14. The functions of poly（Ａ） tail   do not   include:
(A) Half-life of mRNA
(B) Splicing
(C) mRNA transport
(D) Enhanced transcription
(E) Increased translatability

15. About siRNA-mediated RNA interference, which of the following statement is   not true  ? (A) Needs trigger dsRNA (B) Dicer cuts trigger dsRNA into 21-23 nt siRNA (C) The sense-strand of siRNA is delivered to RISC for base-paring with target mRNA (D) Ago2 (slicer) in RISC has RNase H-like activity and cleaves target Mrna

16. About RNA editing in lower eukaryotes, which statement is   not true  ? (A) Could be insertion or deletion of U (B) Needs guide RNA (gRNA) to direct editing (C) The second gRNA hybridizes near the 5'-end of edited regions (D) Most of the new base pairs are wobble C-U pairing.

17. Which of the following is   not   involved in the generation of microRNA? (A) Ago2 (B) Dicer (C) Drosha (D) Trigger ssRNA (E) Stem-loop dsRNA precursor

18. Which of the following statement concerning the Ac-Ds of maize is   not true  ? (A) These DNA elements can induce chromosome breakage (B) These DNA elements can induce the formation of dicentric chromosome (C) Ac element transposes by a replicative mechanism (D) Ds element cannot induce chromosome breakage by itself (E) Ds element cannot transpose by itself

19. Which of the following molecules serves as a primer for reverse transcriptase during retroviral replication? (A) host snRNA (B) viral RNA (C) host tRNA (D) viral DNA (E) host DNA

20. Which one of the following process requires a RecA activity (A) activating immunoglobulin gene rearrangement (B) resolving a Holliday junction during recombination (C) resolving cointegrate form during transposition (D) activating SOS gene expression (E) Integration of λ

21. Which of the following enzymatic activities is involved in replicating the ends of eucaryotic chromosomes? (A) DNA-dependent DNA polymerase (B) RNA-dependent RNA polymerase (C) RNA-dependent DNA polymerase (D) Klenow enzyme (E) DNA-dependent RNA polymerase III

22. 5-bromouracil (a base analog) induces mutations by (A) removing bases from DNA. (B) inducing tautomeric shifts. (C) inducing anti-syn transitions. (D) intercalating into the DNA. (E) inactivating repair enzymes.

23. Which of the following repair mechanisms is a damage bypass mechanism, not an actual repair mechanism? (A) DNA photolyase (B) base excision repair (C) nonhomologous end joining (D) mismatch repair (E) recombination repair

24. Four different single-stranded plasmids, A, B, C, and D are added to a tube containing substrates for DNA replication. Oligonucleotides complementary to the plasmids A, B and C were annealed to the respective plasmids. Then, plasmid A is preloaded with DNA polymerase III holoenzyme, and plasmid B is preloaded with β-clamp. What is the order of plasmid replication? (A) All plasmids replicate at the same time. (B) Plasmids A and B replicate first and then plasmids C and D. (C) Plasmid A replicates first and then plasmid C, and plasmid D is the last replicated one. Plasmid B will not be replicated. (D) Plasmid A replicates first. Plasmids B, C and D replicate later. (E) Plasmid A replicates first, followed by plasmids B and C (in order). Plasmid D will not be replicated.

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