admins 发表于 2021-8-20 22:56:10

江苏省普通高中2019-2020学年高二学业水平合格性考试模拟(一)生物试卷

※题型:单选题※知识点:单选题※试题难度:较易<br>鱼类在水中遨游、鸟类在空中飞翔,虽形态各异、习性不同,但体内的基本组成相似。它们细胞中含量最多的化合物都是(&nbsp;&nbsp;)<br>A.水&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.糖类&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.脂肪&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.蛋白质<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2014/6407d37c0c834c9aa19b36fee236886b/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2014/d6070532d2e1438dbbf1d15b62537d9b/5D91935C7BAEA3887DCD60EB5C427CDE.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>在血红蛋白的结构中,连接两个氨基酸分子的化学键叫做(&nbsp;&nbsp;)<br>A.磷酸键&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.二酯键&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.肽键&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.离子键<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/6cce4efd71764e118409fb57c2ac2ae8/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/40f5c12818734107ba1782316fccaada/3D66BA77B86806636C8A280520075202.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>组成细胞膜的主要成分是(&nbsp;&nbsp;)<br>A.脂质(磷脂)和多糖&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.蛋白质和多糖<br>C.脂质(磷脂)和蛋白质&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.核酸和蛋白质<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2012/2a2d7cae826543708949f903831e2841/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2012/d6b5fb40ee5044fc8cab47be0f161409/FC8C3DFFD872BA0260F18FAE5E420798.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>在电子显微镜下观察某生物细胞,发现有叶绿体、高尔基体、线粒体等细胞器,由此可判断该细胞可能取自(&nbsp;&nbsp;)<br>A.果蝇&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.水稻&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.家兔&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.大肠杆菌<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/1209abe510d04259b9a29462e5c5f4ed/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/4e936b43c00942448b72be41d8b4280b/36AB4C6D1B01A46016703E772E9F48B2.png"><br><br>※题型:单选题※知识点:单选题※试题难度:容易<br>蓝藻是原核生物,与真核细胞相比,蓝藻细胞没有(&nbsp;&nbsp;)<br>A.细胞膜&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.细胞器&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.细胞质&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.核膜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2018/94046ad49e864782a3445657d024630b/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2018/1c099e7b64ac4b1c92aaab106361200f/CFE5CF956B3FFCC007588506F87579A6.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>某生物兴趣小组的同学利用无土栽培技术培养樱桃番茄。培养一段时间后,发现植株出现萎蔫现象,经分析是由于培养液的浓度过高,导致植物(&nbsp;&nbsp;)<br>A.根部受到细菌感染<br>B.根细胞呼吸停止<br>C.根细胞吸水困难,甚至失水<br>D.根细胞膜上的载体受到破坏<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/3b121e947ac145e5af1baa7e80564462/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/19942211e04f4e5682f1f73f3a646f3b/A670F1DFB10FD40F4AF03818564BC4B5.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>将哺乳动物的新鲜红细胞放入下列溶液中,会使红细胞涨破的溶液是(&nbsp;&nbsp;)<br>A.0.9%生理盐水&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.5%盐水<br>C.10%盐水&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.自来水<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2015/ffa28d027c984b08a15177be21dc184c/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2015/65a798a05206445ca91ff8eef5b0b959/3689237C9CB72D6AC3650CAD31E72090.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>生物体细胞有氧呼吸的最终产物是(&nbsp;)<br>A.丙酮酸和&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.乳酸<br>C.二氧化碳和水&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.酒精和二氧化碳<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/49130eaf9d994ff58f56f0dc3debbf81/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/82c172732c3147619720fe112042f4a2/0738BD95C6D4E0120A8A6AD07D732261.png"><br><br>※题型:单选题※知识点:单选题※试题难度:容易<br>在植物细胞工程中常需要去掉细胞壁,在不损伤植物细胞内部结构的情况下,下列可用于去除细胞壁的物质是(&nbsp;&nbsp;&nbsp;)&nbsp;A.纤维素酶&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.蛋白酶&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.盐酸&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.脂肪酶<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2013/2058b9dba5c649b19564d524e457678b/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2013/81abda0bc65b4846b92756fae4f27cdd/9B5533F871BD4F2F090F20B87FB23664.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>生物体的生命活动都需要能量,直接给细胞的生命活动提供能量的物质是(&nbsp;)<br>A.糖类&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.