【单选题】
糖酵解过程中催化1分子六碳糖裂解为2分子三碳糖反应的酶是：
A. 磷酸已糖异构酶
B. 磷酸果糖激酶
C. 醛缩酶
D. 磷酸丙糖异构酶
E. 烯醇化酶
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相关试题
【单选题】
糖酵解过程中最重要的关键酶是：
A. 己糖激酶
B. 磷酸果糖激酶I
C. 丙隔酸激酶
D. 磷酸果糖激酶II
E. 果糖二磷酸酶
【单选题】
糖有氧氧化的最终产物是：
A. CO2+H2O+ATP
B. 乳酸
C. 丙酮酸
D. 乙酰CoA
E. 柠檬酸
【单选题】
从糖原开始1分子葡萄糖经糖的有氧氧化可净生成ATP分子数为：
A. 12
B. 13
C. 32
D. 33
E. 34
【单选题】
糖原合成的关键酶是：
A. 磷酸葡萄糖变位酶
B. UDPG 焦磷酸化酶
C. 糖原合成酶
D. 磷酸化酶
E. 分支酶
【单选题】
肌糖原不能直接补充血糖的原因是：
A. 缺乏葡萄糖-6-磷酸酶
B. 缺乏磷酸化酶
C. 缺乏脱支酶
D. 缺乏己糖激酶
E. 缺乏6-磷酸葡萄糖脱氢酶
【单选题】
属于糖代谢各途径的共同中间代谢产物的是：
A. 6-磷酸葡萄糖
B. 6-磷酸果糖
C. 1，6一二磷酸果糖
D. 3-磷酸甘油醛
E. 2，6—二磷酸果糖
【单选题】
1分子葡萄糖无氧酵解时，净生成 ATP的分子数是
【单选题】
三大营养物质氧化分解的共同途径是：
A. 糖酵解
B. 有氧氧化
C. 磷酸戊糖途径
D. 乳酸循环
E. 三羧酸循环
【单选题】
1分子乙酰辅酶A 经氧化分解可生成 ATP 的数目是：
A. 6个
B. 8个
C. 10个
D. 12个
E. 20个
【单选题】
1分子葡萄糖在体内进行有氧氧化，彻底分解生成二氧化碳和水时净生成ATP的分子数是：
A. 10 或 12
B. 20 或 22
C. 30 或 32
D. D34 或 36
E. 36 或 38
【单选题】
三炭酸循环又称为
A. Cori 循环
B. Krebs 循环
C. 羧化支路
D. D 苹果酸穿梭
E. E柠檬酸一丙酮酸循环
【单选题】
生命过程中，最有效的能源物质是：
A. A 蛋白质
B. B 脂类
C. C 糖类
D. D 核酸
E. E 维生素
【单选题】
合成糖原时，葡萄糖的直接供体是：
A. A 1-磷酸葡萄糖
B. B 6-磷酸葡萄糖
C. C CDPG
D. D UDPG
E. E GDPG
【单选题】
能降低血糖浓度的激素是：
A. A 胰高血糖素
B. B 肾上腺素
C. C 甲状腺素
D. D 胰岛素
E. E肾上腺皮质激素
【单选题】
成熟红细胞主要以糖酵解供能的原因是：
A. A缺氧
B. B 缺少 TPP
C. C 缺少辅酶 A
D. D缺少线粒体
E. E 缺少微粒体
【单选题】
人体生理活动的主要直接供能物质是：
A. A ATP
B. B GTP
C. C 脂肪
D. D葡萄糖
E. E 磷酸肌酸
【单选题】
糖有氧氧化与酵解的分叉点是：
A. A 乳酸
B. B 丙酮酸
C. C 3-磷酸甘油醛
D. D 糖异生作用
E. E 草酰乙酸
【单选题】
饥饿24 小时后，血糖浓度的维持主要依靠：
A. A 糖原合成
B. B 糖原分解
C. C 磷酸茂糖途径
D. D 糖异生
E. E 有氧氧化
【单选题】
糖原合成中除ATP供能外，还需要：
A. A ADP
B. B GTP
C. C UTP
D. D CTP
E. E 磷酸肌酸
【单选题】
体内co2的生成是由
A. 代谢物脱氧产生
B. 碳酸分解产生
