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• 【題組】165.Why is Kelly disappointed with Susan?(A) Because Susan's videos have caused harm to cus
• 【題組】166.What does Kelly expect Susan to do in the future?(A) To be more mindful of the company'
• 【題組】167.What does Susan want to discuss with Kelly?(A) How to improve the quality of her videos.(B)
• 49. A sequence of amino acids in a certain protein is found to be –Ser–Gly–Pro–Gly–. The sequence is
• 50. Which of the following is (are) true of the oxidation of 1 mol of palmitate (a 16-carbon saturat
• 51. Which of the following peptides is more likely to be nuclear targeting signal?(A) ser-ser-thr-as
• 52. Myoglobin and the subunits of hemoglobin have______ .(A) no obvious structural relationship(B) v
• 53. Which one of the following analytical techniques does not help illuminate a gene’s cellular func
• 54. Hormone-activated phospholipase C can convert phosphatidylinositol 4,5-bisphosphate to______.(A)
• 55. Oxidative phosphorylation and photophosphorylation share all of the following except______.(A) c
• 56. A certain bacterial mRNA is known to represent only one gene and to contain about 800 nucleotide
• 57. Which of the following statements about the polymerase chain reaction (PCR) is false?(A) DNA amp
• 58. Which of the following is not true of the citric acid cycle?(A) All enzymes of the cycle are loc
• 59. Steroid receptor proteins are a class of closely-related DNA binding proteins. These steroid rec
• 60. Which of the following sequences is most likely to contain a termination signal for procaryotic
• 2. Which one of the following statements is incorrect?(A) Sodium arsenate has its formulas of Na3AsO
• 3. Ten tablets with a total mass of 0.5894 g contained saccharin (C7H5NO3S) and were dissolved in wa
• 4. Consider three identical flasks filled with different gases: Flask A, CO at 760 torr and 0°C； Fla
• 5. At elevated temperatures, sodium chlorate decomposes to produce sodium chloride and oxygen gas. A
• 6. Consider the dissolution of CaCl2: CaCl2(s)→Ca2+(aq) +2Cl ̄(aq), △H = -81.5 kJ. An 11.0-g sample
• 7. Which one of the following statements is incorrect?(A) An unknown nonmetal element with a valence
• 8. For the transition of n = 3 →n = 2 to occur in the hydrogen atom, the wavelength of the resulting
• 9. Which one of the following statements is correct?(A) SO4 is more energetically stable than XeO4.(
• 10. Consider the following reaction: H2C=CH2(g) + F2(g)→H2FC-CFH2(g), △H = -549 kJ. Please estimate
• 11. Consider three molecules: A, B, and C. Molecule A has a hybridization of sp3. Molecule B has two