2019届辽宁省沈阳市第二中学高三上学期12月月考生物试题 扫描版

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辽宁省沈阳市实验中学北校最新高三12月月考生物试题

辽宁省沈阳市实验中学北校最新高三12月月考生物试题

一、单项选择题(共6小题,共36分)1.下列有关细胞的叙述,错误的是()..A.细胞是地球上最基本的生命系统B.脱氧核糖、葡萄糖、核糖既存在于植物细胞内,又存在于动物细胞内C. 发菜与水绵的细胞都可以通过叶绿体进行光合作用D.细胞体积越小,表面积越小,细胞的物质运输效率就越高的是( )2.以下关于酶和ATP的叙述,错误..A.在有氧、无氧条件下,人的成熟红细胞中ATP的产生速率大致相等B.验证酶的专一性时,自变量可以是底物的种类或酶的种类C.ATP中的能量可以来源于光能、化学能,也可以转化为光能和化学能D.高温、过酸、过碱都会导致蛋白酶的肽链断裂使其失活3. 下图表示干细胞的三个发育途径,有关说法正确的是 ( )A. A—B经过有丝分裂,B具有多向分化潜能B. A—C经过细胞分化,C的遗传物质发生改变C. A—D受到信号调节,D内溶酶体的功能减弱D. C-D不受基因调控,C的细胞结构不发生改变4.下列是某高等二倍体动物体内处于不同时期的细胞分裂图像,相关叙述错误的是()A.甲细胞不可能代表浆细胞或效应T细胞B.乙细胞中有两个染色体组,不含有同源染色体C.丙细胞的子细胞为卵细胞、极体或者精细胞D.丁细胞不可能发生A和a、B和b等位基因的分离5.某植物花瓣的大小受一对等位基因A、a控制,基因型AA的植株表现为大花瓣,Aa 的植株表现为小花瓣,aa的植株表现为无花瓣。

花瓣颜色受另一对等位基因R、r控制,基因型为RR和Rr的花瓣是红色,rr的为黄色。

两对基因独立遗传。

若基因型为AaRr 的亲本自交,则下列有关判断错误的是A. 子代共有9种基因型B.子代共有5种表现型C.子代的红花植株中,R的基因频率为1/3D.子代有花瓣植株中,AaRr所占的比例为1/36.下列实验均涉及装片制作和显微观察,其中实验步骤错误的是A.脂肪鉴定:切取花生子叶薄片→染色→去浮色→制片→观察B.观察DNA和RNA在细胞中的分布:水解→冲洗→染色→制片→观察C.观察质壁分离:撕取紫色洋葱鳞片叶表皮→制片→观察→滴加蔗糖溶液→观察D.观察叶绿体形态分布:取黑藻小叶→制片→观察二、非选择题(共54分)7.(10分)右图为某细胞的部分结构及蛋白质转运示意图,请回答下列问题:(1)研究蛋白质转运过程,一般采用的研究方法是.(2)若该细胞是高等植物的叶肉细胞,则图中未绘制的细胞器有。

2019-2020学年沈阳市第二中学高三生物月考试题及答案解析

2019-2020学年沈阳市第二中学高三生物月考试题及答案解析

2019-2020学年沈阳市第二中学高三生物月考试题及答案解析一、选择题:本题共15小题,每小题2分,共30分。

每小题只有一个选项符合题目要求。

1. 图甲表示由磷脂分子合成的人工膜的结构示意图,图乙表示人的红细胞膜的结构示意图及葡萄糖和乳酸的跨膜运输情况,图丙中A为1mol/L的葡萄糖溶液,B为1mol/L的乳酸溶液(呈分子状态),以下说法正确的是()A.如果用图甲所示人工膜作为图丙中的半透膜,则液面不再变化时,A侧液面高于B侧液面。

B.如果在图甲所示人工膜上贯穿上图乙的蛋白质①,再用作图丙的半透膜,则液面不再变化时,A侧液面低于B侧液面。

C.如果在图甲所示人工膜上贯穿上图乙的蛋白质①,再用作图丙的半透膜,则液面不再变化时,A侧液面低于B侧液面。

D.某些药物大分子不容易被细胞吸收,但如果用图甲所示人工膜包裹后再注射则更容易进入细胞,此实例可说明细胞膜具有选择透过性。

2. 取生理状态相同的某种植物新鲜叶片若干,去除主叶脉后剪成大小相同的小块,随机分成三等份,之后分别放入三种不同浓度的蔗糖溶液(甲、乙、丙)中,一定时间后测得甲的浓度变小,乙的浓度不变,丙的浓度变大。

