2021-2022学年生物人教版七年级上册小题狂练：2.1.1 练习使用显微镜
※题型：单选题※知识点：单选题※试题难度：中等<br>显微镜要摆放在实验桌略偏左的位置,目的是( )<br>A.左边光线好些<br>B.右边使用不方便<br>C.方便用左手调节显微镜<br>D.用左眼观察,右眼看着绘图<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/2d733529c33847d99c3c65ea9508a43a/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/07bb74a186f14ffb9ecdf0b4047f971b/76B8DFC27A51F256056ABF653D97ECED.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>当显微镜的镜筒缓缓下降时,眼睛应注视的部位是( )<br>A.物镜 B.目镜 C.反光镜 D.遮光器<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/5c30d18b18074877959dd283e8196200/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>光学显微镜的遮光器上有大小不同的光圈,其作用是( )<br>A.调节焦距 B.调节光线角度<br>C.调节光线多少 D.调节物像清晰度<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/75b639f3e3be4de48b9a3a696c06c92f/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/56ccaf2855904d1eb5dec343ad2eb847/854DCE53C3E94009AB161D2106F03F5F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>显微镜中,可以较大范围升降镜筒的结构是( )<br>A.粗准焦螺旋 B.转换器 C.细准焦螺旋 D.反光镜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8a7b57c04d5647a185de7ccc40244a54/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/44c34f2d094541cd8daad2ecffc675af/160EB41FE480470BD2E87933D0410310.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>在显微镜视野中发现了一个污点,下面操作中不能用于判断污点来源的是( )<br>A.转动反光镜 B.移动玻片标本<br>C.转动目镜 D.转动转换器<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/a36629a755ea4f859dcfe03ce3149447/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/4b304d4f68df422eb3658194f90230c7/1F78543BF8CD74A8A61B46A9572F59BC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>微雕是一种以微小精细见长的雕刻技法,其作品要用放大镜或显微镜方能看到镂刻的内容,现在有一台显微镜,它有5×、10×两个目镜,有10×、45×两个物镜,这台显微镜观察微雕的最小放大倍数和最大放大倍数分别是( )<br>A.50、225 B.100、450 C.50、450 D.150、675<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/638515fc646e4d5391f824890d56721f/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/d5110da7f94640e89566b679c48d48ca/A80B82E62FAE4ABEAE52F2CDB359B1A3.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>用显微镜的一个目镜分别与4个不同倍数的物镜组合观察临时装片,形成清晰物像时,每一物镜与载玻片的距离如下图所示。用哪一物镜在一个视野中看到的细胞数目最多?( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/12/52F48875BAA85C1D8D74896A28861007.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/12/0D820CF8C8AAF5B4E97B90519A0D944B.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/12/E0C0482C477E1F99F7528E6A29201FAA.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/12/E1D595A29F2824D2A239509DAABC81DB.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/e8705f2383614fcbacdfe4f9f8230451/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/6317dd898b3f46b68489084f852e3002/9F35D28DE86CEC82DC3254FE7E7DBBDE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>小华同学用显微镜观察字母“b”,他在显微镜的视野中看到是( )<br>A.p B.d C.b D.q<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2012/2d0f0e8fef2b4975acb169ccdf1108a3/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2012/3fb6d100eb9a46f781e924f8d71f422b/0B6868798E588DE440CC7FE5378B8066.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图是某同学用10倍物镜观察到的影像。如果想看到完整的字母影像。正确的做法是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/6/24/3EE19AF9701910A0C3531AA505598C30.png"><br>A.用20倍物镜 B.向下移动标本<br>C.标本向左移动 D.用5倍物镜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/f8e793e680074ca795599288d5b843cc/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/b5ddf88d574841e8b93f2866a701be85/8CA02A9D45D0B92B3EE2485D11F85E86.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>实验操作考试中,小刘抽到的题目是《练习使用显微镜》,使用过程中出现的疑问及处理办法不正确的是( )<br>A.物像太小——换高倍目镜或高倍物镜<br>B.物像偏左——向右移动玻片标本<br>C.视野较暗——用凹面镜和大光圈<br>D.物像不清晰——调节细准焦螺旋<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/06500c52e504442a90b0e6f60ca6bfdb/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/a896f5ee2a7f4fbaa02f222c88487ce1/69E114468224E564528728B908F191D1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>显微镜的使用过程中,下列做法正确的是( )<br>A.为了增加视野亮度,把凹面反光镜换成平面反光镜<br>B.为了观察到更多的细胞,把40×物镜换成10×物镜<br>C.转动转换器,调换不同放大倍数的目镜<br>D.用餐巾纸轻轻擦拭,清除物镜上的脏物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/7aaea100e7174e48aa3c31facb41441d/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/b41f1e0d026641338a42336f1bdd8ecf/B18452C003BCF5B8517236815BD6881A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于使用显微镜的叙述中,正确的是( )<br>A.对光时应选用高倍物镜<br>B.降低视野亮度应用反光镜的凹面<br>C.当玻片标本向右方移动时,物像向左方移动<br>D.10×目镜和40×物镜组合,则物像被放大50倍<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/de68c6b0bbdb4bf19b3884ee0614bd48/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/74d60bcc4c6f4df3b23864121ee294ad/21C6317C9B0685CC0F7E26D146CFF7F4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在使用光学显微镜时,正确的是( )<br>A.观察的材料应薄而透明<br>B.对光时应先将高倍物镜正对通光孔<br>C.调节准焦螺旋可使视野变亮<br>D.用凹面镜对光可使视野变暗<br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/7421B8C1B8365E6C26BC212972AD2D33.png"><br><br>
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