江苏省2024届高三年级第一学期期初学情调研迎考卷-生物答案
20232024学年高三上学期期初迎考卷生物参考答案及评分标准一、单项选择题:本部分包括14题,每题2分,共计28分。每题只有一个选项最符合题意。1.C 解析:糖类中的几丁质元素组成为C、H、O、N;磷脂一定含有C、H、O、P,不一定含有N。2.A3.C 解析:对酶进行改造,一般在基因水平上进行。4.A 解析:基于核型相关知识可知,图1是有丝分裂中期的俯视图。5.C 解析:果酒发酵时,装置内压强总是大于外界的,需缓慢放气,防止发酵液喷出,A错误;发酵过程中有机物种类增加,有机物含量因为代谢消耗而减少,B错误。6.A 解析:加热可以加快反应的速度,可在较短时间内观察到现象,但是要注意控制好时间,...
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