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本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。共120分。第Ⅰ卷(选择题共55分)一、选择题:本题共20小题,每题2分,共40分。每小题只有一个选项符合题意。1.下列对于组成生物体的化学元素及化合物的认识,正确的是()A.组成生物体的化学元素的种类与无机自然界中的相差很大B.绿色植物出现黄化苗的原因都是由于土壤中缺乏 Mg 元素C.细胞膜表面的糖被,在细胞间进行信息交流中
This paper is divided into two parts: Volume I (multiple-choice questions) and Volume II (non-multiple-choice questions). A total of 120 points. Volume I (55 multiple choice questions) First, multiple-choice questions: This question contains a total of 20 questions, each question 2 points, a total of 40 points. There is only one option for each question. 1. The following understanding of the chemical elements and compounds that make up organisms is correct. () A. The types of chemical elements that make up organisms are very different from those in inorganic nature. B. The reasons for the emergence of yellow seedlings in green plants are both Due to the lack of Mg in the soil C. Membrane surface of the cell membrane, in the exchange of information between cells