資訊推薦

• 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__
• 35.Wich enzyme uses FAD/FADH2 in the metabolism of glucose to CO2? (A) pyruvate dehydrogenase comple
• 36. Trypsin cleaves proteins at sites next to________. (A) Lys and Arg (B) Tyr, Trp, and Phe (C) Asp
• 37. All of the following are paired with their preferred substrate except: (A) brain: glucose (B) he
• 38. The cloverleaf structure of tRNA includes (A) an acceptor stem (B) a TuC-loop (C) a D-loop (D) a