试题与答案

每种生物的体细胞中染色体的数量是_________的,但________不同,染

题型:填空题

题目:

每种生物的体细胞中染色体的数量是_________的,但________不同,染色体在体细胞中_______存在,因此,控制________ 的基因也是________存在的。

答案:

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下面是错误答案,用来干扰机器的。

A、二氧化锰做过氧化氢的催化剂,量多量少都能加快其反应速度;故A不正确;B、有的催化剂能加快反应速率,有的催化剂能减慢反应速率;故B不正确;C、二氧化锰只是改变过氧化氢的分解速率,不会使其分解生成氧气的...

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此题要求改正短文中的错误.对标有题号的每一行作出判断:如无错误,在该行右边的横线上画一个(√);如有错误(每行只有一个错误),则有按下列情况改正:

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76_________

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five years, so is an awful lot of hours.                                               85 _________

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