生化习题集-修改版.

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1、目录第一章蛋白质的结构与功能··············································2第二章核酸的结构与功能················································16第三章酶······································································25第四章糖代谢································································35第五章脂类代谢

2、·····························································48第六章生物氧化·····························································61第七章氨基酸代谢··························································70第八章181核苷酸代谢··························································79第九章物质

3、代谢的联系与调节··········································85第十章DNA生物合成----复制·······································92第十一章RNA的生物合成----转录··································102第十二章蛋白质的生物合成----翻译·····························109第十三章基因表达调控·················································118第

4、十四章基因重组与基因工程········································127第十五章细胞信息转导·················································135第十六章肝的生物化学·················································150第十七章维生素与微量元素···········································161181第十八章常用分子生物学技术的原理及其应用·················

5、165第十九章水和电解质代谢··············································170第二十章酸碱平衡······················································174第一章蛋白质的结构与功能一.单项选择题1.下列不含有手性碳原子的氨基酸是A.GlyB.ArgC.MetD.PheE.Val2.那一类氨基酸在脱去氨基后与三羧酸循环关系最密切A.碱性氨基酸B.含硫氨基酸C.分支氨基酸D.酸性氨基酸E.芳香族氨基酸3.一个酸性氨基酸，其pHa1＝2.19，pHR＝4.

6、25，pHa2＝9.67，请问其等电点是A.7.2B.5.37C.3.22D.6.5E.4.254.下列蛋白质组分中，那一种在280nm具有最大的光吸收A.酪氨酸的酚环B.苯丙氨酸的苯环C.半胱氨酸的巯基D.二硫键E.色氨酸的吲哚环5.测定小肽氨基酸序列的最好办法是A.2,4-二硝基氟苯法B.二甲氨基萘磺酰氯法C.氨肽酶法D.苯异硫氰酸酯法E.羧肽酶法6.典型的α-螺旋含有几个氨基酸残基A.3B.2.6C.3.6D.4.0E.4.47.每分子血红蛋白所含铁离子数为A.5B.4C.3D.2E.18.血红蛋白的氧合曲线呈181A.U形线B.双曲线C.S

7、形曲线D.直线E.Z形线9.蛋白质一级结构与功能关系的特点是A.氨基酸组成不同的蛋白质，功能一定不同B.一级结构相近的蛋白质，其功能类似可能性越大C.一级结构中任何氨基酸的改变，其生物活性即消失D.不同生物来源的同种蛋白质，其一级结构相同E.以上都不对10.在中性条件下，HbS与HbA相比，HbS的静电荷是A.减少＋2B.增加＋2C.增加＋1D.减少＋1E.不变11.一个蛋白质的相对分子量为11000，完全是α-螺旋构成的，其分子的长度是多少nmA.11B.110C.30D.15E.110012.下面不是空间构象病的是A.人文状体脊髓变性病B.老年

8、痴呆症C.亨丁顿舞蹈病D.疯牛病E.禽流感13.谷胱甘肽发挥功能时，是在什么样的结构层次上进行的A.一级结构B.二级结构C