資訊推薦

• 31. O-linked glycosylation is important in many diseases including cancer, diabetesand Alzheimer
• 32. Which of the following is a standard start codon for protein synthesis ineukaryotes?(A) AUG (B)
• 33. Which one of the following forces can maintain the quaternary structure of aprotein?(A) Electros
• 34. Which nucleosides below contain purines?(A) A, G (B) C, T, U (C) C, G (D) A, G, U
• 35. Which one of the following organelles does   NOT   contain DNA?(A) Nucleus (B) Chloroplast (C) L
• 36. Which organelles are surrounded by a double membrane?(A) Nucleus (B) Chloroplast (C) Mitochondri
• 37. Which one of the following diseases is   NOT   caused by misfolded protein?(A) Sickle-cell disea
• 38. Which description is   NOT   correct?(A) RNA is initially synthesized using a DNA template in tr
• 39. In prokaryotes, transcription is controlled in four principal ways. Which of thefollowing can co
• 40. Which of the following enzymes is   NOT   required in forming recombinant DNA?(A) Restriction en
• 41. Which of the following is contained in the promoter of the eukaryotes?(A) GC box (B) TATA box (C
• 42. Which description is   NOT   correct?(A) DNA synthesis is bidirectional. (B) The direction of DN
• 43. Five DNA polymerases have been found in (E) coli. Which of the following isprimarily responsible
• 44. Five DNA polymerases have been found in eukaryotes. Which of the following isprimarily responsib
• 45. Which one of the following molecules is the key regulator of membrane fluidity?(A) Glycolipids (
• 46. Which one of the following mechanisms can regenerates NADH inside themitochondrial matrix?(A) Ma
• 47. Which one of the following molecules is   NOT   the second messenger in thephosphoinositol signa
• 12. 下列何者在 Cl2/CCl4 的反應條件下不會產生二個立體異構物? (A) I (B) II (C) III (D) IV
• 14. In the best Lewis structure for NO +, what is the formal charge on the N atom?(A) -1(B) 0(C) +1(
• 15. Which of the elements listed below is most likely to exhibit an expanded octet inits compounds?(
• 16. Give the number of lone pairs around the central atom and the moleculargeometry of SCl2.(A) 0 lo
• 17. Use VSEPR theory to predict the geometry of the BF3 molecule.(A) linear(B) bent(C) trigonal plan
• 18. Which one of the following molecules has tetrahedral geometry?(A) XeF4(B) BF3(C) AsF5(D) CF4
• 19. Which one of the following molecules has a non-zero dipole moment?(A) BeCl2(B) Br2(C) BF3(D) IBr
• 20. Which one of the following molecules is polar?(A) PBr5(B) CCl4(C) BrF5(D) XeF2