已知实验过程中蔗糖分子不进出该植物细胞,下列说法正确的是A. 实验前,丙的浓度>乙的浓度>甲的浓度B. 乙的浓度不变是因为细胞内蔗糖浓度与乙的浓度相等C. 实验中,细胞与蔗糖溶液间水分子是单向移动的D. 甲、丙的浓度变化是由水分子在细胞与蔗糖溶液间的移动引起的3. 某研究小组进行“探究DNA的复制过程”的活动,结果如图所示。

其中培养大肠杆菌的唯一氮源是14NH4Cl或15NH4Cl。

a、b、c表示离心管编号,条带表示大肠杆菌DNA离心后在离心管中的分布位置。

下列叙述错误的是A.本活动运用了同位素示踪和密度梯度离心技术B.a管的结果表明该管中的大肠杆菌是在含14NH4Cl的培养液中培养的C.b管的结果表明该管中的大肠杆菌的DNA都是14N–15N-DNAD.实验结果说明DNA分子的复制是半保留复制的4. 科研工作者发现了苏云金芽孢杆菌中的毒蛋白基因B和豇豆中的胰蛋白酶抑制剂基因D,均可导致棉铃虫死亡。

沈阳市达标名校2019年高考二月大联考生物试卷含解析

沈阳市达标名校2019年高考二月大联考生物试卷含解析

沈阳市达标名校2019年高考二月大联考生物试卷一、单选题(本题包括35个小题,1-20题每小题1分,21-35题每小题2分,共50分.每小题只有一个选项符合题意)1.下图是叶肉细胞光合作用和细胞呼吸过程中CO2和[H]的变化,相关叙述正确的是A.过程⑦发生在线粒体中B.过程④发生在线粒体的内膜C.过程⑤、⑥均需要ATP提供能量D.过程①、③产生的[H]的作用相同2.下列有关高中生物实验的叙述,正确的是()A.观察DNA和RNA在细胞中的分布时,应选择染色均匀、色泽较浅的区域进行观察B.低温诱导洋葱根尖细胞染色体加倍的实验中能观察到同源染色体联会现象C.利用口腔上皮细胞观察线粒体的实验中细胞的完整性遭到破坏D.探究培养液中酵母菌数量动态变化的实验中无需要使用显微镜3.如图表示在有环境阻力的条件下种群数量与增长速率的关系。

下列叙述错误的是()A.在种群数量达到K/2之前控制有害动物最有效B.渔业上既要获得最大捕捞量又要使资源更新不被破坏,应使捕捞后的种群数量维持在K/2C.种群数量超过K/2时,死亡率大于出生率D.建立自然保护区可以提高K值,从而达到保护濒危动植物的目的4.下列关于群落和生态系统的叙述中,正确的是()A.顶极群落的群落结构最复杂也最稳定,能永远保持原状B.顶极群落中,净初级生产量与异养生物的呼吸量之差约为0C.食物链就是生态系统的生物之间存在着的单方向的捕食关系D.利用农作物秸秆沤肥后施给农作物,实现了生态系统中能量的循环利用5.利用不同的处理使神经纤维上膜电位产生不同的变化,处理方式及作用机理如下:①利用药物Ⅰ阻断Na+通道;②利用药物Ⅱ阻断K+通道;③利用药物Ⅲ打开Cl-通道,导致Cl-内流;④将神经纤维置于稍低浓度的Na+溶液中。

上述处理方式与下列可能出现的结果对应正确的是A.甲——①,乙——②,丙——③,丁——④B.甲——④,乙——①,丙——②,丁——③C.甲——③,乙——①,丙——④,丁——②D.甲——④,乙——②,丙——-③,丁——①6.某二倍体植物的一个花粉母细胞减数分裂过程中几个特定时期的显微照片如下。

辽宁省沈阳市第二中学2023-2024学年高一下学期6月月考英语试题(含答案)

辽宁省沈阳市第二中学2023-2024学年高一下学期6月月考英语试题(含答案)

沈阳二中2023-2024学年度下学期6月阶段测试高一(26届) 英语试题说明:1.测试时间: 120分钟总分: 150分2.客观题涂在答题纸上,主观题答在答题纸得相应位置上第一部分听力(共两节,满分30分) 略第二部分阅读(共两节,满分50分)第一节(共15小题; 每小题2.5分, 满分37.5分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。

