資訊推薦

• 26. 下列反應何者會進行 取代反應? (A) I (B) II (C) III (D) IV
• 5. Which amino acids carry a positive charge at pH 7?(A) Arg, His, Lys (B) Asp, Glu (C) Asn, Gln(D)
• 6. Which amino acids are not aromatic but have a ring structures in its side chain?(A) Phe, Tyr, Trp
• 7. Which amino acids have a secondary hydroxyl group that can be phosphorylated?(A) Serine (B) Threo
• 8. Which amino acids have a functional sulfhydryl group in it?(A) Met (B) Cys (C) Thr (D) Tyr
• 9. During the separation of protein molecules, which method will have smaller molecules being eluted
• 10. Given a polyalanine of 15 residues long, what kind of structure would you expect it to be in neu
• 11. When a polymer of 18-residue forms an α-helix, how many repeats would you expect it to be?(A) 3
• 12. How many cycle repeats would you expect to find from a β-sheet of 18 residues long?(A) 5 (B) 7 (
• 13. What amino acid residues are most likely to be found at type I or type II β-turns?(A) Ala (B) Gl
• 14. Which cofactor is required during the formation of collagen?(A) Retinol (B) Tocopherol (C) Ascor
• 15. Which amino acid residues are more likely to be found at the N-terminus of an α-helix?(A) D or E
• 16. What kind of protein secondary structure is human hair made of?(A) α-helix (B) β-sheet (C) β-tur
• 17. What kind of protein secondary structure is spider silk made of?(A) α-helix (B) β-sheet (C) β-tu
• 18. What proteins are involved in protein folding?(A) Ribonuclease A (B) Myoglobulin (C) Chaperonins
• 19. Which protein denaturant can unfold a protein reversibly?(A) Acid or alkaline (B) Organic solven
• 20. What forces drive the formation of protein tertiary structure?(A) Hydrophobic interaction (B) El
• 21. Which statement regarding to enzymes below is incorrect?(A) Most enzymes are proteins.(B) Enzyme
• 22. Which statement about enzymes below is correct?(A) An enzyme has specificity toward its substrat
• 23. An enzyme will have higher affinity for which one of the following?(A) The substrate (B)The reac
• 24. How does an enzyme lower the reaction activation energy?(A) By lowering the entropy(B) By bindin
• 25. Regarding to inhibition mechanisms, which statement below is correct?(A) If the inhibitor binds
• 26. With an enzyme following Michaelis behavior, what initial velocity would you expect, when the su
• 27. If an enzyme has a Vmax of 10 unit and its Km is 8 mM, how fast can the enzyme catalyze the reac
• 28. Which type of inhibitor will a minimal impact on the enzyme’s Km ?(A) Competitive (B) Un-competi