63. The carbohydrate moiety is always attached to glycoproteins through _______.
(A) aspartate, glutamate or tyrosine
(B) tryptophan, glutamine or alanine
(C) cysteine, phenylalanine or histidine
(D) asparagine, serine or threonine
(E) valine, leucine or isoleucine

複選題29. Histones are found in eukaryotic cell nuclei that package and order the DNA into structural units called nucleosomes. They are usually rich in _______, and they interact with DNA via _______. (A) lysine and arginine; ionic bonds (B) glutamic acid and aspartic acid; hydrogen bonds (C) alanine and glycine; ionic bonds (D) lysine and arginine; hydrogen bonds (E) glutamic acid and aspartic acid; ionic bonds

30. The binding of _______ with lac repressor can activate the transcription of lac operon. (A) arabinose (B) isopropyl β-thiogalactoside (C) tryptophan (D) β-galactosidase (E) mannose

61. A mixture of four amino acids is separated by using a cation exchanger with an elution gradient of increasing NaCl solution. What is the correct elution sequence? (A) Asp, Lys, Arg, Ser(B) Asp, Ser, Lys, Arg(C) Asp, Arg, Ser, Lys (D) Ser, Asp, Arg, Lys(E) Lys, Arg, Ser, Asp

62. For an α-has the sequence : +H3N-Asp-Trp-Gln-Leu-His-Val-Phe-Ala-Lys-Val-Glu-COO-, the carbonyl oxygen (in the peptide bond) of the histidine residue is hydrogen bonded to the amide nitrogen of _______. (A) Trp(B) Lys(C) Val(D) Gln(E) Leu

64. Which of the backbone repeated units of polysaccharides is not correct? (A) Amylose: (α1-4) Glc (B) Dextran: (α1-6) Glc (C) Glycogen: (α1-4) Glc (D) Cellulose: (β1-4) Glc (E) Chitin: (β1-4) Glc

65. Taking one mole of glucose through glycolysis and the citric acid cycle generates: (A) 6 CO2, 8 NADH/H+, 1 FADH2 and 1 ATP (B) 6 CO2, 8 NADH/H+, 1 FADH2 and 2 ATP (C) 6 CO2, 8 NADH/H+, 2 FADH2 and 4 ATP (D) 6 CO2, 10 NADH/H+, 2 FADH2 and 2 ATP (E) 6 CO2, 10 NADH/H+, 2 FADH2 and 4 ATP

66. Which of the following is a hetero-polysaccharide? (A) Cellulose (B) Chitin (C) Glycogen (D) Hyaluronate (E) Starch

67. Glycoaminoglycans consist of a linear chain of repeating disaccharides. Which of the following polysaccharide is not glycoaminoglycans? (A) Chondroitin sulfate(B) Keratan sulfate(C) Dermatan sulfate (D) Heparin(E) Sialic acid

68. Gluconeogenesis synthesizes glucose, while glycolysis catabolizes glucose. It is evident that gluconeogenesis and glycolysis must be controlled in reciprocal fashion. Which of the following enzymes for glycolysis are not used in the gluconeogenic pathway?①Hexokinase②Phosphofructokinase③Phosphoglycerate kinase ④Triosephosphate isomerase⑤Pyruvate kinase (A)①②③(B)①②④(C)①②⑤(D)②③⑤(E)③④⑤

69. The potent allosteric activator for phosphofructokinase-1 in glycolysis is _______.(A) fructose 1,6-bisphosphate (B) citrate (C) ATP (D) fructose 2,6-bisphosphate (E) acetyl-CoA