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> 下列几种生物中,具有细胞结构的是A.①②③B.①②④C.①③④D.②③④-七年级生物
下列几种生物中,具有细胞结构的是A.①②③B.①②④C.①③④D.②③④-七年级生物
题目简介
下列几种生物中,具有细胞结构的是A.①②③B.①②④C.①③④D.②③④-七年级生物
题目详情
下列几种生物中,具有细胞结构的是
A.①②③
B.①②④
C.①③④
D.②③④
题型:单选题
难度:偏易
来源:不详
答案
B
试题分析:除病毒外,生物体都是由细胞构成的,细胞是生物体结构和功能的基本单位,身体只是由一个细胞构成的生物,叫做单细胞生物,②酵母菌、①细菌、④衣藻属于单细胞生物,④病毒是由蛋白质外壳和内部的遗传物质组成,是没有细胞结构的生物,因此,选项B符合题意,故选B。
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题目简介
下列几种生物中,具有细胞结构的是A.①②③B.①②④C.①③④D.②③④-七年级生物
题目详情
答案
试题分析:除病毒外,生物体都是由细胞构成的,细胞是生物体结构和功能的基本单位,身体只是由一个细胞构成的生物,叫做单细胞生物,②酵母菌、①细菌、④衣藻属于单细胞生物,④病毒是由蛋白质外壳和内部的遗传物质组成,是没有细胞结构的生物,因此,选项B符合题意,故选B。