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Question 3 · Single choice · 中档
B淋巴细胞分化形成浆细胞和记忆B淋巴细胞,他们相同的是( )
A. 细胞形态相同 B. 蛋白质相同 C. 遗传物质相同 D. mRNA相同
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Question 4 · Single choice · 中档
1.“芳林新叶催陈叶,流水前波让后波”,新叶中叶绿素的合成必须含有的离子是( )
A. Mg2+ B. Fe2+ C. Zn2+ D. Ca2+
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Question 5 · Single choice · 中档
2.观察1000个酵母菌有丝分裂,根据表格分析时间最长的是( ) G1期 S期 440 303
A. G1期 B. G2期 C. S期 D. M期
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Question 6 · Single choice · 中档
3.B淋巴细胞分化形成浆细胞和记忆B淋巴细胞,他们相同的是( )
A. 细胞形态相同 B. 蛋白质相同 C. 遗传物质相同 D. mRNA相同
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Question 7 · Single choice · 中档
4.HIV通过cd4受体主要感染T淋巴细胞,主要阻断了人体的( )
A. 细胞免疫 B. 体液免疫 C. 非特异性免疫 D. 特异性免疫
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Question 8 · Single choice · 中档
5.根据表格检测的结果,被检测的物质含有的成分有( ) 双缩脲试剂 蓝色 苏丹Ⅲ染液 橘红色 班氏试剂 砖红色
A. 脂肪,还原性糖 B. 蛋白质、脂肪 C. 蛋白质、还原性糖 D. 蛋白质,淀粉
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Question 9 · Single choice · 中档
A. DE和de B. DdEe C. DDEE D. ddee
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Question 10 · Single choice · 中档
7.长期在夜间摄入过多营养物质, 更容易引起肥胖, 主要是因为这种生活习惯会导致 ( )
A. 胰高血糖素长期偏高 B. 胰岛素长期偏高 C. 胰高血糖素长期不变 D. 胰岛素长期不变
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Question 11 · Single choice · 中档
8.A(抗病)对a(不抗病) ,B(高杆)对b(矮杆) ,亲本为AAbb与aaBB,杂交后得到F1, 对F1、测交,子代中,矮杆抗病的个体的基因型为( )
A. AaBb B. Aabb C. AAbb D. aabb
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Question 12 · Single choice · 中档
9.图为人类卵细胞形成过程示意图,Ⅰ~Ⅴ表示卵细胞形成过程中不同的细胞名称,阿拉伯 数字代表染色体数,细胞内DNA含量与卵原细胞相同的是细胞( )
A. Ⅰ B. Ⅱ Ⅲ C. Ⅰ Ⅱ Ⅲ D. Ⅰ Ⅱ Ⅲ Ⅳ
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Question 13 · Single choice · 中档
10.炎热的夏天,人剧烈运动大汗淋漓,此时会导致人低血压的是( )
A. 血容量上升 B. 心输出量上升 C. 心率下降 D. 血管管壁舒张
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Question 14 · Single choice · 中档
11.盛有H2O2溶液的瓶盖忘记盖上,测定其是否变质,可以加入的物质是( ) ①生鸡肝 ②生土豆片 ③熟鸡肝 ④炸薯条
A. ①② B. ①②③ C. ①②④ D. ②③④
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Question 15 · Single choice · 中档
12.向冷却的糯米饭上倒酵母菌的酒曲,盖上盖子并戳几个小孔,放置5天后产生大量水, 10天后产生酒精,期间的过程是( )
A. 有氧 B. 无氧 C. 先有氧后无氧 D. 先无氧后有氧
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Question 16 · Single choice · 中档
13.对除去顶芽的植物侧芽施加浓度为a生长素, 生长出果实的时间为10天, 当保留顶芽时, 再施加浓度为a的生长素,侧芽生长出果实的时间为( ) ①6天 ②8天 ③12天 ④14天
A. ①② B. ③④ C. ①③ D. ②④
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Question 17 · Single choice · 中档
A. CM B. VLDL C. LDL D. HDL
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Question 19 · Single choice · 中档
16.2017年11月,中国科学家首创的猴无性繁殖程序如图,并培育出“中中”。据图回答培 育“中中”所涉及的生物技术是( )
A. 转基因技术 B. 细胞融合技术 C. 干细胞技术 D. 细胞核移植技术
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Question 20 · Single choice · 中档
17.1927年,200多只东方铃蟾被科研人从北京市移入山东地区,经过百余年的进化,相比 北京市的蟾蜍( )
A. 基因库相同 B. 都没发生基因突变 C. 具有地理隔离 D. 基因都定向改变
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Question 21 · Single choice · 中档
18.新冠病毒刚刚爆发时检测病患并及时隔离的措施属于( )
A. 注射疫苗 B. 控制传染源 C. 切断传播途径 D. 保护易感人群
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Question 22 · Single choice · 中档
19.下列四幅图中,最能与抗原X发生反应的抗体是( )
A. 抗体X B. 抗体Y C. 抗体Z D. 抗体W
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Question 23 · Single choice · 中档
20.S1、S2、S3是烟草花上的复等位基因,已知同种配子传粉子代不育,则“?”的基因型 为( ) S1S3 S2S3
S1S3 S1S3 S1S2、S1S3、S2S3 S1S2 ? S1S2、S1S3、S2S3
A. S1S2、S2S3、S1S3 B. S1S1、S2S3、S1S3 C. S2S3、 S1S3、 S3S3 D. S1S2、S1S3
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Question 24 · 中档
21.实验使用的餐具、筷子及取样工具需经过 处理,接种方法是 。
Answer key 高压(蒸汽)灭菌,稀释涂布平板法
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Question 27 · Multiple choice · 中档
A. 口腔 B. 菜肴 C. 筷子 D. 空气
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Question 28 · Single choice · 中档
A. 抑制微生物繁殖 B. 抑制微生物的传播 C. 减少微生物的生长 D. 促进微生物繁殖
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