資訊推薦

• 22. CREB contains the following structural motif:(A)Helix-turn-helix(B) β−barrel(C) Zinc finger(D)Le
• 23. The eukaryotic TATA-binding protein (TBP) functions in a manner similar to(A)sigma (σ) factor in
• 24. Capping of eukaryotic mRNA(A)occurs at the 5' end.(B) occurs at the 3' end.(C) occurs
• 25. Polyadenylation of eukaryotic mRNA(A)occurs at the 5' end.(B) occurs at the 3' end.(C)
• 26. The sequences in eukaryotic DNA known as introns are(A)those included in the final sequence of m
• 27. Which of the following codons does not code for an amino acid?(A)AUG(B) UAA(C) CAU(D)GUU(E) All
• 28. A tRNA was determined to have the following anticodon sequence:3'−GAI−5' (I represents
• 29. The mRNA must contain the following to allow for initiation of protein synthesis in E. coli.(A)A
• 30. An aminoacyl-tRNA is initially bound to the ribosome(A)at the A site on the 50S subunit(B) at th
• 31. At what point does the formylation reaction take place to produce N-formylmethionine?(A)On the f
• 32. What is the start codon on the mRNA for prokaryotic translation?(A)AUG(B) UAA(C) UAG(D)UGA
• 33. The protein which marks proteins for degradation is called:(A)Chaperonin(B) Ubiquitin(C) Proteas
• 34. Identify the component required for the chain initiation step of protein synthesis.(A)DNA helica
• 35. A plasmid is(A)a virus that infects bacteria.(B) a piece of DNA derived from two or more sources
• 36. The "c" in cDNA stands for this word:(A)Complete.(B) Circular.(C) Complementary.(D)Chr
• 37. In humans, pyruvate can be converted to(A)acetyl-CoA only.(B) lactate only.(C) ethanol only.(D)a
• 38. The following item was the most important one for the development of PCR as a commerciallysucces
• 39. What is the net ATP yield per glucose during glycolysis?(A)1(B)2(C)3(D)4(E)6
• 40. What is the relationship between glycolysis and cancer?(A)cancer cells lack a glycolytic pathway
• 41. When mitochondria are actively carrying out aerobic respiration(A)the pH of the matrix is greate
• 42. The ultimate electron acceptor in the electron transport chain is(A)NAD+.(B) FAD.(C) oxygen.(D)A
• 43. Chemiosmotic coupling involves this process:(A)Using an electron gradient to synthesize ATP.(B)
• 44. Which of the following are related for a given enzyme?(A)Vmax, KM, and percentage of α-helix(B)
• 45. The KM of hexokinase for glucose = 0.15 mM and for fructose, KM = 1.5 mM. Which is thepreferred
• 46. The value of changes in(A)competitive inhibition(B) noncompetitive inhibition(C) both forms of