广西医科大学12级本硕 生物化学期考题-双语.docVIP

Guangxi Medical University final examination of Biochemistry〞 for grade 2012 seven years clinnical medicine major (paperA) (8pages enclosed) Date for examination: 2013/6/29 Time: 150 minutes class Name Number Please write down correctly Item Final Score Appraiser Ⅰ. Multiple choice questions. （50 points） Scan Score Examination Center Ⅱ. Short-essay questions （20 points） 1 2 3 4 Ⅲ. Open-ended question （20 points） 1 2 Ⅳ. Modified essay question （10 points） 1 Ⅴ. Additional question （10 points） 1 Total （Ⅱ～Ⅴ items） Score calculater 注意：请用铅笔按照答题卡上所列要求填涂答题卡，学号即考号（左、右对齐均可）。一定要填涂试卷类型！请一定填写试卷上的姓名、学号，以便备查！ Ⅰ. Multiple choice questions. (50×1 = 50 points ) Ⅰ.1. A type multiple choice questions：Choose the best answer for each of the followings, only one choice for each item (40×1 =40 points ) 1、The pI of one protein is 7.7, this protein will be negatively charged in which kind of solution ? A、pH4.0 B、pH5.0 C、pH6.0 D、pH7.0 E、pH8.0 2、Which of the followings belongs to branch chain amino acids ? A、Asp B、Ile C、Cys D、Phe E、His 3、Which kind of structure is describing the relationship of the subunits in proteins ? A、α-Helix B、β-sheet C、Tertiary structure D、Quaternary structure E、Prosthetic group(辅基) 4、The wrong narration about mRNA is that A、mRNA molecules containing the genetic code B、With the highest number of species C、Half-life is the shortest D、With poly A at the 3′-end in the most of eukaryotic mRNA E、The precursor of mRNA is hnRNA 5、Thepart of base sequence of a DNA chain is 5′-GGATCC-3′，the base sequence of its complementary strand is that A、5′-GGATCC-3′ B、5′-CCTAGG-3′ C、5′-GGAUCC-3′ D、5′-CCAUGG-3′ E、5′-GGAUCC-3′ 6、The DNA melting temperature（Tm） refers to A、The temperature when the A260 reaches the maximum value B、The temperature when the A260 reaches 50% of the maximum value C、The