資訊推薦

• 39. Angiosperms are the most successful terrestrial plants. This success is due to all of the follow
• 40. Which of the following distinguishes cardiac muscle from both smooth and skeletal muscle?(A) Its
• 41. In the sarcomeres of skeletal muscle fibers, Ca2+ binds to a site on the(A) Z line. (B) myosin h
• 42. Which of the following receptors is incorrectly paired with its category?(A) cone-deep-pressure
• 44. Which of the following statements is true about control mechanism in eukaryotic cells?(A) Lampbr
• 43. Where along the kidney tubule is glucose reabsorbed from the filtrate back into the blood?(A) Bo
• 46. The yolk sac of humans ______.(A) stores nutrients to support the developing embryo(B) is eviden
• 47. What is the function of the polar bodies that are produced during oogenesis?(A) They are the mec
• 45. Which of the following genes establishes the overall anterior-posterior axis of the embryo?(A) b
• 38. Crossing-over occurs during which phase of meiosis?(A) prophase I (B) anaphase I (C) telophase I
• 48. Which of the following effects could result from activation of the sympathetic nervous system?(A
• 49. The clonal selection theory implies that(A) related people have similar immune responses.(B) ant
• 51. Why can normal immune responses be described as polyclonal?(A) Blood contains many different ant
• 50. A transfusion of type A blood given to a person who has type O blood would result in(A) the reci
• 52. There are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. This is best explainedby
• 54. What are polyribosomes?(A) ribosomes associated with more than one tRNA(B) aggregations of vesic
• 53. As a ribosome translocates along an mRNA molecule by one codon, which of the following occurs?(A
• 56. The following scientists made significant contributions to our understanding of the structure an
• 47.右圖中甲、乙、丙、丁是有關儒家思想發展的四個階段，請問，其中「丁」階段使儒學陷入低潮的最主要原因是什麼？(A)士人喜好清談，蔑視傳統與禮教(B)統治者採道家治國，強調無為而治(C)外來宗教信仰盛
• 57. Of these steps, which one occurs earliest in the process of producing recombinant DNA?(A) Human
• 58. The major factor that restricts a fundamental niche to a realized niche is:(A) climate.(B) compe
• 55. Why is it difficult to get bacteria to express genes directly from eukaryotic DNA?(A) Eukaryotic
• 59. The high levels of pesticides found in birds of prey is an example of(A) chemical cycling throug
• 5.Which if the following species has the largest dissociation energy?(A) O2 (B) (C) (D) (E)
• 61. The fundamental difference between materials and energy in an ecosystem is that(A) energy is cyc