38. Triple-helical DNA structures can result from Hoogsteen (non Watson-Crick) interactions. These interactions are primarily:
(A) hydrogen bonds involving the bases.
(B) covalent bonds involving deoxyribose.
(C) covalent bonds involving the bases.
(D) hydrogen bonds involving deoxyribose.

(E) hydrophobic interactions involving the bases.

1. Please choose the answer from the following descriptions:1. Glc(1αβ1) Fru is sucrose.2. Some sugars occur naturally in their L form.3. Dextran is homopolysaccharide.4. Hyaluronate and heparin are sulfated heteropolysaccharides.5. Starch is the most abundant polysaccharide in nature.(A) 1, 3, and 4 are incorrect.(B) 2 and 3 are correct.(C) 3 and 5 are incorrect.(D) 2,4, and 5 are incorrect.(E) 2, 3, and 4 are correct.

2. Please choose the answer from the following descriptions:1. a-Keratin is a protein which provides strength in connective tissue.2. Disulfide linkages are important for keratin structure.3. Gly residues are particularly abundant in collagen.4. L-isoleucine is an diastereomer of D-leucine.5. a-Keratin is a protein in which the polypeptides are mainly in the a-helix conformation.(A) 1 and 4 are incorrect.(B) 1 and 5 are incorrect.(C) 1, 2, and 3 are correct.(D) 3 and 4 are correct.(E) Only 2 and 5 are correct

3. Which of the following amino acids has more than one chiral carbon?(A) Val.(B) Leu.(C) Ile.(D) His.(E) Ser.

4. Which of the following part of antibody molecule is involved in binding to an antigen?(A) Fab.(B) Constant domain.(C) Fc.(D) Heavy chain.(E) Light chain.

5. The reaction GTP GDP + P; is an example of a(n)_____ reaction.(A) homolytic cleavage.(B) internal rearrangement.(C) free radical.(D) group transfer.(E) oxidation/reduction.

6. Oxidation-reduction reactions in biological system always involve:(A) direct participation of oxygen.(B) transfer of electron(s).(C) mitochondria.(D) formation of water.(E) transfer of hydrogens.

7. Consider the reaction A+B → C+D. Which of the following equation regarding the relationship between the free energy change (AG) at any condition and the free energy change (AGº) at standard state is true?(A) AG° = AG+RTin(A/C).(B) AG = AG+RTln(A/C).(C) AG° = AG+RTln(C/A).(D) AG = AG+RTln(C/A).(E) None.

8. Which statement about glycolysis is not true :(A) Conversion of glucose-6-phosphate to fructose-6-phosphate is an isomerization reaction.(B) In the conversion of glucose to pyruvate, only one step actually involve electron transfer.(C) Conversion of glyceraldehyde-3-phosphate to give 1,3-bisphosphoglycerate is an oxidative reaction.(D) Conversion of 2-phosphoglycerate to give phosphoenolpyruvate is an oxidative reaction(E) All of above are true

9. Which statement of citric acid (CA) cycle is true?1. In eukaryotes, CA cycle take places in mitochondrial matrix.2. CA cycle plays roles in both catabolism and anabolism.3. GTP is a direct source of energy produced in the CA cycle.4. All enzymes of the cycle are located in the matrix, except malate dehydrogenase.(A) 1, 2 and 3.(B) 2, 3 and 4.(C) 1, 3 and 4.(D) 1, 2, and 4.(E) All of above are true.

10. In movief of which one of the following statements is not correct?(A) EPA and DHA from oceanic fish could reduce the assault behaviors.(B) The head in sperm whales is largely made up of triacyglycerols and waxes.(C) Luminous jellyfish contain fluorescent dolicols.(D) In starvation, Pi might have plenty of ketone bodies.(E) Dehydration might result in defective secretion of dopamine or serotonin.

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