38. microRNAS
(A) are a class of exogenous RNAs
(B) small and highly conserved noncoding RNAS
(C) control gene expression post-translationally

39. A short RNA molecule was isolated that demonstrated a hyperchromic shift indicating secondary structure. Its sequence was determined to be "AGGCGCCGACUCUACU". What DNA sequence would give rise to this RNA molecule through transcription? (A) TCCGCGGCTGAGATGA (B) AGTAGAGTCGGCGCCT (C) UCCGCGGCUGAGAUGA (D) AGUAGAGUCGGCGCCU

複選題40. During elongation of a polypeptide chain (A) the tRNA moves from one codon of the mRNA to the next (B) the ribosome move closer to the 3' end of the mRNA (C) the growing polypeptide chain is passed from the tRNA of the A site to the amino acid present in P site (D) tRNAs enter empty P site

41. Suppose you are labeling a population of cells growing asynchronously with [H]thymidine. G₁ is 6 hour, S is 6 hours, G2 is 5 hours, and M is 1 hour. What percentage of the cells would have labeled mitotic chromosomes if you chased the cells for 18 hours? (A) One-third of the cells (B) None of the cells (C) Two-third of the cells

42. Would you agree with the statement that the centrosome plays a key role in determining the rates of lengthening and shorting of the microtubules of an animal cell? (A) Yes (B) No

43. Would you expect the greenhouse effect (an increase in the CO2 content of the atmosphere) to have a greater effect on C4 plants or C3 plants? (A) C4 plants (B) C3 plants

44. How does the p53 gene protect against the development of cancer? (A) The p53 is normally expressed at a high level but this decrease if the DNA is damaged. (B) If the DNA is not repaired, the p53 gene can induce apoptosis of the cell. (C) The p53 protein can activate genes that cause the inhibition of the cyclin-dependent kinases which are needed for the cell to proceed through the restriction point in S phase.

45. Molecular weight analysis of a protein yields the following information: (Guanidinium chloride is a chaotropic (denaturing) reagent and 2-mercaptoethanol can reduce disulfide bonds.)What can you deduce about the protein's quaternary structure? (A) Dimer of 100,000-M.. (B) Each 100,000-M. unit is dimer of a 25,000-M, and 75,000-M, protein jointly covalently by disulfide bonds. (C) Dimer of a 25,000-M, and 75,000-M, protein. (D) Monomer of 200,000-M..

46. All of the following can be true of cloning vectors EXCEPT that they (A) are plasmid that slip into a host cell. (B) are plasmids that accept foreign DNA.(C) can be engineered to contain multiple cloning sites. (D) are portions of the main bacterial chromosome. (E) can be viruses.

47. All of the following are involved in Polymerase Chain Reaction (PCR) EXCEPT (A) free nucleotides. (B) DNA templates. (C) high temperature. (D) RNA polymerase. (E) low temperature.

48. Which is false about the wobble effect? (A) It explains why and how there can be fewer than 64 kinds of transfer RNA molecules. (B) It allows the third codon to vary if the first two codons in the anticodon follow the base-pair rule. (C) It indicates that transfer RNA combines with either the small or large subunit of ribosomes. (D) It permits certain amino acids to be specified by more than one codon.

115年 - [無官方正解]115 國立清華大學_碩士班入學考試試題_生命科學暨醫學院甲組(生物與醫學科學組)：分子生物學#142697

114年 - [無官方正解]114 國立中正大學_碩士班招生考試試題_生物醫學科學系：分子生物學#138414

114年 - [非官方正解]114 國立清華大學_碩士班入學考試試題_生命科學暨醫學院甲組(生物與醫學科學組)：分子生物學#132699

113年 - [無官方正解]113 國立中正大學_碩士班招生考試試題_生物醫學科學系：分子生物學#136961

113年 - [非官方正解]113 國立成功大學_碩士班招生考試_藥理學研究所 :分子生物學#126004

113年 - [非官方正解]112 國立臺灣大學_碩士班招生考試：分子生物學(B)#118906

112年 - [非官方正解]112 國立臺灣大學_碩士班招生考試：分子生物學(C)#120020

112年 - [非官方正解]112 國立臺灣大學_碩士班招生考試：分子生物學(B)#120007

112年 - [非官方正解]112 國立臺灣大學_碩士班招生考試：分子生物學(D)#118608

112年 - 112 國立臺灣大學_碩士班招生考試：分子生物學(A)#118594