下列四种情况中,哪些尿能和班乃德(Benedict)试剂呈阳性反应?①血中过高浓度的半乳糖溢入尿中(半乳糖血症)②正常膳食的人由于饮过量的含戊醛糖的混合酒造成尿中出现戊糖(戊糖尿)③尿中有过量的果糖(果糖尿)④实验室的技术员错把蔗糖加到尿的样液中
A. = 1 \* GB3 ① = 2 \*GB3 ② = 3 \*GB3 ③
B. = 1 \* GB3 ① = 3 \*GB3 ③
C. = 2 \* GB3 ② = 4 \*GB3 ④
D. ④
E. =1 \* GB3 ① = 2 \* GB3 ② = 3 \* GB3 ③ = 4 \* GB3 ④
查看答案
α-淀粉酶水解支链淀粉的结果是①完全水解成葡萄糖和麦芽糖②主要产物为糊精③使α-1,6糖苷键水解④在淀粉-1,6-葡萄糖苷酶存在时,完全水解成葡萄糖和麦芽糖
A. = 1 \* GB3 ① = 2 \*GB3 ② = 3 \*GB3 ③
B. = 1 \* GB3 ① = 3 \*GB3 ③
C. = 2 \* GB3 ② = 4 \*GB3 ④
D. =1 \* GB3 ① = 2 \* GB3 ② = 3 \* GB3 ③ = 4 \* GB3 ④
下列单糖中哪些是酮糖?=1 \* GB3 ①核糖= 2 \* GB3 ②核酮糖= 3 \* GB3 ③葡萄糖= 4 \* GB3 ④果糖
A. = 1 \* GB3 ① = 2 \*GB3 ② = 3 \*GB3 ③
B. = 1 \* GB3 ① = 3 \*GB3 ③
C. = 2 \* GB3 ② = 4 \*GB3 ④
D. = 4 \* GB3 ④
E. = 1 \* GB3 ① = 2 \*GB3 ② = 3 \*GB3 ③ = 4 \*GB3 ④
下列的单糖分类中,哪些是正确的?①甘油醛——三碳糖② 赤癣糖——四碳糖=3 \* GB3 ③ 核糖——五碳糖=4 \* GB3 ④ 果糖——六碳糖
A. = 1 \* GB3 ① = 2 \*GB3 ② = 3 \*GB3 ③
B. = 1 \* GB3 ① = 3 \*GB3 ③
C. = 2 \* GB3 ② = 4 \*GB3 ④
D. = 4 \* GB3 ④
E. = 1 \* GB3 ① = 2 \* GB3② = 3 \*GB3 ③ = 4 \*GB3 ④
下列哪些糖没有变旋现象?=1 \* GB3 ①果糖= 2 \* GB3 ② 蔗糖 =3 \* GB3 ③ 甘露糖 =4 \* GB3 ④ 淀粉
A. = 1 \* GB3 ① = 2 \*GB3 ② = 3 \*GB3 ③
B. = 1 \* GB3 ① = 3 \*GB3 ③
C. = 2 \* GB3 ② = 4 \*GB3 ④
D. = 4 \* GB3 ④
E. = 1 \* GB3 ① = 2 \*GB3 ② = 3 \*GB3 ③ = 4 \*GB3 ④
微信支付 
支付宝支付