精品解析:2025高考云南卷生物真题(原卷版)
生物试题一、选择题:本题共16小题,每小题3分,共48分。在每小题给出的四个选项中,只有一项是符合题目要求的。1.化学元素含量对生命活动十分重要。下列说法错误的是( )A.植物缺镁导致叶绿素合成减少B.哺乳动物缺钙会出现抽搐症状C.人体缺铁导致镰状细胞贫血症D.人体缺碘甲状腺激素合成减少2.生物兴趣小组从橘子果肉中分离得到完整的线粒体,操作流程如图。下列说法错误的是( )A.缓冲液可以用蒸馏水代替B.匀浆的目的是释放线粒体C.差速离心可以将不同大小的颗粒分开D.该线粒体可用于研究丙酮酸氧化分解3.细胞作为生命活动的基本单位,需要与环境进行物质交换。下列说法正确的是( )A.协助扩散转运物...
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