資訊推薦

• 7. Absorbance at______ nm is frequently used to determine the concentration of a protein. (A) 200 (B
• 8. Which of the following compounds has the highest molecular weight? (A) adenine (B) adenosine (C)
• 9. Which of the following descriptions regarding disaccharide is incorrect? (A) Sucrose is α-D-gluco
• 10. Which of the following restriction endonucleases is an isoschizomer of Xbal (TCTAGA)? (A) EcoRI
• 11. Which scientist made a significant contribution to the understanding of the structure of collage
• 12. Triton X-100 is a nonionic surfactant that denatures proteins by disrupting_________ ? (A) hydro
• 13. How many stereoisomers for a pentose? (A) 2 (B) 4 (C) 6 (D) 8 (E) 16.
• 14. A(n)_______bond links ribose to adenine in AMP. (A) ether (B) ester (C) amide (D) aldehyde (E) p
• 15. Which of the following lipids is not a major component of cellular membranes? (A) glycerophospho
• 16. TyC loops are found in (A) mRNA (B) rRNA (C) tRNA (D) miRNA (E) snRNA.
• 17. Which of the following bond-pairs within a peptide backbone show free rotation around both bonds
• 18. Which scientist made a significant contribution to the technology of PCR? (A) K. B. Mullis (B) J
• 19. Which of the following amino acids contains only one codon? (A) Ala (B) Lys (C) Tyr (D) Met (E)
• 20. B form DNA has a pitch (height per turn) of ________nm. (A) 0.10 (B) 0.15 (C) 0.34 (D) 0.54 (E)
• 21. The Northern blotting method is normally used for detection of (A) proteins (B) DNA (C) RNA (D)
• 22. Which of the following tautomeric forms is the major form of ribose in solution? (A) α-pyranose
• 23. The ribosome-binding sequence is________ in E. coli? (A) AATT (B) AAGG (C) ATGC (D) TTCC (E) TTG
• 24. Carbon monoxide (CO) is poisonous, because it tightly binds________ of the body. (A) CoQ (B) cyt
• 25. Which pair of enzymes listed below generates NADPH? (A) glucose-6-phosphate dehydrogenase and 6-
• 26. Which pair of enzymes listed below is unique to the glyoxylate cycle? (A) pyruvate dehydrogenase
• 27. The major sugars in coke are (A) glucose (B) fructose (C) galactose (D) glucose and fructose (E)
• 28. Which of the following reactions is not located in mitochondria? (A) tricarboxylic acid cycle (B
• 29. In a Lineweaver-Burk double reciprocal plot, the intercept of the y-axis equals______.(A) KM (B)
• 30. Phosphofructokinase-1 (A) is activated by ADP and citrate (B) is inhibited by ADP and citrate (C
• 31. All o-amino acids except ______contain an asymmetric o-carbon. (A) Gly (B) Ala (C) Ile (D) His (