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2026年6月浙江高考生物选考真题试卷、答案、解析和评分细则(附视频讲解)

  • 2026-09-29 05:33:36
2026年6月浙江高考生物选考真题试卷、答案、解析和评分细则(附视频讲解)
评分细则
目前我收到了浙江不同地区整理的评分细则,发现每一份都有几个填空说法有出入,以上仅供参考。
选择题解析:

1.B。肌球蛋白是蛋白质,主要由CHON四种元素组成,A错;蛋白质的基本单位是氨基酸,B对;强酸会破坏蛋白质空间结构从而影响蛋白质功能,C错;用双缩脲试剂检测蛋白质显紫色,D错。

2.A。内环境包括血浆、组织液和淋巴液等,泪液、尿液和汗液均在体外,不属于内环境。

3.C。长期过度放牧会减小生态承载力,A错;开发利用可再生能源会增大生态承载力,B错;培育高产作物可增大生态承载力,C对;推广立体种养技术会增大生态承载力,D错。

4.B。溶酶体内含水解酶,能水解甲状腺球蛋白。

5.A。在N1—N3期间,幼苗新增数始终大于植株死亡数,该种群的数量变化为逐年增加,A对。

6.C。该染色体片段2-5发生了倒位,基因q突变成了基因Q,该染色体发生了基因突变和染色体结构变异。

7.B。静置无法分离出线粒体和细胞质基质,需要用差速离心法分离细胞器,A错;设计组4的目的是排除缓冲液成分对实验结果的干扰,B对;若实验为无氧条件,酵母菌无氧呼吸发生在细胞质基质,组1和组3均可检测到乙醇,而线粒体无法利用葡萄糖,因此组2检测不到乙醇,C错;若实验为有氧条件,组1仅能发生的糖酵解反应产生少量ATP,组3则可以发生有氧呼吸,可产生大量ATP,因此组1测得的ATP量小于组3,D错。

8.B。该蛋白运输药物为逆浓度运输,消耗ATP,因此运输方式为主动运输,A对;该蛋白可以催化ATP水解反应,可降低ATP水解反应的活化能,B错;该蛋白运输药物时会发生构象改变,同时改变磷脂分子的排布,C对;抑制该蛋白的作用,会使转运抗癌药物想作用减弱,会降低药物的疗效,D错。

9.D。不同海拔高度分布的群落类型不同,是多个不同的群落,不能体现群落的垂直结构,D错。

10.D。甲细胞处于间期,发生核DNA分子的复制,洋葱为高等植物,无中心体,A错;乙细胞处于有丝分裂前期,同源染色体两两配对发生在减数第一次分裂前期,B错;丙细胞为分裂后期,每条染色体的DNA分子两条链中有一条为新链含3H,一条为旧链不含3H,C错;洋葱核型为2n=16,丁细胞处于有丝分裂中期,有2个染色体组,16条染色体,每个染色体有2个染色单体,即有32条染色单体,染色体组数:染色体数:染色单体数为1:8:16,D对。

(1)析出DNA降低DNA酶活性

第一小问:浙科版选修三P103

第二小问:速冻叶片能降低酶活性,而DNA酶会破坏DNA的完整性,因此填降低DNA酶活性。

(2)个体差异/遗传背景差异无菌水B

第一小问:

若仅对单株进行分析,可能这一株植物有与无籽基因序列相似的DNA片段,干扰分析;若对无籽组和有籽组的样本库分析,则可以消除单个个体遗传背景差异的干扰,更准确获得与无籽基因相关的DNA条带。

第二小问:

第二小问:

电泳图只能反映PCR扩增产物的情况,无法反映基因组DNA情况,A错;

图1中无籽组比有籽组多一个电泳条带,无籽葡萄的基因组DNA上可能多2个该引物的结合位点,例如有籽葡萄细胞中的多条DNA中有1条DNA上无该引物结合位点,而无籽组的这条DNA上多了2个该引物的结合位点,则无籽组可以多扩增出1个条带,B对;

若在该引物的5'端增加3个碱基,由于用到的是一种引物,扩增1个序列该种引物会结合在该序列的两侧,相当于两边各增加了3个碱基,则扩增出的DNA条带会增加6个碱基对,同时也可能导致引物结合位点发生改变,DNA条带碱基变化不确定,C错;

若在该引物的3'端增加3个碱基,若引物结合位点不变,扩增出的DNA条带长度不变,同时也可能导致引物结合位点发生改变,甚至可能导致无法扩增出条带,D错。

(3) A重组DNA

第一小问:涉及T-A克隆

2026年浙江高考生物错误率很高的一道题,涉及T-A克隆

2026-06-11

T-A克隆技术的核心原理基于Taq DNA聚合酶的特性,即在PCR反应过程中,Taq酶会在PCR产物的3’末端非模板依赖地添加一个腺嘌呤(A)。

利用这一特性,通过构建一种特殊的T载体,其3’端带有突出的胸腺嘧啶(T),可以实现PCR产物与T载体的直接连接。这种T/A配对方式使得PCR产物能够快速、高效地插入到质粒载体的多克隆位点(MCS)中。

第二小问:

(4)DNA Marker/DNA相对分子质量标准物;引物长度/识别靶序列的精确度更高/引物和靶序列的专一性更强

第一小问:浙科版选修三P109

第二小问:

随机引物长度为10个碱基,PCR重扩增的引物长度为24个碱基,引物越长,识别靶序列的精确度更高。

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浙江高一高二高三生物网课,比你想要的更    全面(主讲:潘石玉)

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练完这50+道基因工程典型例题,90%同学都进步了!(题目+解析+视频)

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  1. CONNECT:[ UseTime:0.000610s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000961s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000483s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000356s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000582s ]
  6. SELECT * FROM `set` [ RunTime:0.000290s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000710s ]
  8. SELECT * FROM `article` WHERE `id` = 517526 LIMIT 1 [ RunTime:0.000418s ]
  9. UPDATE `article` SET `lasttime` = 1790634201 WHERE `id` = 517526 [ RunTime:0.002167s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000385s ]
  11. SELECT * FROM `article` WHERE `id` < 517526 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000450s ]
  12. SELECT * FROM `article` WHERE `id` > 517526 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000452s ]
  13. SELECT * FROM `article` WHERE `id` < 517526 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000628s ]
  14. SELECT * FROM `article` WHERE `id` < 517526 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000613s ]
  15. SELECT * FROM `article` WHERE `id` < 517526 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000629s ]
0.084509s