下列物质均为十八碳,若在体内彻底氧化,哪一种生成ATP最多() A.3个葡萄糖分子

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问题:

下列物质均为十八碳,若在体内彻底氧化,哪一种生成ATP最多()

A.3个葡萄糖分子

B.1个硬脂酸分子

C.6个丙酮酸分子

D.6个甘油分子

E.9个乙酰CoA分子

考点:风湿病(医学高级)分子生物学分子生物学题库
题型:单项选择题

下列有关酶的叙述,正确的是[ ]

A.pH过低,酶活性降低但不会破坏酶的分子结构

B.酶是活细胞产生并具有催化作用的蛋白质

C.细胞质基质中有催化葡萄糖分解的酶

D.细胞质中没有作用于DNA的解旋酶

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Our little boy came up to his mother in the kitchen one evening while she was fixing supper, and handed her a piece of paper that he had been writing on. After his morn dried her hands on an apron, she read it, and this is what it said:
For cutting the grass $ 5.00
For cleaning up my room this week $ 1.00
For going to the store for you $ 0.50
Baby-sitting my kid brother while you went shopping $ 0.25
Taking out the garbage $ 1.00
For getting a good report card $ 5.00
For cleaning up and raking the yard $ 2.00
Total owed : $ 14.75
Well, I’ll tell you, his mother looked at him standing there expectantly, and boy, could I see the memories flashing through her mind. So she picked up the pen, turned over the paper he’d written on, and this is what she wrote:
For the nine months I carried you while you were growing inside me, no charge.
For all the nights that I’ve sat up with you, doctored and prayed for you, no charge.
For all the trying times, and all the tears that you’ve caused through the years, there’s no charge.
For all the nights that were filled with dread, and for the worries I knew were ahead, no charge.
For the toys, food, clothes, and even wiping your nose, there’s no charge, son.
When you ______, the cost of my love is no charge.
Well, friends, when our son finished reading what his mother had written, there were great big old tears in his eyes, and he looked straight up at his mother and said: "Mom, I sure do love you. "
And then he took the pen and in great big letters he wrote: "PAID IN FULL. "

Please fill in the blank in the passage with proper words or phrases to complete the sentence. (within 5 words)

题型:单项选择题

2006年,社会主义新农村建设在中国大地上拉开了序幕。五一期间,某班同学到附近乡村开展社会调查。在调查中同学们感受到农村许多可喜的变化:农民致富的路宽了;钱袋子鼓起来了;新房子多了;实现了村村通公路……但同学们也发现了一些令他们焦急的问题:巫婆、神汉利用封建迷信活动骗钱害人的行为时有发生;  ①一些人痴迷“六合彩”赌博负债累累,  ②等等。

该乡村发生的变化是我国广大农村的缩影。请阅读材料,回答下列问题:

(1)农村建设中“可喜变化”和“焦急问题”的共同存在,说明了什么?

___________________________________________________________________________________________

(2)结合教材谈谈我国农村发生可喜变化的原因。(写出三条)

___________________________________________________________________________________________

(3)任选调查中发现的一个问题(只写序号),结合所学知识提出合理建议。(至少2条)

___________________________________________________________________________________________

题型:单项选择题

以下关于早期妊娠描述错误的是()。

A.最早见到的是胎囊

B.双蜕膜征是指包蜕膜与底蜕膜的分离

C.假妊娠囊不会有双环

D.卵黄囊的正常值2―5.6mm

E.胚胎器官发育在妊娠8周完成

题型:单项选择题

避雷器需要具备哪些运行特性?

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