioning of H should be dashed, if wedged it will be the other configuration R- clockwise S-counterclockwise SN2 reaction, there will be an inversion of stereochemistry , therefore R configuration will become S configuration C/P #26 Why is the velocity of blood flow slower in capillaries than in arteries? - Answer total cross sectional area was greater in capillaries Fluids will flow more quickly through narrow passages and more slowly through wider ones. C/P #30 The production of a variety of opsins functions to: - Answer Confused opsins w/ rhodopsins in passage opsins were related w/ cones (detect color) C/P #31 The environment of the retinal binding site is most likely: - Answer What type of molecule is shown in Figure 1? Hydrophobic (contains carbon chains) C/P #32 The source of the phosphate groups that are added to rhodopsin is: - Answer Kinase - transfers phosphoryl groups from a different source (e.g. ATP, GTP, etc.)