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.

1. A mutant strain of yeast possesses a mutation in the nda2 gene, resulting in no production of αl tubulin. As a result, these cells would most likely (A) not duplicate their chromosomes. (B) not enter M phase. (C) not enter S phase. (D) keep the nuclear membrane intact. (E) have little or no spindle formation.

2. Numerous Xenopus cells were exposed to various amounts of ultraviolet light. Some of the resulting cells were observed to lack nucleoli. As a result, one would expect that the cell could not (A) perform cellular respiration. (B) replicate its DNA. (C) perform photosynthesis. (D) synthesize rRNA. (E) none of the above

3. Cancer treatments often involve chemicals that arrest DNA synthesis. The cancer cells are more directly affected than noncancer cells because (A) DNA synthesis does not occur in noncancerous cells. (B) DNA synthesis occurs differently in noncancerous cells. (C) treatment with these chemicals results in the cancerous cells regaining control over the cell cycle. (D) DNA synthesis occurs less frequently in the noncancerous cells. (E) DNA synthesis occurs less frequently in the cancerous cells.

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