AThe Best Mini Freezers in 2024There are hundreds of mini freezers on the market right now, so we've made the decision easier with a list of the best mini freezers, including various sizes and options in every price range.Hotpoint Manual Defrost FreezerFor anyone who truly doesn't know where to start, you can't go wrong with the Hotpoint's chest freezer. It offers 4.9 cubic feet of space. A removable organization basket is ideal for storing items you use the most to ensure they're always on top and easily accessible. Plus, you can adjust the temperature as needed to ensure everything is completely frozen through.Arctic King Upright FreezerIf you're looking for a unit that's relatively affordable, then this 1.1-cubic-foot upright mini freezer might be for you. It's a quality mini freezer for dorms, bedrooms or anyone wanting extra storage for snacks and beverages. You might not be able to fit a lot inside, but it takes up minimal space and is ideal for a single person.Midea Mini FreezerWith 3. 5 cubic feet of space, this model from Midea is the best mini freezer on Amazon with thousands of five-star ratings. Unlike many chest freezers, it has a door that opens at various angles, making it easy to grab items quickly. It comes with a storage basket and temperature knob that gives you full control over how cold you keep your food.Summit Mini FreezerThis mini freezer from Summit is available in stainless steel or wood-panel finishes. The freezer has 4. 7 cubic feet of space and an ice maker. Plus, it has a temperature memory function and a frost-free system that automaticallyadjusts the temperature to prevent excess frost from building up.1. Which freezer offers the largest space?A. Hotpoint Manual Defrost Freezer.B. Arctic King Upright Freezer.C. Mide a Mini Freezer.D. Summit Mini Freezer.2. What is s special about Mide a Mini Freezer?A. It enables you to adjust temperature.B. It is the best mini freezer in the world.C. Its door remains open at different angles.D. Its price is accepted by most customers.3. What can you do with Summit Mini Freezer?A. Remove the basket.B. Make ice.C. Fit a lot inside.D. Save money.BKristin Schell is the founder of The Turquoise Table, a movement of ordinary people who want to create community right in their own front yards. Ten years ago, she and her family moved to a new home in Austin, Texas.One day, Kristin tried to connect with her new neighbors by hosting a party. She bought a few picnic tables but the delivery driver set one table down in her front yard by mistake. “After the party, I painted the table turquoise—my favorite color—and put it in the front yard, just a few feet from the sidewalk,”she says.That turquoise table became the place where Kristin and her kids hung out. They played games, did crafts and ate snacks. “We got intentional about where we spent our time,”Kristin says. “We became‘front yard people’”Neighbors began to stop by to introduce themselves and sit down for a chat. Kristin invited people to join her at the table for coffee or iced tea. Then neighbors asked Kristin if their family could put a picnic table in their front yard too. A movement was born. “It was a simple way to slow down and connect with others,” she says. The turquoise table was inviting and had a shared feel.People often hesitate to invite others into their homes. They think their house is too messy, it's not big enough or they don't have enough time. “Our perfectionism can cause us to miss out on the joy of connecting with others,”Kristin says. Her picnic table takes away the excuses—and the pressure.She likes how it enables her to take a small step toward easing loneliness and building relationships in her community. “People’s greatest need is to know that they are loved and that they belong,” she says.A decade after their Texas beginnings, thousands of Turquoise Tables exist in all50 states and in 13 countriesaround the world. Not all of them are actually turquoise.“No matter what color it is, it's a friendship table,” Kristin says.4. Why did Kristin Schell start the movement?A. To host more parties in her front yard.B. To entertain her friends and neighbors.C. To engage with people in the neighbourhood.D. To create harmonıous communities worldwide.5. Which of the following words best describe Kristin Schell according to the text?A. Creative and sociable.B. Friendly and humorous.C. Generous and ambitious.D. Cautious and responsible.6. What can be inferred from the text?A. People don't like others to step into their houses.B. The campaign has a big impact at home and abroad.C. Kristin Schell bought the turquoise table to host a party.D. People feel unwilling to join in the front yard chat at first.7. Which of the following is a suitable title for the text?A. Love Your NeighborsB. An Amazing WomanC. Happy Front Yard TimeD. Tables Where All Are WelcomeCSnow crab legs, the centerpiece of any self-respecting seafood, are no longer on the menu. They are the victim of a massive population crash that led Alaska to cancel its Bering Sea snow crab harvest for the first time in recorded history this year. The$132 million-a-year industry saw the state's snow crab population drop 87%, from 8billion in 2018 to 1 billion last year. Officials suggested that climate change might be to blame; Alaska is the fastest-warming state in the U. S. But that's only part of the story, says Wes Jones, an Alaska-based fisheries expert. According too the marine biologists he works with,, the most immediate cause of snow crab death is something even seasoned fishermen didn't see coming: a mass cannibalism(同类相食) frenzy.Back in 2017, Jones says, local crabbers started reporting a population explosion of juvenile snow crabs. The boom continued into 2019, creating what Jones says was the largest population on record. At the time, the young crabs were too small for a legal harvest- juvenile snow crabs take four to five years to be fully mature. Meanwhile, Bering Sea temperatures , which is usually close to freezing, jumped several degrees from 2017 to 2019 and caused thespecies to speed up their metabolisms(新陈代谢).