1.非选择题- (共1题)

(1)建立这一生态系统的目的是使生产者固定的能量持续高效的流向____________;其能量利用率高的原因是其在营养结构具有______________的特点。
(2)蚕粪、蔗叶进入鱼塘经过____________的作用,释放出___________,被植物利用。
(3)该生态系统把桑基鱼塘与蔗基鱼塘有机地组合在一起,优化了系统结构,由此可见,该生态系统遵循________原理。
(4)一般来说,生态工程的主要任务是对___________的修复,对造成环境污染和破坏的生产方式进行改善,并提高生态系统的生产力。
(5)生态工程建设的目的就是遵循自然界____的规律,充分发挥资源的生产潜力,防止环境污染,达到_____和____的同步发展。与传统的工程相比,生态工程是一类________的工程体系。
2.单选题- (共17题)
①细胞都有相似的基本结构,如细胞膜、细胞质、遗传物质DNA
②真核细胞细胞核内有染色体,原核细胞无染色体,但有拟核,其中都含有DNA
③真核细胞多种多样,原核细胞多种多样,而真核细胞和原核细胞又不一样
A.① | B.② | C.①② | D.①②③ |
A.氨基酸 | B.核苷酸 | C.葡萄糖 | D.水 |
A.540个 | B.8100个 | C.17280个 | D.0个 |
A.动物细胞培养和植物组织培养所用培养基不同 |
B.动物细胞培养和植物组织培养过程中都要用到胰蛋白酶 |
C.烟草叶片离体培养能产生新个体,小鼠杂交瘤细胞可离体培养增殖 |
D.动物细胞培养可用于检测有毒物质,茎尖培养可用于植物脱除病毒 |
A.把健康的外源基因导入病人体内,使该基因的表达产物发挥作用,达到治疗疾病的目的 |
B.对有缺陷的细胞进行修复,从而使其恢复正常,达到治疗疾病的目的 |
C.运用人工诱变的方法,使有基因缺陷的细胞发生基因突变回复正常 |
D.运用基因工程技术,把有缺陷的基因切除,达到治疗疾病的目的 |
A.能够在宿主细胞中稳定的保存下来并大量复制,以便提供大量的目的的基因 |
B.具有多个限制酶切点,以便于目的基因的表达 |
C.具有某些标记基因,以便目的基因能够与让结合 |
D.它的参与能够使目的基因在宿主细胞中复制并稳定保存 |
A.我国禁止生殖性克隆和治疗性克隆 |
B.对于转基因技术,我们应该趋利避害,理性看待 |
C.我国不发展、不生产、不储存生物武器,并反对其扩散 |
D.对于基因检测应该保护个人遗传信息隐私权 |
A.动物细胞培养技术的原理是细胞的全能性 |
B.传代培养时需要用胰蛋白酶处理贴壁生长的细胞 |
C.癌细胞在培养瓶中不会出现接触抑制现象 |
D.动物细胞培养一般需要使用CO2培养箱 |

A.该技术所依据的遗传学原理是无性生殖 |
B.图中的①②③分别表示核移植、体细胞融合、早期胚胎培养 |
C.三亲婴儿的染色体分别来自三个亲本 |
D.该技术可以避免遗传学母亲的线粒体遗传病 |
A.蛋白质工程是在基因工程基础上延伸出来的二代基因工程 |
B.实施蛋白质工程的基本途径必须从预期蛋白质功能出发 |
C.蛋白质工程实施过程中可对关键氨基酸直接置换或增删 |
D.构建基因表达载体也是蛋白质工程的核心步骤 |
A.利用花药离体培养得到单倍体植株 |
B.利用秋水仙素处理萌发的种子或幼苗,得到多倍体植株 |
C.利用基因工程培育抗棉铃虫的棉花植株 |
D.利用细胞工程培育“番茄-马铃薯”杂种植株 |

A.用残渣来培育食用菌和蛆蛹,实现了物质的多级利用 |
B.用玉米的副产品玉米芯生产木糖醇,可增加经济效益 |
C.用蛆蛹排泄物作有机肥还田,运用了能量循环再生原理 |
D.在离开人的管理条件下,该生态工程不能正常运转 |
3.选择题- (共2题)
Leon was a postman. Every day after Leon woke up, he would feed his 37 cats. Leon didn't really want 37 cats, but one by one they had turned up on his doorstep, and Leon had taken them in.
Every day, after feeding the cats, Leon would collect the mail from the red postboxes in the village and take it home to sort(分类). “If only I had 37 helpers instead of 37 cats, my job would be so much easier,” Leon thought. Just then, the cats started meowing for their dinner. That gave Leon an idea. That night, Leon stayed up making 37 cat-sized postal backpacks. Each backpack fitted neatly onto a cat's back. Then, he went around to each postbox, putting signs up that read: Postbox closed. Please use the Postal Cat Service.
The next day, Leon put a backpack on each cat and dropped off the cats around the village. Leon knew that the cats would be happy lazing around all day. He also knew that they would always come home for dinner. Leon spent the day relaxing, waiting for his helpers to return. Leon was right. The cats did return, but they did not bring home many letters. Somehow, the cats had managed to wriggle(蜿蜒而行) out of their backpacks. Or lose their letters. Or get the letters wet. “Cats are just too unreliable(不可靠的)” Leon thought. Just then, there was a scratching(刮擦声) at Leon's door. A dog was waiting to be invited inside. That gave Leon an idea.
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【1】题量占比
非选择题:(1道)
单选题:(17道)
选择题:(2道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:2
7星难题:0
8星难题:1
9星难题:15