B) Molecule A is 02; Molecule B is methane (CH4) C) Molecule A is C02; Molecule
ID: 257957 • Letter: B
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B) Molecule A is 02; Molecule B is methane (CH4) C) Molecule A is C02; Molecule B is a charged a D) Mokecule A is glocose: Molecule B is a chloride ion 40. Which of the ollowing best predicts the identity of car For Qwstlos 36 coider the description below: are A) Molecule A is a polar amino aeid: Molecule B is a and GABA (both molecules d1, Why doss the initial transport rate platcau 41. in the curve for J6. GARA prouction is e by feedhack inhibition tha has no direst impact on production of glutamane. Which is an A) The gradient is removed over time B) The molecules are degraded D) There isn't enough available energy E) All of these are correct )Clutamane decarboxylase activity will be reduced i B) Glutamate decarboxylase activity will be increased if C) Glutamine synthetase activity will be reduced if GABA Glutamine synthetase activity will be increased if investigated the ability of isdividuals to digest or fferent amounts of the drug, flutamide, which is a the catabolic reaction that occurs to digest flutamide in the cell: GABA concentration is high metaboline d drnug used to treat prostate cancer. The diagram below represents E) Glutamine concentration will be decreased if GABA Consider the following description for Question 37-39. A saineater salmon ravels imio freshwater stream to loy exs e SUNEr frshwater emers the gls, the boodstream ts cells are 0.5% sal.Consider the results from their study for Question 42-44. 37. What is the tonicity of the bloodstream compared to the cells after the fish enters the freshwater stream? A) Hypertonic B) Hypotonic C)Isotonic 38. When entering freshwater, what problem will the fish encounter with water balance? A) Dehydration, due to water leaving the cells B) Dehydration due to water entering the cells C) Tissue swelling, due to water leaving the cells D) Tissue swelling, due to water entry into the cells E) The fish will not have a problem with water balance 0 100 200 300 400 500 600 700 800 39. What type of urine should the fish in the previous question generate to return its bloodstream to an isotonic state? 42. What is the role of flutamide hydroxylase in this reaction? A) It is the substrate B) It is the product C) It is a cofactor D) It is an enzyme More dilute urine (lower salt concentration) A) B) More concentrated urine (higher salt concentration) Urine with equal concentration to the bloodstream (0.1%) C) The graph below depicts the rate of transport of two organic compounds across a membrane. Use this graph to answer Question 40 and 41. 43. What have the researchers manipulated in the study presented in the A) The amount of enzyme available B) The amount of substrate available C) The time for the reaction to occur D) The amount of inhibitor available 44. Why does individual C exhibit such low reaction rates? Choose the best answer. A) Individual C has a much lower body temperature B) Flutamide concentrations are lower in Individual C C) Individual C produces fewer functional flutamide hydroxylase molecules Flutamide hydroxylase is more likely to bind to flutamide in individual C 10 D)Explanation / Answer
36) The correct option is C which states that Glutamine sythetase activity will be reduced if GABA concentration is high. This is so because feedback inhibition process depends on the formation of first substrate molecules involved in that metabolic pathway. So to inhibit this metabolic process we should inhibit the first enzyme of this metabolic pathway.
37) The correct answer for this question is option A i.e Hypotonic. This is so because Hypotonic solution is the solution that has less amount of solute molecule in comparison to it's surrounding environment. And the salmon fish has less concentration of salt molecules in it's bloodstream in comparison to the it's cell. Therefore bloodstream is Hypotonic in nature.
38) The correct option for this question is option C which states that tissue will swell up due to entry of water molecules inside the cell. This is so because to maintain an equilibrium between the external and internal environment of the cell the water will move from an area of high water potential to low water potential area i.e. from bloodstream to tissues to establish an equilibrium between the two environment.
39) The correct option is D. This is so because the after attaining the isotonic condition the urine will be equally concentrated that of bloodstream.
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