資訊推薦

• 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 (
• 32. Amino acids can be covalently linked together by formation of a(n)  ______ bond. (A) ether (B) e
• 33. How many moles of FADH2 molecules are produced in the TCA cycle per molecule of glucose metaboli
• 34. The lipid portion of a typical cell membrane bilayer is about 3 nm thick. Predict the number of
• 35. Pyruvate dehydrogenase complex catalyzes the release of carbons.  ______from glucose. (A) 1 and
• 36. Which of the following scientists made a significant contribution to the discovery of prion? (A)
• 37.n a supercoiled DNA, a stretch of ~20 base pairs changes from the B form to the Z form. △W =_____
• 38. ______and________ are referred to as the 21st and 22nd amino acids. (A) Cys and Sec (B) Ser and
• 39. How many chiral carbons exist in o-D-glucopyranose? (A) 1 (B) 2 (C) 3 (D) 4 (E) 5
• 40. Only the________tautomeric form of ribose exists in the nucleic acid structure? (A)α-pyranose (B
• 2. 生態系統中的食物鏈能量轉換效率(transfer efficiency)通常很低，約10%。其原因何在？ (A) 多數生物己身無法消化所有被吃下的食餌 (B) 大量同化的能量(assimilat