C. 碳原子由呼吸链传递给氧产生
D. 有机酸脱羧产生
E. 碳原子与氧原子直接化合产生
【单选题】
体内生物氧化最重要的场所是
A. 胞质
B. 微粒体
C. 高尔基体
D. 细胞膜
E. 线粒体
【单选题】
线粒体内必条重要的氧化呼吸链的交汇点在
A. 黄素酶
B. 辅酶Q
C. 铁硫蛋白
D. 细胞色素
E. 细胞色素酶
【单选题】
呼吸链存在于
A. 细胞膜
B. 线粒体内膜
C. 线粒体外膜
D. 微粒体
E. 过氧化物酶体
【单选题】
下列哪种物质不是氧化呼吸链的组成部分
A. FMN
B. FAD
C. 泛醌
D. CoA
E. 细胞色素
【单选题】
参与线粒体氧化呼吸链递氢，递电子的维生素是
A. 叶酸
B. 泛酸
C. 抗坏血酸
D. 维生素pp
E. 维生素B1
【单选题】
呼吸链中可被CO抑制的是
A. FAD
B. FMN
C. Fe-S
D. 细胞色素aa3
E. 细胞色素
【单选题】
ATP生成的产要方式是
A. 肌酸磷酸化
B. 糖的磷酸化
C. 氧化磷酸化
D. 底物水平磷酸化
E. 有机酸脱羧
【单选题】
下列哪种不是高能化合物
A. 琥珀酰辅酶A
B. ATP
C. 磷酸肌酸
D. 3-磷酸甘油醛
【单选题】
下列那种物质不能自由通过线粒体内膜
A. 天冬氨酸
B. NADH
C. 谷氨酸
D. a-磷酸甘油
E. 苹果酸
【单选题】
含有16%相对恒定量，且属于蛋白质特征性元素的是
【单选题】
蛋白质的氨基酸之间分子结构的不同在于其
A. Ca
B. Ca-H
C. Ca-COOH
D. Ca-R
E. Ca-NH2
【单选题】
在蛋白质分子结构中起决定作用的是：
A. 一级结构
B. 二级结构
C. 三级结构
D. 超二级结构
E. 四级结构
【单选题】
酸性氨基酸有几种：
A. 2
B. 3
C. 5
D. 10
E. 20
【单选题】
测得某生物样品的氣含量是5%，此样品约含策白质
A. 8.8%
B. 12.5%
C. 16.0%
D. 38.0%
E. 31.25%
【单选题】
碱性氨基酸有几种
A. 2
B. 3
C. 5
D. 10
E. 20
【单选题】
精氨酸与赖氨酸属于哪一类氨基酸：
A. 酸性
B. 碱性
C. 中性极性
D. 中性非极性
E. 芳香族
【单选题】
蛋白质变性不包括
A. 氢键断裂
B. 盐键断裂
C. 肽键断裂
D. 疏水键断裂
E. 二硫键断裂
推荐试题
【单选题】
Tom is a book lover. ______ likes reading very much.
A. He B. She C. You D. It
【单选题】
—May I listen to the music here, Mr. White?
—Sorry, you’d better it like that．
A. not to do B. not do to
C. dont do D. not do
【单选题】
3.—Did you have a good time at Lauras birthday party?
— Yes, indeed. Its several years ________ I enjoyed myself so much.
A. when B. before C. since D. that
【单选题】
4. —___________ is the Summer Palace from here?
About three kilometers away. You can take the No. 35 bus.