“All of a sudden you had this huge number of little crabs coming up, eating themselves out of house and home.”says Jones. “Then the water warmed, which meant they had to eat more.”It was a double whammy , and the results were unenviable for a hungry species that has run out of its usual food source. They basically cannibalized each other.”he says.Snow crabs are o nly the latest victims of climate change in the Bering Sea. Risıng temperatures have often led to unpredictable boom-and-bus t cycles, which have had unanticipated consequences up and down the food chain. A population explosion of sockeye salmon is one likely reason for the recent collapse of Alaska's red king crab harvest, which was also canceled this year. Meanwhile, the warming waters of the Bering Sea have opened the door for Pacific cod, a predator of juvenile crabs.It will be years before the Alaskan snow crab population recovers to harvest-worthy levels, says Jones. And that's only if temperatures in the Bering Sea stay cool enough for the cold-loving juveniles—and climate change is making everything harder to predict. “When you start seeing things outside of the range of what you’ve seen before,” says Jones, “you don't know how that is gonna affect something until it's happened, like rising water temperatures and cannibalism.”8. Why did Alaska cancel its Bering Sea snow crabs harvest this year?A. Customers are no longer crazy about snow crab.B. Snow crabs consume another species as food.C. They population of snow crab dropped sharply.D. Alaska suffers from severe climate change.9. What does the underlined phrase “double whammy” mean in paragraph 2?A. a shortage of food source and cannibalism.B. climate change in the Bering Sea illegal sea harvestC. the advanced metabolism and freezing sea temperature.D. a population explosion of snow crabs and a rise of the sea temperature.10. What can we learn from Wes Jones` words in the last paragraph?A. Bering Sea is certain to stay cool enough for the snow crab.B. Alaskan snow crab population will recover instantly.C. The current situation is hard to predict until it`s happenedD. It is effortless to research how fast the climate changes11. What`s the best title of the text?A. Alaskan fishing industry suffers heavy losses.B. Climate change leads to victims in the Bering Sea.C. Alaska delayed a snow crab harvest..D. The curious case of the cannibal crabs.DWho cares if people think wrongly that the internet has had more important influences than the washing machine? Why does it matter that people are more impressed by the most recent changes?It would not matter if these misjudgments were just a matter of people's opinions. However, they have real impacts, as they result in misguided use of scarce resources.The fascination with the ICT(Information and Communication Technology)revolution, represented by the internet, has made some rich countries wrongly conclude that making things is so “yesterday”that they should try to live on ideas.This belief in “post-industrial society”has led those countries to neglect their manufacturing sector(制造业), with negative consequences for their economies.Even more worryingly, the fascination with the internet by people in rich countries has moved the international community to worry about the “digital divide”between the rich countries and the poor countries. This has led companies and individuals to donate money to developing countries to buy computer equipment and internet facilities. The question, however, is whether this is what the developing countries need the most. Perhaps giving money for those less fashionable things such as digging wells, extending electricity networks and making more affordable washing machines would have improved people's lives more than giving every child a laptop computer or setting up internet centres in rural villages, I am not saying that those things are necessarily more important, but many donators have rushed into fancy programmes without carefully assessing the relative long-term costs and benefits of alternative uses of their money.In another example, a fascination with the new has led people to believe that the recent changes in the technologies of communications and transportation are so revolutionary that now we live in a “borderless world”. As a result, in the last twenty years or so, many people have come to believe that whatever change is happening today is the result of great technological progress, going against which will be like trying to turn the clock back. Believing in such a world, many governments have put an end to some of the very necessary regulations on cross-border flows of capital, labour and goods, with poor results.Understanding technological trends is very important for correctly designing economic policies, both at thenational and the international levels, and for making the right career choices at the individual level. However, our fascination with the latest, and our under valuation of what has already become common, can, and has, led us in all sorts of wrong directions.12. Misjudgments on the influences of new technology can lead to .A. a lack of confidence in technologyB. a slow progress in technologyC. a conflict of public opinionsD. a waste of limited resources13. The example in Paragraph 4suggests that donators should .A. take people's essential needs into accountB. make their programmes affordable to peopleC. ensure that individuals gets financial supportD. provide more alternative Internet facilities14. What has led many governments to remove necessary regulations?A. Neglecting the impacts of technological advances.B. Believing that the world has become borderless.C. Ignoring the power of economic development.D. Focusing on the role of international communication.15. What can we learn from the passage?A. People should be encouraged to make more donations.B. Traditional technology still has a place nowadays.C. Making right career choices is vital to personal success.D. Economic policies should follow technological trends.第二节(共5题; 每小题2.5分, 满分12.5分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项,选项中有两项为多余选项。

