21. The amino and carboxyl groups of amino acids react in a head-to-tail fashion, eliminating water, and forming a covalent________linkage typically referred to as a________bond.
(A) ester, aromatic
(B) anhydride, phosphoanhydride
(C) amide, peptide
(D) dehydration, hydrogen
(E) none of the above

1. Which one of the following is the mechanism that Viagra inhibits PhosphoDiEsterase 5 (PDE5)? (A) (B) (C) (D)  (E)

2. Enzyme is a ( ) (pick the best description) (A) substrate analog (B) substrate stabilizer (C) transition state analog (D) transition state stabilizer (E) product stabilizer

3. For this enzyme reaction, it is a ? (A) Ping-Pong Reaction (B) Single-displacement reaction (C) Aspartic protease mediated reaction (D) reaction without water involvement (E) trypsin reaction.

4. Which statement below is inaccurate? (A) II is thermodynamics property and I is kinetics relevant (B) Both raising temperature and adding enzyme could lower the kinetic barrier (C) I is thermodynamics property and II is kinetics relevant (D) As long as II is large enough, the reaction can be completed at reasonable time frames (E) The probability for crossing barrier I is proportional to e-∆G‡/kT.

5. Which of the following is incorrect to describe myoglobin (Mb) and hemoglobin (Hb)? (A) The R-form and T-form of the Hb differ at their salt bridges, H-bonds and covalent linkages between subunits (B) Oxygen binding curve of Hb becomes closer to that of Mb in the absence of CO2 and BPG. (C) Oxygen binds to a ferrous ion of the heme in both proteins. (D) At low pH values, the population of R-form is less than the T-from of Hb. (E) Hb can carry CO2 but at different site from the one that binds CO and O2.

6. Many adults show symptoms like diarrhea, abdominal bloating and general discomfort which can be relieved by eliminating milk from the diet. This is most likely due to lack of ( ) (A) amylase (B) lactase (C) galactosidase (D) maltase (E) sucrose

7. The enzyme complex responsible for the photooxidation of water in photosystem II contains ( ) (A) Fe (B) Cu (C) Mg (D) Mn (E) Zn

8. The enzyme that catalyzes the interconversion of aldoses and ketoses is a ( ) (A) isomerase (B) epimerase (C) aldolase (D) mutase (E) kinase

9. The coenzymes of the pyruvate dehydrogenase complex do **not** include ( ) (A) thiamine pyrophosphate (B) NADH (C) coenzyme A (D) lipoic acid (E) iron-sulfur cluster

10. F1F0ATP synthase works as a molecular motor. Which subunit of this complex functions as the central shaft? (A) α(B) β (C) γ (D) δ (Ε) ε

115年 - [無官方正解]115 國立臺灣大學_ 碩士班招生考試試題：生物化學(C)#137643

115年 - [無官方正解]115 國立臺灣大學_ 碩士班招生考試試題：生物化學(A)#137641

115年 - [無官方正解]115 國立臺灣大學_ 碩士班招生考試試題：生物化學(一般生物化學)#137622

115年 - 115 國立臺灣大學_ 碩士班招生考試試題：生物化學(B)#137619

114年 - [無官方正解]114 國立清華大學_碩士班考試入學試題_生命科學暨醫學院甲組(生物與醫學科學組)﹕生物化學#132802

114年 - [無官方正解]114學年度學士後獸醫學系招生試題-生物化學#131167

114年 - [無官方正解]114 台灣綜合大學系統_學士班轉學生聯合招生考試：生物化學#129347

114年 - [無官方正解]114 國立臺灣大學_轉學生招生考試試題：生物化學概論#128196

114年 - 114 台灣聯合大學系統_碩士班招生考試試題_化學類：生物化學#126447

114年 - 114 國立成功大學_碩士班招生考試試題：生物化學#126226