4. Draw the chemical structure of the following compounds (2 points for each): (A) urea (B) dATP
(C) aspartate

1. The hnRNAs need to be processed to become mature mRNAs. Please write down the processes for hnRNAs. (9 points)

2. The replisome is a complex molecular machine that carries out DNA replication. Please write down three enzymes are included in the replisome. (9 points)

3. You are given 500 ml of a solution at pH 7.5 containing an unknown concentration of nicotinamide adenine dinucleotide (NADH, the molar extinction coefficient of NADH is 6600 M-¹cm-1 at 340 nm and pH 7.5). You place 0.5 ml of this solution in a 0.5 cm wide, 0.5 cm long, 2 cm high quartz cuvette and determine the absorbance at 340 nm (A340nın) of this solution to be 0.33. What is the molarity of the NADH solution? How many moles of NADH are in the 500 ml of solution? (6 points)

4.What are ketone bodies and why do they form during starvation? 

3. What process must dietary triacylglycerols go through to be absorbed by intestines and utilized? 

(4) Compound X is an inhibitor of mitochondrial ATP synthesis. It was observed that when compound X was added to cells, the NAD*/NADH ratio decreased. Would you expect X to be an uncoupling agent or an inhibitor of the respiratory chain? Please explain. 

(3) After the first reaction releasing CO2, the following oxidation in the mitochondria generates the bulk of the ATP. Please concisely describe the process how the oxidation energy is captured and converted into ATP. 

(2) Under aerobic conditions, all six carbons of glucose are oxidized to CO2. What is the first reaction that releases CO2? (Please include the name of the enzyme.) 

(1) Does this mean that anaerobic glycolysis in muscle is a wasteful use of glucose? Please explain. 

(7) The enzyme has three substrates, including substrate A, B & C. The K, of substrate A, B and C to the enzyme is 8 nM, 50 nM and 4 mM, respectively. Among these three substrates, which one has the best reaction with the enzyme? Why? 

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 - 114 國立高雄大學_研究所碩士班招生考試試題_生命科學：生物化學#137690

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