高三10月月考优质试卷分项解析:辽宁省东北育才学校2019届高三上学期第二次模拟考试生物试题解析(解析版)

高三10月月考优质试卷分项解析:辽宁省东北育才学校2019届高三上学期第二次模拟考试生物试题解析(解析版)

一.单项选择题(1-30题,每题1分,31-40,每题2分,共50分)1.下列相关组成生物体元素和化合物的叙述,准确的是()A.组成生物体的化学元素中,碳元素的含量最多B.纤维素和多肽都含有C、H、O、N四种元素C.活细胞的化合物中,蛋白质的含量最高D.RNA由核糖核苷酸连接而成,也能够贮存遗传信息【答案】D【考点定位】本题考查组成细胞的元素和化合物相关知识,意在考察考生对知识点的识记和理解掌握水准。

【名师点睛】理清脉络,弄清组成细胞的分子的相关知识2.甲状腺细胞能够将氨基酸和碘合成甲状腺球蛋白,并且将甲状腺球蛋白分泌到细胞外,其过程如图所示。

下列叙述错误的是()A.若含18O的氨基酸在b过程中产生了H218O,则18O标记的是氨基酸中的羧基B.细胞内的碘浓度远远高于血浆中的碘浓度,这表明a是主动运输过程C.甲状腺球蛋白分泌到细胞外的方式称为胞吐D.将3H标记的氨基酸注射到该细胞中,则出现3H的部位依时间顺序为①③⑤②⑥④【答案】D【考点定位】本题考查蛋白质的结构和细胞器的分工合作,意在考察考生对知识点的识记和理解掌握水准。

【名师点睛】分泌蛋白的合成与运输3.下列关于生物体内无机盐的相关叙述错误的是( )A.细胞中的无机盐主要以离子形式存有B.人体血液中Ca2+浓度太低会出现抽搐症状C.Mg是叶绿体中参与光合作用的各种色素的组成元素D.在探究小麦生长发育需要Mg2+的实验中必需设置对照实验【答案】C【解析】试题分析:细胞中的绝大部分无机盐以离子形式存有,A项准确;Mg仅仅叶绿体中参与光合作用的叶绿素的组成元素,B项错误;探究小麦生长发育需要Mg2+的实验中必需设置缺Mg实验实行对照,D项准确; 无机盐离子对于维持细胞和生物体的生命活动有重要作用,例如人体血液中Ca2+浓度太低会出现抽搐症状,C项准确.【考点定位】本题考查细胞中的无机盐的相关知识,意在考察考生对知识点的识记和理解掌握水准。

4.下列相关水的叙述中,错误的是()①参与运输营养物质和代谢废物的水为自由水②生物体内的化学反应离不开水③水是细胞结构的组成成分之一④人体细胞内水的存有形式为结合水和自由水⑤自由水与结合水的比例和新陈代谢的强弱关系不大⑥不同细胞内自由水与结合水的比例相差不大A.①④⑤ B.①④⑤⑥ C.⑤⑥ D.②③④⑤⑥【答案】C【考点定位】本题考查水的种类和功能,意在考察考生对知识点的识记和理解掌握水准。

辽宁省沈阳市二中高三生物12月月考试题(含解析)新人教

辽宁省沈阳市二中高三生物12月月考试题(含解析)新人教

沈阳二中2014—2015学年度上学期12月小班化学习成果阶段验收高三(15届)生物试题说明:1.测试时间:90分钟总分:100分2.客观题涂在答题纸上,主观题答在答题纸的相应位置上第Ⅰ卷(50分)一、选择题(每小题只有一个选项是符合题意的)。