蛋白质&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.ATP&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.核酸<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/28d5f3b2055f4200b5737596eaeabb1f/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/fd2c78ff9e564fb489e1dbf93595075b/8FC3DFC319C60CA42E4AB74D6F851120.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>某同学剧烈运动后感到肌肉酸痛,主要原因是肌细胞产生并大量积累了(&nbsp;&nbsp;)<br>A.醋酸&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.酒精&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.碳酸&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.乳酸<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2014/077136572ce84ee6a7e3f22b26d3d331/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2014/ef055db60c854501897a50d6a1656f63/EDF056B67836AEE56D847B2F75F8AF1A.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>在一个细胞周期中,持续时间最长的阶段是(&nbsp;&nbsp;)<br>A.分裂期的前期&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.分裂期的中期<br>C.分裂期的后期&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.分裂间期<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2015/b004752a3b74408eaa2de2ebc20ae49b/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2015/d353f40b945e4c4bb87ab245302ff8f2/05DD2C7E3898A71A1E4AF0473D72ED9E.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>下列有关癌细胞的叙述,错误的是(&nbsp;&nbsp;)<br>A.癌细胞不能在体内转移<br>B.癌细胞能够无限增殖<br>C.癌细胞膜上的糖蛋白减少<br>D.癌细胞是由正常细胞转化而来的<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/b8074aec015449faa1ee2f5da7a4810c/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/cbdd4e67a87a44439d2fc74352a4a934/36C099FC5475FD1E73B13858D7FD3646.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>蝴蝶兰幼叶的叶肉细胞经离体组织培养能培育成蝴蝶兰幼苗,这说明植物细胞具有(&nbsp;&nbsp;)<br>A.专一性&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.全能性<br>C.恢复原状态的能力&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.进一步分化的能力<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/84b6739ead70407d88be0614d7e6481c/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/05b7839eae0444109a5b3f02d6796ea4/09925A1D9F67E59FFFE86C7533E3ACEC.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>在双链DNA分子结构中,两条链上的碱基通过氢键连接成碱基对,下列碱基配对正确的是(&nbsp;&nbsp;)<br>A.A-T&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.A-G&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.T–G&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.T-C<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2014/5259e222af4641ceaa298d76d664d248/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2014/9c3ab62f7c0f48f19dd1ca59fc1eaeff/F44FD18E24932B478D651D78E283E2F4.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>在遗传信息的传递过程中,以DNA的一条链为模板合成信使RNA的过程称为(&nbsp;)<br>A.逆转录&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.转录&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.复制&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.翻译<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/c4112a6609c14d88897666a32147132c/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/2d37d0150e4d4163b3de91f9d0060f4f/A7016310989FBD24DD8B309F04C92CB8.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>下图为某家族白化病的遗传系谱图,该病的致病基因位于常染色体上。在第Ⅲ代个体中,可能不带致病基因的是(&nbsp;&nbsp;)<img A.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.9&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.10&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.11<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/ff8ca28fa6c54ae0a31b3ecbcd3d1ef8/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/109bf95dcf754e29b4d2e230afe38ed8/96E48FEE7E4A8422E2EDC84C7294A093.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>一个DNA分子经连续3次复制后,可以得到的DNA分子数目是(&nbsp;)<br>A.2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.16<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/0949a9f7a04f45f692d4ccfb726bd4a9/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/8760a96890ea4977b920fcba2a746565/2651269E68445022604A3B1E253F9B9D.png"><br><br>※题型:单选题※知识点:单选题※试题难度:容易<br>诱变育种所依据的遗传学原理是(&nbsp;&nbsp;)<br>A.基因自由组合&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>B.基因突变<br>C.染色体变异&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>D.染色体交叉互换<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/c1fad0550bd0494eb6790a990c0b7499/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/5c624c652d814cc690345d778eb6873e/EAD97E95F2AB7B30FE462852EBE19EA3.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>下列人类常见遗传病中属于染色体变异的是(&nbsp;)<br>A.