22. Which of the followings is a DNA molecule?
(A)
(B)
(C)
(D)

23. Which of the following descriptions of a "virus" is   INCORRECT  ? (A) A virus is a small infectious agent that can replicate only inside the living cells of an organism. (B) A virus is composed of a protein coat and nucleic acid. (C) The genetic material of a virus is either a double-stranded DNA or a single-stranded RNA. (D) During virus replication, some virus particles may not contain the viral genome.

複選題24. Which of the following methods is used to detect the DNA-protein interaction? (A) Electrophoretic mobility shift assay (B) Yeast-two-hybrid system (C) MALDI-TOF analysis (D) DNA cloning

25. In which phase of the cell cycle does DNA replication occur? (A) GO (B) G1 (C) S (D) M

26. DNA methylation is associated with (A) CAT box. (B) CpG island. (C) TATA box. (D) enhancer.

27. One of the strong pieces of evidence for the process of gene duplication and mutation is the occurrence of (A) pseudogenes. (B) introns. (C) transposons. (D) heterochromatin.

28. If you want to prepare a protein gel for electrophoresis, you need to have the followings:   (i)   polyacryamide   (ii)   SDS   (iii)   ammonium sulfate   (iv)   TEMED(A) (i) and (ii) (B) (ii) and (iii) (C) (iii) and (iv) (D) All 

29. The fluidity of the lipid side chains in the interior of a bilayer is generally increased by: (A) a decrease in temperature. (B) an increase in fatty acyl chain length. (C) an increase in the number of double bonds in fatty acids. (D) the binding of water to the fatty acyl side chains.

30. Fluorescence resonance energy transfer (FRET) analysis can provide information on: (A) enzyme kinetic (B) protein stability (C) protein-protein interaction (D) open the ion channels

31. Which of the following molecules is able to translate proteins? (A) DNA polymerase I (B) Proteinase K (C) RNA polymerase II (D) Ribosome

32. Which of the following statements is   NOT   true? (A) Histones help compact chromosomes (B) Histones help regulate gene expression in prokaryotes (C) Histones have N-terminal tails that can be covalently modified (D) Histones exist as octamers

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