49. Which one of the following subunits is NOT contained in the basic DNA-dependent RNA polymerase of the bacterium Escherichia coll?
(A) αsubunit
(B) β subunit
(C)ω subunit
(D)σsubunit
(E) None of them

1.Which one of the following reactions is catalyzed by a "transferase"? (A)glucose-6-phosphatc > fructose-6-phosphate (B) glyceraldchyde 3-phosphate + NAD+→ bisphosphoglycerate + NADH (C) fructose-1,6-bisphosphate → dihydroxyacetone phosphate + glyceraldehyde 3-phosphate (D)fructose-6-phosphate + ATP → fructose-1,6-bisphosphate + ADP (E) dihydroxyacetone phosphate→ glyceraldehyde 3-phosphate

2. Which one of the following features regarding "competitive inhibitor" is NOT true? (A) does not change (B) increase in KM (C) binding to the ES complex (D)binding to the active site of an enzyme (E)decrease in / KM

3. The following method is NOT developed for the analysis of mRNA level: (A) Northern blot analysis (B) Sanger's method for cDNA sequencing (C) Reverse transcriptase-polymerase chain reaction (D)cDNA microarray (E)Next generation sequencing

4. The following characteristics is NOT belonged to the transcriptional regulation of enhancers in eukaryotes: (A) Work when located long distance from the promoter (B)Work when upstream or downstream from the promoter (C) Work when oriented in either direction (D)Work through heterologous promoters (E)Work by binding only one specific transcription factor

5.The following condition is NOT suitable for phage lamda to undergo lytic pathway: (A) Expression of lambda repressor (B) Expression of cro antiterminator (C) Expression of RecA protein (D)Lysogenic pathway is terminated under UV radiation (E) cro protein binds to the promoter OR3 site

6. The following statement is NOT true for the regulation of lactose operon: (A) 1,6-allolactose is a true inducer (B) cI repressor functions as tetramer (C) cI repressor is a diffusible repressor (D)lactose operon is an inducible anabolic operon (E)Under low glucose condition, CAP when bound with cAMP can bind to the upstream lacZ promoter and increase transcription efficiency

7. In the sequence of cytochrome c, the presence of cysteine at position 17 in hundreds of different species indicates that this particular amino acid is: (A) Conserved (B) Mutated (C) Homologous (D)Variable (E) none of the above

8. Of the following proteins that aid in the folding process, which is exclusively involved in the interconversion of cis and trans bonds? (A) prolyl isomerase (B) protein disulfide isomerase (C) Hsp60 (D)Hsp70 (E) GroEL-ES complex

9. Based on the plot of oxygen saturation versus partial pressure of oxygen, which of the following statenents is true?  (A) at oxygen pressure > 100 mm Hg, hemogiobin dissociates into individual subunits so that it is able to bind oxygen similar to myoglobin (B) at typical resting capillary oxygen pressure of ~30 mm Hg, hemoglobin has only 1 of its 4 oxygen binding sites filled while myoglobin is nearly saturated with oxygen (C)under periods of extreme muscle exertion, capillary oxygen pressure can drop to 10 mm Hg, allowing release of ~90% of oxygen carried by hemoglobin (D) the structure of hemoglobin allows for complete release of oxygen in capillary beds at all times (E) none of the above

10. Why do individuals who are heterozygous for sickle cell anemia have a resistance to malaria? (A) formation of hemoglobin aggregates makes red blood cells impervious to parasitic infection (B) shortened life span of red blood cells does not allow sufficient time for the parasite to mature in the red blood cell (C)diminished blood flow to the skin as a result of sickled red blood cells blocking capillaries prevents mosquitoes from actually transferring the malaria parasite to individuals (D)X sickle cell hemoglobin fibers have both decreased O2 and CO2 carrying capacity; since CO2 is a mosquito attractant, diminished CO2 exhalation does not attract mosquitoes (E)r none of the above

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

114年 - 114 國立臺灣大學_ 碩士班招生考試試題：生物化學(C)#125975

114年 - 114 國立臺灣大學_ 碩士班招生考試試題：生物化學(A)#125974

114年 - 114 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)#125973

113年 - [無官方正解]113 國立中正大學_碩士班招生考試試題_生物醫學科學系：生物化學#136966