A. How long B. How far C. How often D. How much
【单选题】
5. I was looking for a birthday gift for my mother, but I couldnt find ______ suitable.
A. anything B. something C. nothing D. everything
【单选题】
6. A friend of my ____ and I are going to visit_______ next week．
A. father; Browns B. father's; Browns
C. father; the Browns D. father's; the Browns
【单选题】
7. She ______ very hard since she came to our school.
A. studies B. has studied C. is studying D. studied
【单选题】
8. — Who will send you to the new school, your mom or your dad?
— _______. Ill go there by myself.
A. Both B. Either C. Neither D. None
【单选题】
9.—Well do what we can ____English well this term．
—It’s high time for you to work hard．
A. study B．to study C. be studied D. be studying
【单选题】
10. —I’m going to Flower Bookstore. Could you tell me ______?
— Sorry, I don’t know. I’m new here.
A. where it is B. where was it C. where is it D. where it was
【单选题】
11. How do you like the dishes, Eric?
— Fantastic! Nothing tastes ________.
A. nice B. better C. terrible D. worse
【单选题】
12. ______ Lin Feng has to work late, she always wears a smile on her face.
A. Because B. If C. Until D. Though
【单选题】
13.You can save money _______ you buy cheaper things.
A. before B. unless C. if D. until
【单选题】
14. We will have a _________ holiday after the exam．
A. two-month B. two month’s C. two month D. two-months
【单选题】
15. —We will build an underground in Xuzhou before 2015．
— Wow, _______! Will it pass our place?
A. what an excited news B. how excited the news is
C. what exciting news D. how exciting
【单选题】
16. — Emily, here’s a dictionary．I hope it will help you in some way．
— Thank you．It’s ________ what I need．
A. almost B. still C. only D. just
【单选题】
17. —Oh．I’m hungry．Mum, can I have the hamburger on the plate?
—No．It tastes ．
A. terribly B. terrible C. good D. well
【单选题】
18. —We can invite our teachers to the farewell party next Saturday.
—Yes, ______? I’ll call them at once.
A. what for B. what C. why not D. why
【单选题】
19.You can ________ ask the old man to move away to any other place because he has lived ________ here for at least sixty years．
A. hardly; alone B. hard; alone
C. hardly; lonely D. hardly; lonely
【单选题】
20.—I’m going back to see my grandparents this weekend．
—________．
A. It’s very nice of you B. You’d better hurry
C. Say goodbye to them D. Give my best wishes to them
【单选题】
21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
—What _______ good advice it is!
A. an; a B. a; a C. an; \ D. \; a
【单选题】
22. —Do you know the boy________ is sitting next to Peter?
— Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; ninth C. /; ninth D. which; ninth
【单选题】
23. It was dark, ______ I couldnt see what was happening.
A. or B. though C. but D. so
【单选题】
24.—You can use MSN to talk with Vivien on the Internet.
—I know. But can you tell me ________?
A. what I can use it B. when I can use it
C. why can I use it D. how can I use it
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
A. What B. Where C. Which D. Why
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A．England． B．France． C．America． D．China．
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A．He cares more about a flower and a sheep．
B．He meets many more strange adults on other planets．
C．He realizes his love for the rose and he goes back to his planet．
D．He discovers interesting things such as a snake, other roses and a fox
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
A．the adult world B．the planet B -612
C．a rose and a fox D．the adventure of a young prince
【单选题】
( ) 29. What is the writer's main purpose（目的）in writing this passage？
A．To tell the readers his life story．
B．To tell people what kind of person his father was．
C．To tell the readers what present he got from his father．
D． To let people know how poor he was．
【单选题】
( ) 30. Why did the father not ask his son not to do this and do that？
A．Because he felt quite confident of his son．
B．Because he was born from a poor family．
C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
【单选题】
( ) 31. What would someone learn from this passage？
A．How to live by oneself． B．How to stand on one's own feet．
C．What a good father should do． D．What the self-important is like．
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage？
A．闲暇时光 B．学费 C．精神空虚 D．经济不足
【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
A. thought it was beautifully written
B. wanted to know what it really meant
C. decided to write it on a warehouse wall
D. wanted her husband to put it up in the classroom
【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