【题文】1、下列有关细胞的组成成分、结构及其功能的叙述,正确的是()A.维生素D和胆固醇属于脂质,可以被苏丹Ⅳ染液染成红色B.细胞凋亡过程中有新蛋白质合成,体现了基因的选择性表达C.自然界生物体内所有细胞中核糖体的形成都与核仁密切相关D.洋葱的根尖细胞中无叶绿体,所以用根尖细胞不能培养出含叶绿体的植物体【答案】【知识点】A4 细胞与化学组成综合【答案解析】B解析:维生素D和胆固醇属于脂质,不能被苏丹Ⅳ染液染成红色;原核细胞没有核仁,因而其核糖体的合成与核仁无关;洋葱的根尖细胞中有控制叶绿体形成的基因,因而可以培养出含有叶绿体的植物体。

【思路点拨】注意原核细胞的结构特点。

【题文】2.细胞死活的判定方法有很多种,下列相关表述错误的是()①将植物细胞置于质量浓度为0.3g/ml的蔗糖溶液中,发生质壁分离的是活细胞②在高倍镜下观察,若发现细胞质流动,则表明细胞是活的③将某种细菌与水绵一起制成临时装片,用极细的光束照射水绵,若发现细菌没有趋向水绵照光部位,则说明细菌细胞是死细胞④洋葱根尖经解离后,若发现细胞被龙胆紫染上色,则表明细胞在解离前已经死亡A.①B.②④C.③④D.①③④【答案】【知识点】实验综合【答案解析】C【题文】3.右图甲表示细胞中ATP反应链,图中a、b代表酶,A、B代表化合物;图乙表示酶活性与温度的关系。

下列叙述不正确的是A.图甲中的B含有一个高能磷酸键,若B进一步水解可产生腺嘌呤核糖核苷酸B.细胞吸收K+时,a催化的反应加速,b催化的反应被抑制C.图乙中,若某温度X大于m小于n,则X温度下该酶的催化效率有可能与n相同D.图乙中温度为m时比n时酶活性低,比较而言m比n更有利于酶的保存【答案】【知识点】C1 酶、ATP及代谢类型【答案解析】B解析:细胞吸收K+的方式是主动运输,需要ATP分解供能,因而a催化的反应加速,但不会抑制ATP的合成。

2019届辽宁省高三上12月月考生物试卷【含答案及解析】

2019届辽宁省高三上12月月考生物试卷【含答案及解析】姓名___________ 班级____________ 分数__________一、选择题1. 给实验鼠静脉注射不同剂量的胰岛素,测得血糖的补充速率和消耗速率如下图所示。

下列相关分析正确的是(________ )A .随着曲线a的下降,非糖物质向葡萄糖转化的速率加快B .曲线b的上升是胰岛素作用于肝脏、肌肉等细胞的结果C .当胰岛素浓度为40μU/mL时,在较长时间内血糖浓度会维持相对稳定D .高浓度胰岛素条件下,下丘脑中控制胰岛A细胞分泌的神经中枢处于抑制状态2. 某岛屿由海底火山喷发形成,现已成为旅游胜地,岛上植被茂盛,风景优美。

下列叙述错误的是(________ )A .该岛屿不同地段物种组成上的差异是群落水平结构的体现B .该岛屿形成后最初进行的群落演替属于次生演替C .旅游可能使岛上的群落演替按照不同于自然演替的速度进行D .该岛屿一定发生过漫长的群落演替过程3. 以下甲、乙两图都表示某植物的非绿色器官CO 2 释放量和O 2 吸收量的变化。

下列相关叙述错误的是(________ )A .甲图中氧浓度为a时的情况对应的是乙图中的A点B .甲图中氧浓度为b时的情况对应的是乙图中的CD段C .甲图的a、b、c、d四个浓度中c是最适合贮藏的D .甲图中氧浓度为d时没有酒精产生4. 如图表示某种动物雄性个体细胞分裂过程中DNA含量的变化,下列说法错误的是(________ )A .图1的CD段表示着丝点的分裂B .若图1表示减数分裂,则图1中BC段一个细胞内一定含有2条Y染色体C .图2只表示有丝分裂过程中DNA的数量变化D .图2的DE段表示末期产生子细胞5. 某种昆虫长翅( A )对残翅( a )为显性,直翅( B )对弯翅( b )为显性,有刺刚毛( D )对无刺刚毛( d )为显性,控制这3对性状的基因均位于常染色体上。

