23. Which following factor can activate phosphorylase kinase?
(A) selenium
(B)
(C)
(D)
(E)

24. Which following enzyme product is required for bilirubin metabolism? (A) hexokinase (B) phosphofrutokinase-1 (C) UDP-glucose dehydrogenase (D) glucose 6-phosphate dehydrogenase (E) phosphofructokinase-2

25. When human cells synthesize cysteine amino acid, there are two amino acids needed for the biosynthesis. What are these two amino acids? (A) methionine and alanine (B) methionine and serine (C) glutamine and glycine (D) serine and glycine (E) arginine and aspartate

26. Which following factor is an important reactant for human asparagine synthetase to generate asparagine? (A) (B) arginine (C) glutamate (D) lysine (E) glutamine

27. _____is   NOT   involved in intron removal and the processing of mRNA precursors into mRNA.(A) U2 snRNA (B) U3 snRNA (C) U4 snRNA (D) U5 snRNA (E) U6 snRNA 

28. A mutation is any change in the base sequence of the DNA. Which one of the following descriptions about mutations is   WRONG  ? (A) An adenosine replaced by a cytidine is a "transversion" mutation (B) An adenosine replaced by a guanosine is a "transition" mutation (C) A nonsense mutation results in a different amino acid being inserted in the protein (D) Silent mutation means a change at the DNA level that does not result in any change of amino acid in the encoded protein. (E) All are right.

29. In leucine zipper motifs, leucine residues occur at every (A) 4th position (B) 5th position (C) 6th position (D) 7th position (E) 8th position.

30. Oncologists employ 5-fluorouracil (5-FU) in chemotherapy. Which one of the following 5-FU derivates can inhibit thymidylate synthase? (A) 5-FUTP (B) 5-FdUTP (C) 5-FUDP (D) 5-FUMP (E) 5-FdUMP

31. Transamination requires which of the cofactors (A) Mg, (B) B12, (C) Fe, (D) PLP, (E) NAD

32. S-adenosylmethionine is involved in the transfer of (A) CH3, (B) CH2OH, (C) CHO, (D) COOH, (E) NH2

33. Which of the following methods was NOT invented to increase the throughput of DNA deep sequencing? (A) Pyrosequencing, (B) Sequencing by ligation, (C) Sequencing by synthesis, (D) Sanger sequencing, (E) semiconductor sequencing

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