題庫堂
檢索
題庫堂
首頁
數學
英文學習
政治學
統計學
經濟學
藥理學
中醫藥物學
財政學
法學知識
公共行政
警察學
BI規劃師
財務管理
公共衛生學
工程經濟學
電力電子學
當前位置:
首頁
25. What is the product of the following reaction? (A) (S)-1,2-propanediol (B) (R)-1,2-propanediol
問題詳情
25. What is the product of the following reaction?
(A) (S)-1,2-propanediol
(B) (R)-1,2-propanediol
(C) racemic mixture of 1,2-propanediol
(D) 1,3-propanediol
參考答案
答案:
[無官方正解]
難度:
計算中
-1
書單:
沒有書單,新增
上一篇 :
4. Which of the following best describes the structure of a nucleosome?(A)DNA wrapped around an octo
下一篇 :
5. Which of the following sequences of DNA is most likely to form Z-DNA?(A) (B) (C) (D)
資訊推薦
23. Which of the following statements is true?(A) a triple bond is composed of two a bonds and one x
24. Which of the following statements best describes BF3 and NF3? (Nole: Geometry refers tothe elect
25. Which of the following molecules has a dipole moment?(A)SF4 (B)CF4 (C)XeF4 (D)SF6(E)XcF2
26. How many resonance structures does the have?(A)0 (B)1 (C)2 (D)3 (E)4
27. The first ionization energy of magnesium is approximately 700 kJ/mol. What is a goodestimate for
28. For any operating concentration cell, which of the following statements is true?(A)E and E°must
29. For any galvanic cell to operate, which of the following statements is true?(A)△G° and E° must b
30. In which case must a reaction be spontaneous at all temperatures?(A)△H is positive, and △S is po
31. Which is the percent dissociation of HF in a solution containing both 1.0 M HF and 1.0 MNaF ? (A
32. Which is the mathematical expression of solubility product(Ksp) for the molarsolubility(S) in (m
2. Heat energy of 743 J is needed to raise the temperature of 5 moles of an ideal gas by 2 K at cons
6. The human genome is though to have about how many genes?(A)10,000(B) 25,000(C) 50,000(D)100,000(E
7. Which of the following RNAs is the least abundant in a typical cell?(A)mRNA(B) rRNA(C) snRNA(D)tR
8. The following types of RNA are common to all organisms, except:(A)mRNA(B) rRNA(C) snRNA(D)tRNA(E)
9. The following enzyme is responsible for the bulk of DNA synthesis during replication.(A)DNA Polym
10. In E. coli,(A)the leading strand is synthesized in one piece while the lagging strand is synthes
11. Which of the following activities does E. coli DNA polymerase III lack?(A)5' → 3' poly
12. The primer for in vivo DNA replication is:(A)The 3' hydroxyl of the preceding Okazaki fragm
13. Which of the following characteristics is not associated with E. coli primase?(A)it synthesizes
14. Which of the activities of DNA Polymerase I is most important in removing the primer?(A)Polymera
15. The enzyme that attaches the Okazaki fragments together is called(A)ligase.(B) primase.(C) DNA p
16. Replication of eukaryotic DNA(A)must occur faster than replication of prokaryotic DNA(B) must be
17. In eukaryotic replication, the RNA primers are degraded by:(A)the 5’ to 3’ exonuclease activity
18. Which of the following correctly describes a difference between RNA & DNA polymerases?(A)RNA pol
19. At what point does the sigma (σ) subunit of RNA polymerase released from the core enzyme?(A)Prio