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一、选择题（每小题1分,共40分） 1. 蝶类在白天活动,蛾类在夜晚活动,这是生物体的 A. 应激性 B.遗传性 C.多样性 D.变异性 2.下列物质中,属于蛋白质的是 A.维生素 B.纤维素 C.胆固醇 D.淀粉酶 3. 植物根毛区的表皮细胞的吸水主要靠 A.吸胀作用 B.渗透作用 C.协助扩散 D.主动运输
I. Multiple-choice questions (1 point for each question, a total of 40 points) 1. The butterfly is active during the day and the moths are active at night. This is the organism’s A. Stress B. Hereditary C. Diversity D. Variation Sex 2. The following substances belong to the protein: A. Vitamin B. Cellulose C. Cholesterol D. Amylase 3. Water absorption of the epidermal cells in the plant root hair zone depends mainly on A. Absorption B. Infiltration C. Assisted diffusion D. Active transport