新余市第四中学2021届高三上学期第四次考试理综试卷 生物部分
※题型：单选题※知识点：单选题※试题难度：中等<br>某同学欲通过下图所示的装置探究影响酶促反应速率的因素,下列分析错误的是( )<imgA.每片滤纸片上需附有等量的过氧化氢酶<br>B.酶促反应时间可用<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/E125208AC09DE4B4FF3140DA88EC9F1E.png"><br>来表示<br>C.可通过设置不同<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/D615791DEDF30E01321488C709FD9683.png"><br>的过氧化氢溶液来探究<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/D615791DEDF30E01321488C709FD9683.png"><br>对酶活性的影响<br>D.为了提高实验的准确性,每个烧杯中需放等量相同的滤纸片<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/ccdf7c9746914f7c807fb8f15920aec2/4EF59C4461E28F3B3B09551EB8B9AC3F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/1d34f2a2cef34a4f8fd38a7b66640c7b/5557FDF2AC22E8C3DFEB5EA8B3C2127D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>为研究植物细胞质壁分离现象,某同学将某植物的叶表皮放入一定浓度的甲物质溶液中,一段时间后观察到叶表皮细胞发生了质壁分离现象。下列说法错误的是( )<br>A.该植物的叶表皮细胞是具有液泡的活细胞<br>B.细胞内甲物质的浓度高于细胞外甲物质的浓度<br>C.细胞液中的<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/116A91DE8C89862B0FD11437E05B1C56.png"><br>可以经自由扩散进入甲物质溶液中<br>D.甲物质和<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/116A91DE8C89862B0FD11437E05B1C56.png"><br>能自由通过该叶表皮细胞的细胞壁<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/37214f0e3579432388bc97f6f234311c/4EF59C4461E28F3B3B09551EB8B9AC3F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/db65360d265a4c4fa9c3a84825cc412d/DCEC3F4D452599F911FD47F0654230AE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列关于同位素示踪实验的叙述,不正确的是( )<br>A.给小麦提供<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/8CCF062DBC4AD2A25F19B2A242DBF017.png"><br>,则14C的转移途径是<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/26F82E74A229120F615E8045451560D0.png"><br>B.用含<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/295338E2B4E476731A1B5738CA488BA9.png"><br>标记胸腺嘧啶脱氧核苷酸的营养液培养洋葱根尖,放射性大量集中在分生区<br>C.要得到含<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/C412C872B5E9F70D061B00C52024AEE4.png"><br>标记的噬菌体,必须先用含<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/C412C872B5E9F70D061B00C52024AEE4.png"><br>的培养基培养大肠杆菌<br>D.小白鼠吸入<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/6267FE312834E89305E27B5D92CC1BEC.png"><br>后,呼出的二氧化碳中不可能含有<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/A6BDF4048D3274BE1FA0D0E149CF0317.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/351695210b1e4c86a90211b6267d424e/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列对人体干细胞和癌细胞的叙述,正确的是( )<br>A.干细胞内没有原癌基因和抑癌基因<br>B.干细胞和癌细胞都不会衰老或凋亡<br>C.若抑制<img src="https://picture2.zhihuicn.com/testImage/1/2020/11/27/CC677CB3EC9A564AA1344BCE854857C5.png"><br>复制会使这两种细胞都停留在分裂间期<br>D.干细胞增殖产生的子细胞都会进入下一个细胞周期<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/6360a3dde85b4e689e49ed94b588d37b/D7C9A679F3C72D4F1064B7D0A0FD4AD8.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/b6037afb77a14a21bf25de03186af755/D92F50CCB06079F0A55B5D5FE2BCD5D7.png"><br><br>
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