生物化學(xué)-考研-題庫-答案

1、目錄 目錄第一章 蛋白質(zhì)的結(jié)構(gòu)與功能·································

2、3;············2第二章 核酸的結(jié)構(gòu)與功能······················&

3、#183;·························16第三章 酶·········

4、3;····································&#

5、183;·······················25第四章 糖代謝···········

6、83;····································&

7、#183;···············36第五章 脂類代謝···················&

8、#183;····································

9、;·····49第六章 生物氧化······························

10、;·······························62第七章 氨基酸代謝···

11、3;····································&#

12、183;·················71 第八章 核苷酸代謝·················

13、·························用···········

14、83;·····166第十九章 水和電解質(zhì)代謝····························

15、3;·················171第二十章 酸堿平衡·················&

16、#183;····································

17、;175第一章 第一章 蛋白質(zhì)的結(jié)構(gòu)與功能 蛋白質(zhì)的結(jié)構(gòu)與功能一. 單項(xiàng)選擇題 單項(xiàng)選擇題1. 下列不含有手性碳原子的氨基酸是A. Gly B. Arg C. Met D. Phe E. Val2. 那一類氨基酸在脫去氨基后與三羧酸循環(huán)關(guān)系最密切 A. 堿性氨基酸 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. 一個(gè)酸性氨基酸，其 pHa1＝2.19，pHR＝4

18、.25，pHa2＝9.67，請問其等電點(diǎn)是A. 7.2 B. 5.37 C. 3.22 D. 6.5 E. 4.254. 下列蛋白質(zhì)組分中，那一種在 280nm 具有最大的光吸收A. 酪氨酸的酚環(huán) B. 苯丙氨酸的苯環(huán) C. 半胱氨酸的巰基 D. 二硫鍵 E. 色氨酸的吲哚環(huán)5. 測定小肽氨基酸序列的最好辦法是 A. 2,4-二硝基氟苯法 B. 二甲氨基萘磺酰氯

19、法 C. 氨肽酶法 D. 苯異硫氰酸酯法 E. 羧肽酶法6. 典型的α-螺旋含有幾個(gè)氨基酸殘基 A. 3 B. 2.6 C. 3.6 D. 4.0 E. 4.47. 每分子血紅蛋白所含鐵離子數(shù)為A. 5 B. 4 C. 3 D. 2 E. 18. 血紅蛋白的氧合曲線呈 A. U 形線 B. 雙曲線 C. S 形曲線 D. 直線