14. Leptin can activate which of the following proteins in the signaling pathway?
(A) Src
(B) SOS
(C) STAT
(D) SMAD
(E) SREBP

1.The SMC proteins (for structural maintenance of chromosomes) include cohesins and condensins, and are known to have all of the following properties except: (A) a complete ATP binding site. (B) a hinge region. (C) topoisomerase activity to produce positive supercoils. (D) the ability to condense DNA. (E) two coiled-coil domains.

2.B-form DNA in vivo is a ______handed helix, ______ Å in diameter, with a rise of ______ Å per base pair.((A) left； 20； 3.9((B) right； 18； 3.4((C) right； 18； 3.6((D) right； 20； 3.4((E) right； 23； 2.6

3.Lactose operon is regulated by following factors except (A) glucose concentration (B) lactose concentration (C) lac I repressor (D) cGMP (E) catabolite gene activator protein

4.Which polymerase is critical for the biosynthesis of ribosomal RNA in eukaryotes? (A) Pol I (B) Pol II (C) Pol III (D) reverse transcriptase (E) telomerase

5. Which small nuclear RNA (snRNA) binds to the intron at a position encompassing the A residue? (A) U1 (B) U2 (C) U4 (D) U5 (E) U6

6. Which transcriptional factor recognizes TATA box in eukaryotes? (A) TFIILA (B) TFIIB (C) TFIID (D) TFIIE (E) TFIIH

7. Sickle cell anemia is a molecular disease of hemoglobin. The altered properties of hemoglobin S result from a single amino acid mutation. The following statement which is right? (A) a Leu instead of a Asp residue (B) a Val instead of a Glu residue (C) a Ile instead of a Asn residue (D) a Leu instead of a Gln residue (E) a Met instead of a Asn residue

8. What is the name given to the type of chemical bond that forms between the slightly electropositive hydrogen atom in a polar group and an electronegative atom? (A) Covalent bond (B) Electrostatic bond (C) Hydrogen bond (D) Van der Walls bond (E) Disulfide bond

9. The peptide bond: (A) Results from condensation of any R-group or side chain of different amino acids with each other (B) Results from the condensation reaction between the α-carboxyl group of one amino acid with the α-amino group of a second amino acid (C) Results from the condensation reaction between the α-carboxyl group of one amino acid with the α-carboxyl group of a second amino acid (D) Results from the condensation reaction between the α-carboxyl group of one amino acid and ammonia (E) Results from the condensation reaction between the α-carboxyl group of one amino acid and ammonium ion

10. For the study of a protein in detail, an effort is usually made to first: (A) conjugate the protein to a known molecule. (B) determine its amino acid composition. (C) determine its amino acid sequence. (D) determine its molecular weight. (E) purify the protein.

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