如图表示某一昆虫个体的基因组成,以下判断正确的是(________ )A .控制长翅和残翅、直翅和弯翅的基因遗传时遵循自由组合定律B .该个体的一个初级精母细胞所产生的精细胞基因型有四种(无交叉互换)C .该个体的细胞有丝分裂后期,移向细胞同一极的基因为AbD和abdD .该个体与另一个体测交,后代基因型比例为1:1:1:16. 金鱼的一对相对性状由一对等位基因( A、a )控制,其中a基因在纯合时使胚胎致死( aa、X a X a 、X a Y等均为纯合子),现取一对金鱼杂交,F 1 金鱼共63只,其中雄金鱼21只,则F 1 金鱼自由交配所得F 2 成活个体中,a基因的频率为(________ )A . 1/8____________________B . 1/6____________________C . 1/11______________________D . 1/147. 一个T 2 噬菌体的所有成分均被 3 H标记,其DNA由6000个碱基对组成,其中鸟嘌呤占全部碱基的1/6,用该噬菌体侵染未被标记的大肠杆菌,共释放出151个子代噬菌体。

地理丨炎德英才大联考江西省萍乡市萍乡中学2025届高三12月月考卷(五)地理试卷及答案

·大联考萍乡实验学校2025届高三月考试卷(五)地理命题人:向敬审题人:高三地理备课组注意事项:1.答卷前,考生务必将自己的姓名、考生号、考场号、座位号填写在答题卡上。

2.回答选择题,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,再选涂其他答案标号。

回答非选择题,将答案写在答题卡上。

试卷上无效。

3.考试结束后,将本试卷和答题卡一并交回。

一、选择题(本大题共16小题,每小题3分,共48分。

在每小题给出的四个选项中,只有一项是符合题目要求的)岷江上游干流干旱河谷区海拔763米-5844米,植被覆盖类型多样,除河谷地带的农作物,流域两侧谷坡多分布有草地、森林和灌木等。

植被覆盖度指植被在地面的垂直投影面积占统计区总面积的百分比,反映了植被的茂密程度和植物进行光合作用面积的大小。

下图示意岷江上游干流干旱河谷区位置及水系分布。

据此完成1-2题。

1.岷江干旱河谷区气候干旱的主要原因是()A.植被稀疏B.深居内陆C.焚风效应D.地形崎岖2.岷江干旱河谷区的植被覆盖度()A.与坡度大小呈正相关B.与海拔高低呈正相关C.距河越近覆盖度越高D.山南坡整体高于山北坡羽枝青藓是秦岭北麓岩石表层的优势藓种,匍匐生长,具束状假根。

羽枝青藓主茎生长时,其侧边分枝同步发育,且表现得较为密集,大多不与岩石表面接触,而与之形成一定夹角,可有效利用太阳辐射并减少周围空气流动。

冠层下羽枝青藓的生长速率是冠层间的3倍以上。

完成3-5题。

3.羽枝青藓茎、枝同步发育的好处是()①获取适宜的光照条件②降低植株水分蒸发率③避免从岩石表面脱落④更多的吸收岩石养分A.①②B.②③C.③④D.①④4.与冠层间相比,冠层下羽枝青藓的生长速率高,主要影响因素为()A.温度B.光照C.降水D.风力5.随着羽枝青藓的发育生长,该地岩石()A.矿质元素流失严重B.结构稳定性被破坏C.表层的干燥度增加D.物理风化速度减缓博格达山脉位于中国新疆中部,属北天山东段,东西走向,平均海拔4000米以上,为准噶尔盆地和吐鲁番盆地的界山。

2019-2020学年沈阳市实验学校高三生物月考试题及参考答案

2019-2020学年沈阳市实验学校高三生物月考试题及参考答案一、选择题:本题共15小题,每小题2分,共30分。

每小题只有一个选项符合题目要求。

1. 如图是细胞中某两种物质的含量在有丝分裂过程中的变化情况。

下列叙述不正确的是()A.图中的虚线所代表的物质有两种不同的表现形式B.图中的b~c段会发生着丝粒分裂C.叶肉细胞中会出现如图所示变化,而细菌细胞中不会出现D.a~b段细胞中有蛋白质和RNA的合成2. 某校生物兴趣小组进行了生物组织中还原糖检测的实验(如图),下列叙述正确的是()A. 在实验材料选择方面,用苹果比用植物叶片的效果要好B. 在制备生物组织样液时,加入石英砂的主要目的是促进还原糖的溶解C. 用于该实验检测的斐林试剂也可用于检测蛋白质,只是添加试剂的顺序不同D. 由于斐林试剂不稳定,在使用斐林试剂时要先加0.1 g/mL的NaOH溶液,后加入0.05g/mL的CuSO4溶液3. 某种植物无叶绿素不能进行光合作用,但可吸附于其他绿色植物以取得养分。

