3.5元素与生物大分子—2021-2022学年高一生物北师大版（2019）必修1随堂检测
※题型：单选题※知识点：单选题※试题难度：中等<br>下列哪一实例能证明微量元素是生命活所必需( )<br>A.Mg是叶绿素的组成成分<br>B.油菜缺少B时只开花不结果<br>C.哺乳动物血液中钙离子含量太低会引起抽搐<br>D.缺P会影响DNA的合成<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/884f6d8471b04bf5a6040f15991d5e86/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2021/4d33f93ee1ee4ceebbc3048e83693327/E0DB4B8FAC760D9FB94AAB7C8E138D29.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>生物细胞中含量最多的两种物质所共有的元素是( )<br>A.C、H、O、N B.C、H、O C.H、O D.N、P<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2012/551d2526dbdb49c4bb6f2356b3a23926/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2012/acb8a9287a784e99a561bf1aa714a0fe/D350D020784DECDEF3361AFC5D28C494.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>组成生物大分子支架的元素是( )<br>A.氧 B.氢 C.碳 D.氮<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/e2c670ee0d3a45edaba1940655c87fe8/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2021/96a90195bb82486f922eaf9d88c6b66e/9F24DC1B5080AA53CCD7FEF15B61730A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>构成细胞的化合物中,占细胞鲜重最多的是( )<br>A.水 B.糖类 C.蛋白质 D.核酸<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2019/c4ea739415d54adb88ebfcc891f9f5d3/C6DD893B0461FAD877175A7ECBBD5939.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>人们把碳比喻成“生命的核心元素”,其理由是( )<br>A.碳在细胞中含量较多<br>B.CO<sub>2</sub>容易进入细胞<br>C.生物大分子以碳链为基本骨架<br>D.构成生命体的有机物和无机物均含有碳<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/281aef278eef4945b130b134f2eee6bd/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/dbccedbc56e54e3ca8e71359d59d3ee0/BBE0BEBFAE2097039949E9DC7544D341.png"><br><br>
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