红绿色盲病&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.镰刀型细胞贫血症<br>C.21三体综合征&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.先天性聋哑<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/52e3451319fa4b0d9027aac39f44e3fa/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/ab38740b147242b7871225e24cd1a431/47EBF81C3C9E9E4DBD13AF18011F4CF0.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>马与驴属于两个不同的物种,在自然状态下一般不能自由交配,即使交配成功,产生的后代骡也是不可育的,这种现象在生物学上称为(&nbsp;&nbsp;)<br>A.地理隔离&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.生殖隔离&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.诱变育种&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.无性繁殖<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/95e13c44c8934bfca587661de87a0de7/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/b9c4a0343ff649e5a3fb4e27a52e2a67/A4DF2FA2B97586F3C15683C583EE3FCE.png"><br><br>※题型:单选题※知识点:单选题※试题难度:较易<br>下列关于现代生物进化理论的说法,错误的是(&nbsp;&nbsp;)<br>A.生物进化的基本单位是生态系统<br>B.突变和基因重组产生进化的原材料<br>C.进化的实质是种群内基因频率的改变<br>D.自然选择决定生物进化的方向<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/3ebb987784294b389d349f86c6957d9d/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/8f14c070892d4fcf818dece1b638a079/D2666CB11EA9F6C4BC5DBF85AE91DA28.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>在观察植物细胞有丝分裂的实验中,将洋葱根尖染色的试剂是(&nbsp;)<br>A.碘液&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.龙胆紫溶液&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.斐林试剂&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.苏丹Ⅲ染液<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2019/ce4b7a62ab2940e4a1d7f7d16c98714f/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2019/a2d421a3a52546ada8b09a287bd90dbf/72E1772E854ED1278A65C40757D186A1.png"><br><br>※题型:填空题※知识点:填空题※试题难度:中等<br>下图为光照条件下一个叶肉细胞中两种细胞器之间的气体交换示意图<br>据图回答<br>(<br>在<br>[<br>]<br>中填序号<br>在<br>________<br>上填名称<br>)<br>:<br><img<br>1.图中所示的细胞器A是,B是。2.图中物质a是,它是在部位产生的。3.实验室中进行光合作用实验的植物,如果突然停止给予光照,那么在短时间内,该植物进行光合作用的细胞器中,三碳化合物的含量变化是。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/aa58eadb963b46e78e34c7505abb5a1c/F8CB87E2324B87CCAD5623EF3460B799.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/c2de86ee92904b95a27ae4f5f2497c4a/3655A2FA509132E5C1A9473C599211EC.png"><br><br>※题型:实验题※知识点:实验题※试题难度:中等<br>某种自花传粉的豆科植物<br>同一植株能开很多花<br>不同品种植株所结种子的子叶有紫色也有白色。现用<br>该豆科植物的甲、乙、丙三个品种的植株进行如下实验。<br><tbody><br>亲本的处理方法<br>亲本的处理方法<br>所结种子的性状及数量<br>紫色子叶<br>白色子叶<br>实验<br>一<br>将甲植株进行自花传粉<br>409粒<br>实验二<br>将乙植株进行自花传粉<br>0<br>405<br>粒<br>实验三<br>将甲植株的花除去未成熟的全部雄蕊<br>然后套上纸袋<br>待雌蕊成熟时<br>接受乙植株的花粉<br>396粒<br>实验四<br>将丙植株进行自花传粉<br>297粒<br>101<br>粒<br></tbody><br>分析回答:<br>1.在该植物种子子叶的紫色和白色这一对相对性状中,显性性状是。如果用A代表显性基因,a代表隐性基因,则甲植株的基因型为,丙植株的基因型为。2.实验三所结的紫色子叶种子中,能稳定遗传的种子占。3.实验四所结的297粒紫色子叶种子中杂合子的理论值为粒。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/b49806e184ca4158a5240f879799c93a/180E8C8EECEB6D9BBAF49C8D3FAA28AE.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/32cd8f7b94224ba7bc765c2e0e8f528a/4A93EF69EB3C7E307D44FBE781A12A03.png"><br><br>※题型:填空题※知识点:填空题※试题难度:中等<br>下面表示蜘蛛的丝腺细胞合成蛛丝蛋白的部分过程示意图<br>据图回答:<br><img<br>1.在蛋白质合成过程中,该图表示的过程称为,图中①的结构名称是。2.决定②的密码子是,连接②与③的化学键称为。3.在丝腺细胞中,与蛛丝蛋白加工、分泌有关的细胞器是。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/b4d3b57cb8bd44e7885dfea7230800e0/1F3DBD25C8262433FD8DD756F30EEBA4.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/b24c9d11e1c64e099898605b6b550ed8/6F19C4E54019B2BAF623568490507A9C.png"><br><br>※题型:实验题※知识点:实验题※试题难度:中等<br>根据我国现行的食品质量标准<br>~<br>个月的婴儿奶粉中蛋白质的含量应为<br>12%<br>~<br>18%<br>。现有一种待测婴儿奶粉<br>请你尝试完成鉴定实验。<br>(1)<br>实验目的<br>鉴定该待测婴儿奶粉蛋白质的含量是否符合质量标准。<br>(2)<br>实验原理<br>蛋白质与<br>________<br>试剂发生作用<br>产生紫色反应。<br>(3)<br>材料用具<br>相同浓度的标准婴儿奶粉溶液和待测婴儿奶粉溶液、<br>0.1<br>g/mL<br>的<br>NaOH<br>溶<br>液、<br>0.01<br>g/mL<br>的<br>CuSO<br><sub></sub><br>溶液、试管和滴管等。<br>(4)<br>实验步骤<br>①<br>取两支试管分别加入<br>mL<br>的标准婴儿奶粉溶液<br>(<br>编号甲<br>)<br>和<br>mL<br>的待测婴儿奶粉溶液<br>(<br>编号乙<br>)<br>。标准婴儿奶粉溶液在本实验中起<br>________________<br>作用。<br>②<br>分别向两支试管中加入<br>mL<br>的<br>________<br>溶液<br>振荡<br>摇匀。<br>③<br>再分别向两支试管中加入<br>~<br>滴<br>________<br>溶液<br>振荡<br>摇匀<br>比较颜色的变化。<br>(5)<br>结果预期<br>________________________________________________________________________<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2015/fb8b6c0d5faf4185bf856da58cec5270/9E444F272D4A0069879FD65B097EB2AC.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2015/00ec97dee76d42e0ade17c7e39399063/3DC20E078537485A758233CEB0F24D3E.png"><br><br>
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