该种植物在生态系统的成分中属于A.生产者B.消费者C.分解者D.捕食者4. 当外界温度高于动物体温时,下列不利于动物散热的是A. 马出汗B. 猴子在水里玩耍C. 犬伸出舌加速喘息D. 牛排尿量减少5. 如图为小肠上皮细胞亚显微结构示意图。

下列有关膜蛋白的叙述,正确的是()A.膜蛋白A和膜蛋白D的作用完全相同,均能转运葡萄糖B.膜蛋白B是构成胞间连丝的成分,可进行细胞间的信息交流C.膜蛋白C能够识别并结合信号分子进行细胞间的信息交流D.膜蛋白属于分泌蛋白,其合成过程篅核糖体、内质网、高尔基体和线粒体6. 有关DNA、RNA的说法,正确的是()A. 均由C、H、O、N、P五种元素组成B.DNA是大分子物质,RNA是小分子物质C.DNA和RNA彻底水解的产物中有3种产物是相同的D. 基本组成单位都是核糖核苷酸,但所含的碱基有所不同7. 下列关于群落的叙述,正确的是()A.根据群落的外貌和物种组成等方面的差异,可将陆地的群落大致分为荒漠、草原、森林等类型B.森林群落在垂直方向没有明显分层现象C.演替达到相对稳定的阶段后,群落内物种组成不再变化D.习性相似物种的生活区域重叠得越多,对资源的利用越充分8. 下列有关细胞增殖、分化、衰老、凋亡和癌变的叙述,错误的是()A. 植物细胞有丝分裂过程中,细胞核内的DNA经复制后平均分配到两个子细胞中B. 细胞凋亡,相关基因活动加强,有利于个体的生长发育和稳态的维持C. 癌变是在致癌因子的作用下,细胞的正常基因突变成原癌基因和抑癌基因的过程D. 细胞分化、衰老和癌变都会导致细胞形态、结构和功能发生变化9. 下图为某家庭的遗传系谱图(不考虑交叉互换),已知白化病在自然人群中的患病率为1/10000,且II-8不携带白化病致病基因。

2019-2020学年沈阳市134中学高三生物二模试卷及答案

2019-2020学年沈阳市134中学高三生物二模试卷及答案一、选择题:本题共15小题,每小题2分,共30分。

每小题只有一个选项符合题目要求。

1.下列生物中,不具有细胞结构的是()A.酵母菌B. SARS病毒C.蓝藻D.大肠杆菌2.玉米非糯性基因(A)对糯性基因(a)是显性,A-、a-表示该基因所在染色体发生部分缺失(缺失区段不包括A和a基因),缺失不影响减数分裂过程。

为验证染色体缺失的花粉不育,而染色体缺失的雌配子可育,现有AA、Aa、aa、AA-、A-a、aa-共6种玉米植株,下列实验方案最合适的是()A.aa(♂)×A-a(♀)、aa(♀)×A-a(♂)B.aa-(♂)×Aa(♀)、aa-(♀)×Aa(♂)C.aa(♂)×AA-(♀)、aa(♀)×AA-(♂)D.A-a(♂)×A-a(♀)3.下列关于植物生长素的叙述,正确的是()A. 生长素是由植物体内特定器官产生的微量有机物B. 生长素对植物体的生命活动的调节与基因组的表达有关C.2,4-D是与生长素具有相似生理效应的植物激素D. 同一植物的不同器官对生长素敏感的程度为根>茎>芽4.下列有关细胞膜的叙述,错误的是()A.细胞膜上蛋白质的种类和数目越多,功能越复杂B.细胞膜的组成成分包括脂质、蛋白质和糖类C.细胞膜具有物质运输、能量转换、信息传递的功能D.细胞膜两侧的离子浓度差是通过被动运输实现的5.ATP的结构简式正确的是()A.A~P~P~PB.A~P~P—PC.A—P~P~PD.A—P—P~P6.下列关于人体各级神经中枢及人脑高级功能描述,错误的是()A. 饮酒过量的人语无伦次,其大脑皮层言语区的S区受损B. 短期记忆主要与神经元活动及神经元之间的联系有关C. 成年人可以有意识地憋尿,能体现神经系统的分级调节D. 考试专心答题时,需要大脑皮层言语区的V区、W区参与7.水熊虫是一种被称为不会灭绝的多细胞真核生物。

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