資訊推薦

• 10.Which of the following restriction endonucleases is an isoschizomer of Xbal (TCTAGA)?(A) EcoRI ((
• 11.ch of the following proteins is involved in scrapie? (A) collagen (B) elastin (C) kerati (D)prion
• 12. NP-40 is a nonionic surfactant that denatures proteins by disrupting. _______? (A) hydrogen bond
• 13. How many stereoisomers for an aldohexose? (A) 2 (B) 4 (C) 8 (D) 16 (E) 32.
• 14. The chemical bond between ribose and base of a nucleotide is a(n)_______bond. (A) ether (B) este
• 15. Which of the following lipids are especially common in the membranes of brain and nerve cells? (
• 16. In humans, mitochondrial DNA encodes_______ proteins. (A) 37 (B) 22 (C) 13 (D) 2 (E) 0.
• 17. The catalytic triad of serine proteases consists of____,____,and____? (A) Ser, His, and Asp (B)
• 18.Which scientist proposed the model of chemiosmotic coupling? (A) P. Mitcheli (B) J. D. Watson and
• 19.Which of the following amino acids contains only one codon? (A) Ala (B) Lys (C) Tyr (D) Trp (E) A
• 20. B form DNA has______residues per turn. (A) 1 (B) 2 (C) 3 (D) 5 (E) 10
• 21. The Southern blotting method is normally used for detection of (A) proteins (B) DNA (C) RNA (D)
• 22. Which of the following tautomeric forms of fructose exists in sucrose? (A) α-pyranose (B)β-pyran
• 23.Oselta mivir (tamiflu) is effective in treating HIN1 influenza infection, because it has a struct
• 24. Which of the following compounds is frequently used by emergency medical personnel as an antidot
• 25. h pair of enzymes listed below generates NADPH? (A) glucose-6-phosphate dehydrophogluconate dehy
• 26. How many CO2 molecules are released for each acetyl-CoA entering the glyoxylate cycle in plant c
• 27. most important regulatory step in glycolysis is catalyzed by_____. (A) hexokinase (B) pyruglycer
• 28.Which of the following enzymes is not involved in the glyoxylate cycle? (A) aconitase (B) isocitr
• 29. In a Lineweaver-Burk double reciprocal plot, the intercept of the x-axis equals______.(A) KM (B)
• 30. phofructokinase-1 (A) is activated by ADP and citrate (B) is activated by ADP andhosphate (C) is
• 31. Which amino acid lacks a chiral a-carbon? (A) Gly (B) Trp (C) Tyr (D) His (E) Pro.
• 32. Amino acids can be covalently linked together by formation of a(n)_______. bond. (A) ether (B) e
• 33. many moles of FADH2 mnolecules are produced in the TCA cycle per molecule of acetyI-CoA oxidized
• 34.The enzymes that catalyze the hydroxylations of proline and lysine residuesin collagen requires__